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Discussion Starter · #1 · (Edited)
Chevy's model forecasts are out for 2008.

They only show the 427 LS7 listed for 2006 & 2007.

For 2008 there are 2 new Corvette engines listed and NO LS7:
- LS3, 6.2L NA
- LS9, 6.2L SC

Possibly using the three valve haed ??

I'm guessing 450 HP & 600 HP respectively.

Credit to Rick Conti
 

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DJWorm said:
Chevy's model forecasts are out for 2008.

They only show the 427 LS7 listed for 2006 & 2007.

For 2008 there are 2 Corvette engines listed:
- LS3, 6.2L NA
- LS9, 6.2L SC

LS9, 6.2L SC :jawdrop: Supercharged :D
 

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Remember when the 6.4 liter motor was going to be in the new Z06 and it didn't make the grade...lot of time between now than then.
 

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DJWorm said:
Chevy's model forecasts are out for 2008.

They only show the 427 LS7 listed for 2006 & 2007.

For 2008 there are 2 new Corvette engines listed and NO LS7:
- LS3, 6.2L NA
- LS9, 6.2L SC

Possibly using the three valve haed ??

I'm guessing 450 HP & 600 HP respectively.

Credit to Rick Conti

It makes sense that the "3" in LS3 would elude to the 3 valve heads.
 

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They getting 6.2 liters with bore or stroke?
4" bore/3.622 stroke - 6 liter
4" bore/3.75 stroke - 6.2 liter
4.07 bore/3.622 stroke - 6.2 liter

I would think stroke.
 

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427 C6 said:
It makes sense that the "3" in LS3 would elude to the 3 valve heads.

Does that mean the the LS1 had 1 valve per cylinder and the LS7 has 7 valves per cylinder.. :D not to mention the famous 6 valve per cylinder LS6..that is why the Z runs so good.. :thumb:..crazy me.. :crazy:.. I was thinking that it was just the natural progression of sequential numbers..ie LS1, LS2, & LS3
 

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DJWorm said:
Chevy's model forecasts are out for 2008.

They only show the 427 LS7 listed for 2006 & 2007.

For 2008 there are 2 new Corvette engines listed and NO LS7:
- LS3, 6.2L NA
- LS9, 6.2L SC

Possibly using the three valve haed ??

I'm guessing 450 HP & 600 HP respectively.

Credit to Rick Conti
thank-You!
:cheers:
 

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I would like to see the ls7 exist for the C6 z06 for years to come. I'd imagine a supercharged ls2 would be great for the Coupe and convertible.

Superchargers are great for street cars...yet not quite as impressive as a 427 Naturally aspirated track oriented car.

I see a supercharged ls2 coupe with Z51 suspension for 56 grand...a base 425 hp ls2 for 45 grand...and a C6 Z06 with its 427 ci engine/aluminum frame/dry sump oiling system and larger wheels and tires as well as special body work for 66 grand...

I believe the early demise of the ls7 is incorrect. I could be wrong but I believe the engineering R & D costs could not be amortized in a two year or three year period...

The ls7 will be around for quite some time. Its not even subject to a gas guzzler tax ....which in and of itself is quite amazing considering 505 hp!

Time will tell whose right and whose not.

LS7's rule!
 

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Steve Tillman said:
Does that mean the the LS1 had 1 valve per cylinder and the LS7 has 7 valves per cylinder.. :D not to mention the famous 6 valve per cylinder LS6..that is why the Z runs so good.. :thumb:..crazy me.. :crazy:.. I was thinking that it was just the natural progression of sequential numbers..ie LS1, LS2, & LS3
GM changed the name from LS1 to LS2 because of the generation change,
not because of a radical engine redesign.

I thought that GM would use the name "LS3" becasue of the unprecedented use of a 3 valve head.

But,
I guess I am an a$$hole.
Thanks for pointing it out. :roll:
 

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427 C6 said:
GM changed the name from LS1 to LS2 because of the generation change,
not because of a radical engine redesign.

I thought that GM would use the name "LS3" becasue of the unprecedented use of a 3 valve head.

But,
I guess I am an a$$hole.
Thanks for pointing it out. :roll:

Lighten up man..I was just making a joke.. :thumb:
 

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I think my step-dad had a Toyota Corolla 3-valve head, beater shop car in 1987. :p
 

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Mercedes had a whole generation of 3-valve 2-twin plug heads. Just replaced this year...although the V8 is still in production, for a few more months or so.

My guess would weigh more to two cams in the block rather than 4 valves. It is just hard to meet passenger car fuel economy, emissions, and performance criteria without varying the cam timing.
 

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Six speed manual trans Corvettes get 28+ on the highway and the new Z06 is supposed to get 24-25 w\no gas guzzler tax..that is pretty good MPG w\o complicating and adding weight to the good ol SBC.. :thumb:
 
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