Powertrain
197 topics in this forum
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Should the Corvette abandon the V8 for an I6? Or, maybe, its Camaro little brother should? Although the Corvette is most identified with a V8 -- more specifically various iterations of the small block V8 -- it started life with an I6. Now that first Corvette wasn't very good, but fundamentally an Inline-6 is a smoother and more refined engine configuration than a V8. The I6 and H engines are the only ones with zero 1st and 2nd order vibrations. It also allows contemporary technology such as VVT phasers to be incorporated with half as many actuators as a V-layout because it has half as many camshafts. The I6 is also fundamentally stronger than a V8 because it has seven ma…
Last reply by CaddyXLR-V, -
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How will you spec a small car engine -- such as one for the Astra or the Cobalt? If it is up to me it'll be as follows:- Displacement: 1800 cc Bore x Stroke: 88 x 74 mm Construction: Aluminum block and heads. Harmonic compensation: Twin Lanchester type balancers driven by timing chain. Compression ratio: 10.8:1 (12.8:1) Aspiration: Normally aspirated with 4 port mounted intake butterflies and trumpeted velocity stacks. Valvetrain: Chain driven DOHC 4-valve per cylinder with continuous intake/exhaust VVT Fuel injection: Direct gasoline injection with 50~150 psi variable pressure rail Maximum engine speed: 7500 rpm (8,500 rpm) Maximum piston speed: 3642 …
Last reply by dwightlooi, -
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The HHR SS is a big deal. Not that I care for the 50s wagon looks or the vehicle interests me in anyway. (1) It is a big deal because this is the first transverse engine, FWD, application of the 2.0 liter DI-VVT Turbo engine (LNF). (2) It also confirms that GM is not toning down or castrating the LNF to a lower power level for sideways, FWD, applications. Transverse LNFs will still be 260hp. (3) The Chevy Cobalt SS Supercharged has been retired from the lineup. Before the HHR SS came along there are all kinds of doubt as to whether an effort will be made to repackage the LNF for FWD applications and hence whether the Cobalt as a chance of getting the turbo engine. N…
Last reply by dwightlooi, -
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Low NVH for New Duramax 4500 GM's new light-duty diesel to be quiet, clean By RICHARD TRUETT | Link to Original Article @ Autoweek | Published 07/16/07, 11:16 am et DETROIT -- The 4.5-liter turbocharged diesel engine that General Motors plans to introduce in 2010 in light-duty pickups will have breakthrough technology in emissions and noise reduction, says the engine's assistant chief engineer, Jim Minneker. The new diesel is being designed to meet the most stringent federal and California emissions standards and will be available in all 50 states, Minneker said. It will use a urea injection system to control oxides of nitrogen, or NOx. But GM won't be part of the…
Last reply by ZL-1, -
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diesel info Low NVH for New Duramax 4500GM's new light-duty diesel to be quiet, clean By RICHARD TRUETT | AUTOMOTIVE NEWS AutoWeek | Updated: 07/16/07, 11:16 am et DETROIT -- The 4.5-liter turbocharged diesel engine that General Motors plans to introduce in 2010 in light-duty pickups will have breakthrough technology in emissions and noise reduction, says the engine's assistant chief engineer, Jim Minneker. The new diesel is being designed to meet the most stringent federal and California emissions standards and will be available in all 50 states, Minneker said. It will use a urea injection system to control oxides of nitrogen, or NOx. But GM won't be part of th…
Last reply by thegriffon, -
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General Motors to buy stake in diesel engine manufacturer Buys 50% of VM Motori from Penske Corp July 16, 2007 | BY KATIE MERX | Link to Original Article @ Detroit Free Press General Motors Corp. announced on Monday that it has agreed to buy a 50% stake in Italian diesel engine manufacturer VM Motori S.p.A. from Penske Corp. in a deal expected to expand GM’s diesel expertise in global markets. “Diesel engines have a very important role in GM’s global advanced propulsion strategy,” Tom Stephens, group vice president of GM Global Powertrain and Quality, said in a statement. “We are leveraging expertise and resources within our company and through technology partners to …
Last reply by thegriffon, -
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I thought you guys might be interested in the engine that one of the tuners I know on an Australian forum has built for his street/strip car. The engine isn't run in yet, so the revs have been limited to 4500 and the boost is currently capped at 10 psi, but even with those restrictions it's producing 455 rwhp at 4500rpm running through a T56 6 speed. Once its run in, he'll be winding up the boost and the revs. He's aiming for 700 rwhp on pump fuel and 10 second 1/4 mile times. He runs this place: http://www.castlehillexhaust.com.au/ and there's lots of other interesting stuff in the picture gallery.
Last reply by 76ChevyTrucker, -
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GM inaugurates new engine plant in southern China Associated Press | Link to Original Article @ DetNews SHANGHAI, China -- General Motors Corp. inaugurated a new engine plant at its minicar factory SAIC-GM-Wuling Automobile Co. in southern China on Monday. The 2 billion yuan ($263 million) new engine plant, adjacent to the factory in Liuzhou, will have a capacity of 300,000 units a year and begin production of 1.1-liter and 1.2-liter engines in August, GM said in a statement. The new engine plant will facilitate new product development at the minicar factory, which now buys engines and related parts from outside suppliers, the company said. The engines will be used …
Last reply by thegriffon, -
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GM Developing Small Engine in Korea, China New motor partners with Daewoo, Suzuki By ALYSHA WEBB | Link to Original Article @ AutoWeek | Published 06/26/07, 12:03 pm et SHANGHAI -- General Motors is developing an engine in Korea and China that may be used globally to replace GM's 1.6-liter engine, say supplier and other sources. The engine is being developed jointly at GM Daewoo Auto & Technology, which is a GM subsidiary in Korea; and the Pan Asia Technical Automotive Center Co. in Shanghai. It will be available in 1.4- and 1.6-liter versions. GM Daewoo said it will not comment on future programs. The new engine would be useful in the United States, where GM …
Last reply by dwightlooi, -
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I am being given a 1969 GMC pickup truck and I don't know much about the old GM trucks. All I know is it has an inline 6 engine, auto tranny, and 2-wheel drive.
Last reply by balthazar, -
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GM To Invest $100 Million In New York Plant For Diesel Engine Production TONAWANDA , N.Y. – General Motors Corp. will invest $100 million in its Tonawanda engine plant to produce an all-new, 4.5-liter V-8 Duramax high-output diesel engine for the Chevrolet Silverado and GMC Sierra light-duty pickup trucks and the HUMMER H2. The engine fuel efficiency improves by 25 percent when compared with gasoline engines. Environmental benefits of the new engine include a 13-percent reduction in CO2 versus gasoline engines, and at least a 90-percent reduction in particulates and NOx when compared to diesel vehicles today. The investment includes a 200,000-square-foot facility ren…
Last reply by A Horse With No Name, -
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Since the Eco has been out for a while now ( Saturns, Cavaliers)...I was curious-do you feel it is a good engine ? (overall) I would have to say yes, at least for me. NO issues at all with mine, though it only has 35k on it now... Guy I work with has 120k on his 03 Cavalier w/ the eco. No issues at all-still runs well-burns a tiny bit of oil. Not bad for a beat on car. Neighbor is a sales rep. Has almost 90k on his Cobalt. Speedo just stopped working, but his engine is holding up well too... So far so good...
Last reply by daves87rs, -
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GM May Sell Allison Transmission General Motors Corp. said Thursday that it may sell its Allison Transmission division as part of its effort to raise money and focus on its core business. GM said in a news release that "it is looking at strategic options" for the Indianapolis-based transmission unit "including a potential sale of the business." The world's leading automaker lost $3.05 billion in the first three quarters of 2006. Allison Transmission has 3,400 employees and seven plants in Indianapolis. It makes and sells automatic transmissions for commercial and military vehicles. "This process is another potential step in GM's plan to improve liquidity through th…
Last reply by Camino LS6, -
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I thought you guys might like to see this. A dyno specialist I know from an Australian performance forum posted this. It's the LS1 in one of his co worker's cars. His co worker is not happy at the moment.
Last reply by Jamie, -
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GM Celebrates One-Millionth Duramax Diesel DAYTON, Ohio – General Motors Corp. (GM) announced today the production of its one-millionth Duramax V-8 turbo-diesel engine at the DMAX plant in Moraine. DMAX Ltd., a joint venture between GM and Isuzu Motors Limited, was established as a diesel engine company in 1998. GM first introduced the Duramax diesel in the U.S. in the 2001 model year and since then, customer enthusiasm for this heavy duty diesel has been outstanding. In fact, GM’s heavy duty diesel pickup market share has jumped nearly tenfold in the six years that Duramax engines have been offered. “Our Duramax diesel is one of the best in the industry,” said John…
Last reply by 76ChevyTrucker, -
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Okay I need help.I just picked up my Chebey 900 crew yesterday.Traded my Honda Ridgeline because of driveline issues and poor milage.Being a GM retiree I felt criminal in the Honda.So far the 900 is more than I thought.I've got the flex fuel 5.3 with the 342 for milage with 20" Texas Edition wheels. Now being a farm hick I know to pull I need a .410 or at least a .373 rear end.I am going to pull occasionaly a 3000# cargo trailer but usually I'll use the truck as a car.What I'm looking for here are some words of confidence that the truck will give me good milage and pull my trailer when I need to.This looks like a great forum and I feel like I'm home again.
Last reply by 76ChevyTrucker, -
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With gas prices rising as high, if not higher than they were last summer and with VW's Jetta bluetec 2.0TDI rumored to get 40/60 mpg, I'm wondering if GM is missing an opportunity. I know that diesels cost more - and GM is skeptical that people would be willing to pay that premium, but consider this: If you drive 15,000 miles/year and your 4cyl car averages 30mpg, you'll consume 500 gallons of gas. Prices in my neighborhood for gasoline just jumped to $3.39 today.. so that's $1695/year. If you get 60mpg in your TDI, you'll consume 250 gallons of diesel. Current prices for diesel here are $2.79/gallon, which gets you to $697.50/year. You are a 2 diet coke's away fr…
Last reply by dwightlooi, -
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of course it's a tad jumping ahead...(ls3 reveal saturday?) what will the ls3 have improved over the ls2 (other than displacement and power)? will this mean anything quickly ( by 09my) for the high value v6's? those v6's seem like a good thing for the Vue XE, the aura, g6 and the impala, for being a mid level engine. with the 08 malibu losing it's 3.5L (as of right now), will this engine continue in the "NG" Aura/G6? the impala is questionable with the zeta replacement being .."reevaluated" the 3.9L has pretty much been designated an impala (excluding the uplander) only engine, but when the 3.5L recently got the tad HP boost, why not the 3.9L? i know the 3.9…
Last reply by 91z4me, -
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what is the best way to rebuild a 305 with more horse power the motor now has 170000 miles on it and when i hit the gas the oil pressure drops instead of getting higher and i want more horsepower
Last reply by capriceman, -
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The SAE techbriefs is a can't miss favorite of mine to read. The April 2007 edition shows you why: http://www.sae.org/automag/techbriefs/04-2007/1-115-4-22.pdf After you read the interesting article on GM's 2.9l V6 diesel PCCI (pre-mixed charge compresion ignition) technology, scroll on down to the end of the article & read about the Viper's V10 with cam-in-cam variable valve timing. Note the quote in the tail paragraph:
Last reply by cmattson, -
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Now that the '08 Malibu ditched the LZ4, there aren't many cars left with it. G6, Aura, Impala, that's pretty much it. And by the sound of things, the next iteration of these cars will use the 3.6L as well. So the family is dead, basically? EDIT: Changed the title to reduce flames.
Last reply by dwightlooi, -
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What are the main differences between the three? Also, if you were to buy a LS1 car, would it be easy to turn it into an LS2 or LS6? TIA, guys!
Last reply by schuby87, -
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Hey guys, I'm looking for some information on the following engines not included in the C&G Resource Guide (found at the forum header). The information that I am looking for is as follows: Engine Name (i.e. Ecotec 2.2L I4) Displacement (cc / ci) Configuration (i.e. DOHC 4 valves/cylinder) HP @ RPM lb-ft @ RPM Applications (models each engine is found in) Engine Code (i.e. LS2 or LK5). Here is the list of engines I'm looking for (along with any others you may find that aren't on the C&G Resource Guide: 2.0L Turbo Ecotec I4 (9-3, Solstice/Sky) 2.3L Turbo I4 (Saab 9-5) 2.9L I4 (Colorado and Canyon) 3.6L DI V6 (Aura XR and ’08 CTS) 2.4L Hybrid I4 (Aura/Vue Green Li…
Last reply by thegriffon, -
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Direct Injection Connection Flint Engine South building GM's next generation engine THE FLINT JOURNAL FIRST EDITION Thursday, February 01, 2007 | By Todd Seibt FLINT - Imagine an internal combustion engine that cuts nasty tailpipe emissions, leans itself out in cruise mode - and can still kick gas when it's time to pass. Too good to be true? Actually, it's being built near you. Workers at General Motors Flint Engine South have already assembled a few pre-production versions of the next generation of GM's spark ignition direct injection 3.6-liter V-6 engines. They expect to start full production in April, for installation in the all-new 2008 Cadillac CTS, and…
Last reply by dwightlooi, -
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AS you all probably know the 08 vette has the new 6.2 450 hp LS3 v8 standard replacing the 6.0 400 hp LS2. Anybody know anything about the LS3 besides the 450 hp figure? Tourque, redline, power band etc? Does it have DOD or VVT or both? What cars do you think it will end up in as all of the recent LS2 cars are dead. No more SSR, GTO, or CTS V. The future CTS-V is supposed to get at least 500 hp so this engine won't end up there. Will this be exclusivley a Vette engine? What do you guys think...
Last reply by dwightlooi, -
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I was looking for info about the G6's manual transmission, and I couldn't find FGP anywhere. I found one reference that FGP is Fiat-GM Powertrain. Is this true? If it is, could this be why the G6 is losing the manual transmission, since this is to be gone by December 2007?
Last reply by thegriffon, -
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GM@NAIAS GM E-Flex Press Release Chevrolet Volt Image Gallery Chevrolet Volt Press Release GM’s E-FLEX System moves the automobile toward a new electric age DETROIT – General Motors Corp. will introduce multiple propulsion systems that fit into a common chassis, using electric drive to help the world diversify energy sources and establish electricity from the grid as one of those sources. GM refers to this family of propulsion systems as the “E-flex System.” “The DNA of the automobile has not changed in more than 100 years,” said Larry Burns, GM vice president of research and development and strategic planning. “Vehicles still operate in pretty much the same fash…
Last reply by dwightlooi, -
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Buffalo, NY – General Motors today announced it will invest $300 million in its GM Powertrain Tonawanda engine plant to manufacture an all-new, technically advanced dual overhead cam (DOHC) V-8 engine, slated to begin production here in 2009. “This all-new engine will play a critical role in GM’s exciting future luxury vehicle portfolio,” said John Buttermore, GM Powertrain vice president of global manufacturing. “As one of the most technically advanced engines in GM, its power and smoothness will be among the world’s best, and yet more fuel efficient and environmentally friendly.” The investment includes renovation to part of the plant, new machinery and tooling to s…
Last reply by SouthHavenSal, -
It looks like GM has finally found a solution to powertrain diversity, I saw this transmission at NAIAS and was surprized to see how small it was. Main reason is the is no drive shaft assembly, now this transmission can easily be mated to a FWD or AWD without any problems. I have pics and will post them soon.
Last reply by dwightlooi, -
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So when do you think the next northstar will come out and what do you think it will be rated at? The HO 3.6 got a 25 hp boost from new heads and some better breathing. its said to get up to a 15 percent power increase from DI. that 25 hp from the new head is about a 10 percent increase and with a 15 percent Di bump the 275 hp 3.6 would put out an impressive 316hp. So a better breathing northstar with a 10 percent boost would be 352 hp and that increased by 15 percent by DI would be 405 hp. Thats pretty high and I would love to see that out of an NA northstar in the "new" STS but I dont think thats going to happen or be quite that high when it does come out. What…
Last reply by 76ChevyTrucker, -
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I found this in the Powertrain guides... ------------------------------- Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 275 HP @ 5600 RPM 290 lb-ft @ 4400 RPM Buick Lucerne LD8 Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 275 HP @ 5200 RPM 292 lb-ft @ 4400 RPM Cadillac DTS LD8 Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 291 HP @ 6000 RPM 286 lb-ft @ 4400 RPM Cadillac DTS L37 Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 320 HP @ 6400 RPM 315 lb-ft @ 4400 RPM Cadillac SRX, Cadillac STS LH2 Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 320 HP @ 6400 RPM 310 lb-ft @ 4400 RPM Cadillac XLR LH2 -------------------------…
Last reply by Paolino, -
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I have a '99 Silverado Z71 with the Vortec 5300 - awesome engine. I have never had any problems with my truck and has served me faithfully from the day I bought it at roughly 144,000 miles until today 168,000. I have put a flowmaster exhaust system on there and have swapped the stock airfilter for a K&N filter. This past summer I bought a Hypertech Power II Programmer for my truck with dual fuel technology. I programmed my truck to run best on 87 octane, for the transmission to have harder shifts to extend trans life, and I reset the governor to 128 mph (my tires' max speed rating). Ever since I reprogrammed my truck there has been a slight rattle behind the driv…
Last reply by VMIZ71, -
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any known plans to put these trannies in passenger vehicles? ... we know they're going into the gmt900s and probably the NG vue... is this going to be an option for larger engines over the BAS system?
Last reply by thegriffon, -
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Yeah, couldn't think of the code for the NA version (the SC is the L67). Anyway, what are the differences between the two? I know the L67 is supercharged and only fits in GPs, but are there any forged internals? In other words, could you pretty much take a regular NA 3.8 Series II Grand Prix and throw on an M90 supercharger (andthe spark plugs and all that) and have an L67 right there? Or is there more to it? Just curious. Thanks in advance.
Last reply by BB_454, -
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i'm guessing the next gen N* will have it, but will the 3.6 be getting afm anytime soon?
Last reply by thegriffon, -
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Popular mechanics just came in today, says that "GM will show an HCCI next year" thoughts?
Last reply by Ghost Dog, -
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anyone have insider information on what the next revised engine announce ment will be? the last 2 have been the 3.6L V6 getting DI and before that was the.... 3.9L AFM or the 2.0L turbo DI. right? will the next be an ecotec update? an LSx engine, or something else?
Last reply by dado, -
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We all know all or almost all the GMT900s will get the new 6-speed autos. Everyone says 2008, they need to build up inventory. Do we know for a fact this is the plan. Is is safe to say that all or almost all GMT900s will get them in 2008 or will it be select like it was for 2007, maybe limited to LTs or SLTs, or to the 5.3 but not the 4.8? The GMT355s are another story. They need them too, but I won't go into that. I think this is the only thing "lacking" with the GM trucks. It's public perception not to mention help mileage a little and improve their quickness. If anyone has some insight of what the plan is, it would be greatly appreciated.
Last reply by razoredge, -
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GM developing home hydrogen refueling device 24-September-2006 Source:Chris Woodyard-USA Today General Motors is building a prototype for a home hydrogen refueling unit in hopes of selling fuel-cell cars by 2011. The unit, which would make hydrogen using either electricity or sunlight, would help sidestep one of the most vexing problems surrounding the creation of the pollution-free, alternative-power cars: how to persuade oil companies to invest in expensive new hydrogen stations that would compete with their core product, gasoline. The automaker's goal is an affordable, compact unit that would allow customers to fill their cars overnight in their own garage…
Last reply by goblue1999, -
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L67 still has the stuff, just found this tonight, its actually a month old http://zzperformance.com/grand_prix/latest_news1.php?id=112 stock used block/lower end, stock differential & final drives, not too shaby !
Last reply by razoredge, -
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meida.gm says the 3.6L for lambda is gearing up. -------------- FOR RELEASE: 2006-09-22 Flint Engine South Begins Production Of Versatile 2007 GM 3.6L V-6 VVT Engine This Week FLINT , Mich. – Today, General Motors delivered on its 2004 promise to invest approximately $300 million in its Flint Engine South manufacturing plant, further strengthening a key GM manufacturing center and contributing to the state and local economy. GM Flint South began production of the 3.6L V-6 with variable valve timing (VVT), which is used in the 2007 Cadillac CTS, SRX and STS; Saturn Outlook; GMC Acadia and slated for the 2008 Buick Enclave. The 3.6L V-6 VVT is an all-aluminum, dua…
Last reply by ponchoman49, -
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Testing GM's `Sequel' Fuel-cell concept vehicle peppy, smooth, silent But fuel tanks, batteries make it unusually heavy Sep. 25, 2006. 01:00 AM LINDSAY BROOKE NEW YORK TIMES NEW YORK—If an afternoon behind the wheel of General Motors' latest prototype hydrogen fuel-cell vehicle, the Sequel, is any indication, powertrains of the future will not feel much different from the engines that drive today's cars and trucks. By a seat-of-the-pants evaluation, the Sequel feels reasonably peppy; acceleration is smooth and nearly silent. And it is capable of reaching 90 miles an hour, said Mohsen Shabana, chief engineer for the Sequel program and my passenger. More important…
Last reply by Flybrian, -
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Eight Speeds Not Just for Lexus Anymore? General Motors might not be the first company that comes to mind when thinking about high-tech gadgets and gizmos. But a new trademark filing suggests The General might be planning to go after technology-obsessed Lexus with an eight speed transmission of its own. On August 8th, GM registered the name "8 Speed" (pictured) in reference to automobile transmissions. To us, this can only mean one thing. Currently, Lexus is the only automaker with an eight speed transmission. Might GM's Cadillac and Buick brands be getting ready to fight back? Pictured right is the styled text intended for the trademark (low-resolution only). Read "Tra…
Last reply by 76ChevyTrucker, -
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http://freep.com/apps/pbcs.dll/article?AID...NEWS99/60824015 Just when we thought that GM was not coming to come strong!
Last reply by 91z4me, -
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A New Internet Stop for GM Performance Parts DETROIT – GM Performance Parts (GMPP) is unleashing a new power – and instead of delivering it in a crate, this power is delivered on the web at GMPP’s all-new website, www.gmperformanceparts.com. As the leader in providing high performance solutions to the automotive aftermarket, GMPP is extending its horsepower expertise to this newly launched website created by advertising agency, Leo Burnett Detroit. “Over the past several years we’ve introduced some exciting new products, like the 350/290 HP, the ZZ572 and the LS7,” said Lisa Reffett, marketing manager, GM Performance Parts. “It seems only fitting that our website sho…
Last reply by PurdueGuy, -
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How much does GM underestimate engine power? We all know GM is notoriously conservative when calculating engine power. This has been highlighted the last couple of years as GM has begun a comprehensive program of third-party certification, with nominal horsepower increases even as rival automakers cut power claims with the advent of the new SAE standard. The latest beneficiary is the new higher-output version of the fwd LY7 in the Acadia and Outlook crossovers. Compare the previously published figures with the latest, certified results. Ford and Toyota, read'em and weep. Power (hp / kW) 263 / 196 @ 6600 rpm w/ single exhaust (est.) 270 / 201 @ 6600 rpm w/ single exhaus…
Last reply by Aura XR, -
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For your reference, click here to see which General Motors engines are SAE-certified.
Last reply by Flybrian, -
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GM Sequel, Part II GM to build the Sequel, its hydrogen fuel-cell car, claiming it has increased its range to 300 miles and 0 to 60 mph in under 10 seconds Way back at the start of 2005, the world's largest automotive manufacturer, General Motors, showed the Sequel advanced hydrogen fuel-cell concept vehicle at the 2005 North American International Auto Show (NAIAS), billing it as the culmination of US$1 billion of intensive research it had conducted into fuel cell technology. Like most show cars, the Sequel was not a working model, but now General Motors Chairman and CEO Rick Wagoner has gone on record as saying "the most technologically advanced car GM has ever b…
Last reply by Sixty8panther, -
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GM powertrain plans: Variety - but no diesel yet Richard Truett | | Automotive News / August 21, 2006 - 6:00 am General Motors' powertrain division is rolling out a variety of fuel-saving, high-tech engines; hybrid powertrains; and six-speed automatic transmissions. Because of high costs, GM does not plan to add diesels to passenger cars and light trucks before at least 2010. Here's a look at GM's strategy: Hybrids: GM plans a dozen hybrids by the end of the decade. But only eight models have been named thus far. GM's hybrid plans are much like its engine strategy. Some hybrid powertrains will be high-value and some high-feature. GM's first real hybrid, the Sa…
Last reply by MyerShift, -
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the new specs show adjusted redlines... 6400 RPM for the 4 6000 RPM for the 9 and the power in the aura is also in the g6's 224 hp and 220 lbft from media.gm the bu has a 217hp & lbft rating the impala and MC didn't get this slightly more powerful engine.... think it's from quanity demand or would they have to get them recertified if they changed the engine?
Last reply by loki, -
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is there any engine other than the 3.9 with the active intake? is there any proof or good rumors it's going to make it into more engines? side question... would that not do much if anything to inline engines power band?
Last reply by razoredge, -
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Ok, we know that GM's had a substantial investment into their transmissions - with the 6speed fwd and 6speed rwd just hitting the markets. The Allison transmission simply cannot be beat. For engines: 6-speed pushrods: I know that the 3.5l (as used in the Impala) and the 3.9l have been getting active displacement & variable valve timing. 6-speed DOHC: The 3.6l variant of this engine is rumored to be getting direct injection - and should push around 300hp. I haven't heard anything about the 2.8l, 3.2l. This engine was designed so that you could have different bore sizes through the use of cyl. sleeves. It can displace anywhere from 2.8l to 4.0l. I'd imagin…
Last reply by Dsuupr, -
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So why do we have both a 240 & 227 HP spec for the 3900 ?
Last reply by trinacriabob, -
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Help please; This note in my Operator's Manual describes what my car is doing perfectly: "If your vehicle accelerates sluggishly from a stop, and/or the automatic tranxaxle does not seem to shift, a sensor that controls your electronic transaxle may not be working. Driving with these symptoms for an extended period may cause transaxle damage." My question is, How can I find and replace this sensor? Any help would be appreciated. I do not have a service manual for this car. Thanks, Dick
Last reply by shanahand, -
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will the larger atlas 4 and 5 cyliders mean a larger 6, more to about 4.4L? and would this make closer to the tune of 310hp and roughly 290ft-lbs? factoring DI in, would this make the base v-8 ( 4.8L ) not needed at all? other than the silverado and other gmt 900's, any other possibilities of this engine configuration? any insider have any info along these lines?
Last reply by 76ChevyTrucker, -
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Well, with the recent press release about the 3.6L HF V6 w/DI, discussion arose about what GM would do with the Northstar. If the same percentage gains are made on the Northstar as on the 3.6L HF V6, the Northstar would deliever approximately 370HP and 340 lb-ft without any other modifications. I'm sure with a few more tweaks it could be up to 380HP and 350 lb-ft. So, if a DI Northstar made 380/350, does everyone think this would be sufficient or should GM develop a new DOHC V8 for Cadillacs and Buicks?
Last reply by 76ChevyTrucker, -
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doesn't the aura have a ~224hp 3.5L base engine right? that's ~13 hp over the impala, so can they (re)tune the 3.9L for more like 250 easily if they wanted? or did gm just move the torque up the powerband to have a HO 3.5L for saturn?
Last reply by ToniCipriani, -
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GM's 3.9L V-6 Family Grows With E85-Capable And Fuel-Saving Active Fuel Management™ Versions Chicago, IL. - Today at the Midwest Automotive Media Association meeting Ed Peper, General Manager, Chevrolet, announced General Motor's first V-6 application of fuel-saving Active Fuel Management™ on the 3.9L V-6 offered in the 2007 Chevy Impala, and E85 ethanol fuel capability on the 3.9L V-6 offered in the '07 Chevy Uplander. "The application of Active Fuel Management™ (AFM) and E85 ethanol offers customers more choices when it comes to selecting efficient, fuel-conscious vehicles," said Peper. "E85 fuel reduces the need for petroleum and helps reduce greenhouse gas emissio…
Last reply by loki, -
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Larger-Displacement 2.9L and 3.7L Vortec Inline Engines Deliver More Power PONTIAC, Mich. - For the 2007 model year, GM's popular midsize trucks - Chevrolet Colorado and GMC Canyon - as well as the HUMMER H3 SUV, feature new, larger-displacement inline four- and five-cylinder engines. The new Vortec 2.9L I-4 and Vortec 3.7L I-5 deliver more horsepower and torque than the engines they replace, giving the vehicles increased performance. The Vortec 2.9L DOHC four-cylinder with variable valve timing (VVT) replaces the previous 2.8L four-cylinder and delivers 185 horsepower (138 kW) and 190 lb.-ft. of torque (258 Nm).* The Vortec 3.7L DOHC five-cylinder with VVT replaces t…
Last reply by Derek77, -
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We know right now the 2.0L Ecotec SIDI Turbo and the 3.6L are getting DI, do we also know at the moment which engines will be getting DI as well?
Last reply by ToniCipriani, -
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Could, in theory, the supercharger from the 2.0L S/C Ecotec (Cobalt SC/SS, Ion Redline, et. al.), or any of the aftermarket stage 2 or stage 3's meant ofr the S/C 2.0L fit on the N/A 2.2 or 2.4 Ecotecs with very little or no modification to the mount points or TB? I would assume that all the Ecotec engines are the same on the outside, and that a retrofit installation would be somewhat direct. Are there differences in the throttle bodies and mount points that would prevent this?
Last reply by loki, -
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How do you pronounce "Ecotec"? Is it E-Co-Tech (like, ecological technology) or Echo-tech (like, I dunno what the heck that would mean). I've always said it the first way, but I've heard people pronounce it the second way. Which (if either) is correct?
Last reply by Turbojett, -
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I havent posted much here but i thought some of u would enjoy this car as much as i did. http://home.earthlink.net/~bzdel/index1.htm http://www.ls1tech.com/forums/showthread.p...295#post4877295 <<---track runs
Last reply by Carguy, -
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All right, someone help me out here. I've got a friend of mine with a 2002 Dodge Ram 3500 4-wheel drive Cummins Turbo Diesel duallie. He's also a truck driver and currently has a Peterbuilt with a Caterpillar 3406T, but is planning to remove the Cat and swap in a Detriot Diesel 60-series in. He's wondering the feasibility and power improvements he'd see with removing the turbo from the Cummins in his Dodge and replacing it with the Caterpillar one.... I have no clue on this one y'all, so I'm open to suggestions.
Last reply by 76ChevyTrucker, -
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other than the cost to implement it, would there be any benefits to make an OHV&C engine? say... OHV for intake, 2 valves and vvt. OHC for exhaust, 1 valve and vvt. : or vice versa yes, i bet there would be packaging problems on the front of the engine and in the heads/valve covers... oh well anyone else thought of this or any other "crazy" engine designs? should this be in tech section? edit:changed an accidental smilie
Last reply by 91z4me, -
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is GM working on a 5 or 6 speed auto for the delta platform? or is one allready planned from the "series" that is starting with the 6speed in the aura?
Last reply by loki, -
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http://www.sdpc2000.com/catalog/120/produc...minum-Heads.htm Would it be possible to put this into a 4th gen Camaro? I know all-in-all it would cost around $10,000 dollars to get it installed, but would it even fit? I was thinking of maybe a 572 before, but it would just cost way too much. Thanks in advance
Last reply by mightymouse, -
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I can't find the weight figures on any of the ecotec engines, help me.
Last reply by GTO 6.0, -
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other than the possible supercharged 6.2L in the corvette, any ideas of this engine's designation and output #'s ? (not the specs from the escalade now) any news on this or ideas when (near official) news of this would appear?
Last reply by FUTURE_OF_GM, -
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I have a 2000 Pontiac Montana and a few weeks ago my transmission (4T65E) failed so I replaced it with a transmission out of a 2003 Pontiac Aztec. As far as I can tell the final drive / gear ratios are the same, but I could be mistaken. I am getting a fault code of P1810 (TFP position sensor) from the PCM and it is also getting torque lockup occasionally. Apparently sometime in 2002 the TFP assembly was updated (TSB #020730050) and I am concerned that my PCM need to be reprogrammed to accommodate this change. The transmission is in what I presume limp mode and I don’t get top gear. Although on one particular day (just as the first fault code first registered) it w…
Last reply by 2000montana, -
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I have a rented Monte Carlo for the Easter weekend with a OHV V6 with VVT (variable valve timing). Both the 3500 and 3900 in the MC/Impala have VVT as of this year. How does this system work? Is it an electronic chip? Can it be expected to function trouble free for a long time? The whole concept sounds complicated. Care to shed light on VVT if you know it /understand it?
Last reply by Ghost Dog, -
when and where will this show up in GM's engines? i'd just take a guess at "09my (or before) with the v6's, because they could have the best responce for the midsize power and efficency boosts, the v8's should be close behind, w/ the 5.3 making closer to 340-350 hp any articles anyone found on this subject, that isn't the idea pdf on gm's media site? edited for a few spelling corrections
Last reply by Ghost Dog, -
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i bet some performance parts'll be out by early 07 to boost power to about 270hp or more? or will "this" be an option on the 08 model, if the cadillac gets DI and making more like 280hp in the next year. any ideas on this, inside info?
Last reply by loki, -
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I'm just wondering here.... What would happen if we contracted the nice folks over at Catepillar to build a diesel for Chevy and GMC trucks? I know that they already have an engine avialable for the M/D and H/D (as in 4500-9500 series) but what about the 3/4-ton and 1-ton trucks, can't they get a Cat under the hood too? Thoughts, questions, and no I'm not bashing the Duramax in anyway, its a great diesel.
Last reply by 76ChevyTrucker, -
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All right, since this is completely opinionated here.....I personally believe that a bulletproof engine/transmission combination is the Chevrolet 350 strapped behind a THM400 transmission. Great power, reliability out of this world and simplicity all day long. Now y'all take a swing at it. What do you think is the best engine/transmission combination to be used by General Motors so far?
Last reply by ToniCipriani, -
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Ownign a GM redheaded step-engine as I do, an LQ1 3.4L DOHC V6, I was wondering about the "Shortstar" 3.5L DOHC V6 as found in the Olds Intrigue, etc., a few eyars back. Has that engine too been completely abandoned after a handful of years, like my LQ1? Anyone have any info, any experience with one? TIA
Last reply by ponchoman49, -
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Last year on GM's powertrain site there was a reference to a new GM designed six speed manual transmission for rear wheel drive cehicles that would share parts with the existing 6 speed automatic. Does anyone know anything about the status of this? Is it still going to happen or not? Found a reference to it here: http://www.findarticles.com/p/articles/mi_...83/ai_106733133
Last reply by Achelous, -
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I have read numerous comments in auto mags and auto guides that newer engines are more efficient and lasting longer? I am in the 200,000 mile club myself (the first time). So what are the reasons? Lower rpms by additional gears, better tolerances in the factory, fuel delivery systems? Please chime in on what is making engines last considerably longer. I am curious. The one that stumps me the most is fuel delivery? How does multi port fuel injection improve the longevity of the engine over carburetion?
Last reply by 76ChevyTrucker, -
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I would like anyone and everyone's help to figure this some things out about the Ultra V8, insider help is especially appreciated. Alright so what do we know about the Ultra V8? It will be OHC with some parts sharing with the HF V6. It will be FWD compatible. Speculation: Will it be the replacement for the Northstar? Will it be DOHC or will it be SOHC? Will it be DI or standard injection? Will it be smaller than the Northstar? Will it be RWD? Will it have forced induction applications? Will it be available with a stick? Will it fit into an epsilon? Will it be a global engine or just in the US, like the Northstar pretty much is? Will it have dif…
Last reply by Drew Dowdell, -
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They're the same size (231ci/3791cc), but the 3900 has more power and can have DOD. Is the 3900 simply a more modern 3800 with a slightly bigger crank?
Last reply by ponchoman49, -
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I saw two RPO codes for that engine on Wikipedia, LZ8 and LZ9. Both of them have VVT and DOD, according to that. What are the differences then?
Last reply by NeonLX, -
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I'm curious as to what benefit(s) the G80 Limited Slip Rear Differential would provide me on my Saturn SKY. The SKY will be a 3rd vehicle in my household and will only be used on nice sunny days (no rain unless I get caught in an unexpected storm and definitely NO snow). Should I include it when I option my image when at the dealership, or should I save myself some $$$? (anyone know the cost, presumably on the Solstice?) EDIT: $195 (Solstice), per GMBuyPower.com (is it worth the $195)???
Last reply by Bizz, -
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just curoius what every one thinks the most power N/A the 3.5 and 3.9 could do with things like direct injection, 3v, "performance breathing"? mine- 3.5L - 270hp 250lbft 3.9L - 310hp 270lbft
Last reply by Bizz, -
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page 3 current mid term technolgies. http://www.iea.org/textbase/work/2004/shanghai/Chen.PDF
Last reply by Ghost Dog, -
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Ok, think of the top of a cylinder on a GM pushrod. Ideally, you'll have 3 valves, put possibly only 2. You have a rocker assmebly sitting over the top of the valve that actuates the valve itself -- and that takes room. You don't want to limit placement of the spark plug -- ideal location is dead center of the cylinder -- to provide with a complete, uniform spark -- which will give you the cleanest, most efficient fuel burn. How do you squeeze a fuel injector into that all that? If direct injection provides the substantial power boost and fuel economy gains it's rumored to deliver, does this deliver a death-blow to GM's pushrods? I'm not saying t…
Last reply by Teh Ricer Civic!, -
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OK, so whos got it ? Is it worth it ? Switching to a 3 cyl ? I hear roughness, out of balance and vibration ? I really believe its time to leave this V6 behind and build small alloy HF V8's in the 3-4 litre displacements. There is no time like now to begin the process, hell the R&D is nearly done with the HF V6's and OHC V8's it just needs to be applied to small displacement, small dimension & weight V8's. Everyone is crying for something class leading, who else is more qualified than GM and who else has silky smooth, small displacement v8's other than the exotics ? OK, so shoot me, but tell me what you think first ?
Last reply by razoredge, -
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So, I just had my battery replaced in my 2000 Pontiac Grand Prix with the 3800 in it and my SES light came on. How long should it take for the computer to reset? Or is there a way i can find the code to see if there really is something wrong with my car? I made sure the gas cap was nice and tight.
Last reply by Justin Bimmer, -
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POPULAR MECHANICS Awards GM 3.9 V-6 For Breakthrough Technology New York - General Motors' new 3.9-liter V-6 has been recognized for ground-breaking technology by the editors of POPULAR MECHANICS in the publication's first "POPULAR MECHANICS Breakthrough Awards." The announcement was made today at the American Museum of Natural History and will be featured in the October issue of POPULAR MECHANICS, on newsstands nationwide October 11, 2005. The POPULAR MECHANICS Breakthrough Awards recognize ten individuals and teams, including one winner of the Breakthrough Leadership Award, that are helping to improve lives and expand possibilities in the real…
Last reply by Paolino, -
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On the Cobalt both engines get 25/35 with the manual transmission and 24/32 with the automatic. I know it's because the 2.4 has VVT. Is GM working on putting VVT on the 2.2? Or maybe even making a slightly smaller Ecotec with VVT? It doesn't make a lot of sense to have a the 2.2 get the same mpg as the 2.4. I'd be pretty impressed if GM had an engine which could get something in the high 20's in city driving and high 30's for freeway driving, which is something that a 2.2 with VVT could probably accomplish.
Last reply by TurboRush, -
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do you think either one will come out soon ~ next 2 years or will after market come out first? that might be good if gm could make a v6 w/ more than 300 ft lbs since the 3.8 was pretty close when s/c.
Last reply by Chevysnumberone, -
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Thought I'd put that back up ^_^
Last reply by thegriffon, -
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And that one ;)
Last reply by the_yellow_dart, -
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Link: http://media.gm.com/servlet/GatewayServlet...n=2&docid=17537
Last reply by Northstar, -
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Link: http://media.gm.com/servlet/GatewayServlet...n=2&docid=17540
Last reply by GMinTheDriveway, -
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Well now its becoming apparent it might not be realistic to keep driving the LSS with its size, weight and engine requireing 93 octane So Im looking at the Chevy site and see no listings for EPA milage on any of the models. I go to the Pontiac site and I see the 2.4 powered Solstice is 20-28 EPA. Now that is no better than the LSS except I dont need to buy premium gas, and as much as I'd like a Solstice its not half the car as the Olds... So I was wondering where to find a list of GM's EPAs on various new product.....or can someone give the EPA's to me right here or make a list on a new topic for a sticky in this powertrain forum.
Last reply by pow, -
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What is the recomended octane for use in these new "HF" engines
Last reply by razoredge, -
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Link: http://media.gm.com/servlet/GatewayServlet...n=2&docid=17541
Last reply by Ghost Dog,
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