New Motors

[MASH4077]

With the new Yukon having an alluminum 6.2 liter block, is this something we can look forward to in the Silverados? The 6.0 liter is the same its been since 99. Seven production years at the same horsepower and torque is a long time. Anybody have any info on other new blocks?

[Chris97K1500]

I've read on a few GM websites that a 6.4L was developed to possibly go in the Corvette before the 7.0L was opted for instead. Supposedly they got about 500hp out of it. That's the only other block I've heard of. I'll try to find the write-ups. Chris

[ZZebes]

the 6.2L is almost confirmed it is a brand new block design that has aluminum block and heads and produces 400bhp and will be mated to i thing the 680le tranny.

[ChasSidwa]

Here is the lineup I've heard of:

 

The Gen IV Vortec V-8 truck engines are built in a variety displacement and power combinations, including versions with aluminum cylinder blocks. All engines share a basic architecture that includes 4.400-inch bore centers * the same design foundation on which the original small-block V-8 was developed in the early 1950s. Initial Gen IV engine offerings include:

 

4.8L iron block (RPO LY2), rated at 290 horsepower (216 kw)*

5.3L iron block (RPO LY5) with Displacement On Demand technology, rated at 320 horsepower (238 kw)* * including E85-capable version (RPO LMG)

5.3L aluminum block (RPO LC9) with Displacement On Demand technology and E85 capability, rated at 320 horsepower (238 kw)*

6.0L iron block (LY6) heavy-duty engine with variable valve timing, rated at 350 horsepower (261 kw)*

6.0L aluminum block (L76) with Displacement On Demand technology and variable valve timing, rated at 355 horsepower (264 kw)*

6.2L aluminum block (L92) with variable valve timing, capable of 380 to 400 horsepower (283 to 298 kw)*

[george.underwood]

So when is GM going to offer some really efficient alternatives whose technology is avialable now? I would like to see some of the following as optional engines:

 

- Factory turbo option for the standard venerable V8 (gas) offerings

 

- Common rail diesel (maybe with turbo option also)

 

- E85 optimized : Slightly higher static compression and a high boost turbo to take advantage of E85's higher octane. Static compression would be maximum possible that could still burn premium pump gas when E85 not avialable. This is what SAAB is doing with thier BioPower series engines. I dont know if this gets back all the mpg loss with E85 but its gotta help due to efficiency increase. (Based on some publicised measurements, and my own tests on mine, today's flexfuel vehicles get 25% to 30% less mileage on E85)

 

Why not a smaller engine option for the soccermom-mobiles based on some of the above? Why not a bigger engine based on some of the above for the towers and sportsmen. Seems like GM would need to do something like this to meet future fleet mileage mandates.

[george.underwood]

Boy this topic is dead!

 

OK How about this. I'll seriously consider a new silverado if it has one of these.

 

GM announces new 4.5L V8 Duramax diesel for half-ton trucks and HUMMER H2

[FinalBreath]

yea