Look at their proposed hp/torque numbers. I hope Ford has their ducks in a row on this one.

GM Picks Tonawanda to Build New Duramax
Jun 18, 2007
Diesel Progress


General Motors Corp. said it will invest $100 million in its Tonawanda, N.Y., 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 investment includes a 200,000-sq. ft. facility renovation, new machinery, equipment and special tooling. In addition to the $100 million facility investment, GM will invest an additional $41 million for vendor tooling, containers and investments at other locations necessary to support the Tonawanda operations. Construction is slated to begin later this year and production of the 4.5-liter V-8 diesel engine is scheduled to begin in the fourth quarter of 2009.

The new, 4.5L V-8 Duramax turbocharged will have an overhead cam, four-valve design and is expected to fit within the same space of a small-block V-8 gasoline engine. This compact size is made possible by using integral cylinder head exhaust manifolds, integral cam cover intake manifolds and a narrow block, GM said, adding that the engine will meet 2010 emissions standards. Outputs will include ratings in excess of 310 hp and 520 lb-ft of torque.

GM said other technical features include aluminum cylinder heads with integrated manifolding; a variable-vane turbocharger with intercooling; a compacted graphite iron block for a stronger and lighter engine base (compared to lower-strength aluminum or heavier grey cast iron); and fracture-split main bearing caps and connecting rods. An electronically-controlled, ultra-high-pressure, common-rail fuel system is used.

 

OHC.... bah. Duramax is definately being top comp for high performance, even with the Isuzu tag on them, but they are too quiet. When I get a diesel, I want it to rat-tat-tat all day/night, like the Powerstroke...

 

this ought to get interesting

 

All I know is, I will be buying one of the 1/2 ton diesel trucks. I am just waiting for these manufacturers to get going. I'd really like to have an '09 F-150, so I hope its got the diesel. Props to GM for creating marketplace competition.

 

Last word that I heard was that none of them will have one available until the 2010 model but Ford. Dodge and GM will all have them.

I also read a report this morning that Isuzu is gearing up to supply Toyota with diesel engines in the near future so I'm not sure if this Duramax will have any Isuzu influence or not.

 

Even then you don't want a first year run vehicle. By that time my 05 will be in need of an upgrade. I'll definitely go the 1/2 ton diesel route.

 

i dont like tonawanda.


this has been a rumor for a while. dont really care that it came true.

 

just thought about this, but the deisel platform would be a great time to revive svt. i can only dream for a stock lightning putting out 500+hp and 800+ lb.tq. +a 6 speed

 

SVT + Diesel will NEVEr hapen. Emissions would be an utter disaster. Sorry

 

I didn't say that. One may never see the underside of a Tundra hood but it could have commercial ramifications about being able to drop one in a GM product.

Toyota bought 5.9% of Isuzu last year. Not sure how big a stake GM still has in them.

 

aww, ya had to go and ruin it for me didnt ya?
guess now ill have to do it myself

 

I don't see where it says 1/2 ton, are we sure that's really the plan? Or do they have a lower cost diesel option and virtually eliminate gassers... and maybe kill the half-ton full size in the process? Just a thought.

 

The article says light duty. Their 3/4 and 1 tons carry the HD (heavy duty) moniker. Plus, with Ford and Dodge having already announced their plans to have them in 2010 GM would be missing out big by not having one available.

Kill the half ton? They would be cutting their own throats. I don't know what the percentages are on the half vs three quarter ton sales numbers but I would imagine it's pretty lopsided. Most people have no need for a 3/4 ton or larger truck.