MauriSSio

Z-28 and Trans-Am isnt in GM's vocabulary anymore.

Demon SS

as has been said the LS2 is different mainly in the bore size being a 4" bore on a 3.622 stroke. one thing this means is that a motor builder can make a 404ci aluminum block stroker by increasing the bore to a 4.01 and the stroke to a 4 with out the big cost of resleeving the block or the extra weight of the ironblock

here are a couple of good links for some detailed info the first one is about the 3 valve setup go to page 5


http://www.sae.org/automag/techbrief...1-111-9-26.pdf

link about the new engine(LS2)

http://www.corvettemuseum.com/specs/...wertrain.shtml

mullettour

There probably isn't that much difference in a Gen III and a Gen IV. Probably about as much difference as there is in a Gen I and a Gen II which is pretty much just a 1 piece rear main seal and a crank that goes with it. Heads, cams, pistons, rods and just about everything else is interchangeable. Look at how long the Gen I and II were in production and look at how long the Gen III has been in production. I dont think GM is going to do their first complete redesign of the SBC engine and then after 7 years completely redesign it again.
Just my $.02.

robb4964

Agreed ........

dist0rtion_69

When they say ~23 mpg.. Do they mean 23 mpg city, or 23mpg
with an average of city/highway? If its an average of the two,
I don't think the ls2 is going to get more than 20 miles to a tank
more. However, I was happy with the LS1 gas milage, so I won't
be complaining with the ls2

Cheers,

robb4964

From what I read , the gas milage will be just as good if not better then the LS1 Impressive numbers

Capn Pete

Yeah, the generation difference is probably more marketing than anything..............it's not like comparing a Gen-III to a Gen-II where nothing will interchange. Everything from a Gen-III should bolt onto a Gen-IV and vice versa.

Basically the 6.0L uses a standard 4" bore like the old Gen-I/II blocks used, but with the same crank as the LS1/6 use (3.62") which makes it like a "stroker" compared to the standard 3.48" stroke of Gen-I/II.

When I read through the differences listed on the page that "Demon SS" posted, they acknowledge "floating wrist pins help quiet the engine"...................I wonder if the previous LS1/6 design is what leads to some of the engine noise that they suffer besides piston slap?

Well, the more I read about the new C6 and the LS2, the more I think I want one!!!

1KillerV6

OK, I got all this info out of Car and Driver Feb.04 issue about the 05 Vette.

Chevrolet bored out the aluminum V-8 from 5.7 liters to a nice round 6.0 liters. Each cylinder of the siamese-bore engine is now 101.6 mm across, instead of 99 making it a 364ci, 5964cc. Chevy also increased the compression ratio from 10.1:1 to 10.9:1, raised the redline from 6000 to 6500, substituted a cam with greater lift, and added a freer-flowing induction system and an exhaust with 10% less back pressuse. The result is 400hp @ 6000 rpm and 400 lb-ft @ 4400. The 0 to 60 sprint should come to about 4.3 seconds. The next year (06) the Z06 is due and rumored to have 500hp, dry-sump lubrication system, and a host of lightweight materials including aluminum side rails in place of the base car's steel ones.
Also: 0 - 100 is 10 seconds
1/4 mile - 12.7 @113
Top speed - 180 drag limited
Fuel Economy
City - 18-19 mpg
Hwy - 25-28 mpg

MauriSSio

its only gonna take 10seconds to get to 100 but take 2.7 seconds to gain 3 more? does that make sense?

Capn Pete

That's 13 more mph, not 3..............and if you look at any timeslips from the track, the TIME it takes to cover the first 1/8 mile and the last 1/8 mile reduces, but the SPEED gains across the full 1/4 mile reduce as well................meaning you gain speed pretty quickly at the start, but by the end of the track air resistance is increasing, and you stop accelerating as quickly (but in terms of time, you cover more ground in the same amount of time).

In terms of the LS2, I'm still pretty skeptical about those #'s. I think the new 'Vettes may be somewhat underrated like LS1 F-bodies were, and are likely going to put GM's horsepower rating at the wheels, same as how LS1's can put 310 rwhp, when GM only rated them at 305 - 310 HP in the first place.

MauriSSio

LOL im retarded,my math wa WAY off,that makes sense. GM doesnt put the rear wheel HP as its rating thats just a myth. The reason LS1's make more than there rating (F-Bodies) is cuz its the exact same one used in the Corvette (345HP-350HP). They werent gonna give the F-Body the same HP rating as their flagship car. I think 400 HP is what it should be makin. Its gonna be almost 20cid. increase plus a bigger cam.

ZZtop

Man, those numbers put a base model C6 at the speed of a C5 Z06. Hot damn! Can you say 06' Z06 Viper Killer!

MauriSSio

i wouldnt call a 500HP Corvette a "Viper Killer" i mean,its gonna be roughly the same weight and same HP as the Viper but its gonna have less TQ. Anyways it might run even with a Viper but i wouldnt call that a "Viper Killer"

Chewbacca

Gen I (L98) heads and (I believe) cam will NOT interchange with the GenII (LT1).

The Gen I heads definitely won't work due to the LT1's reverse flow cooling.

I don't think the Gen I cams will work because of the needed LT1 specific water pump / Opti drives.

ZZtop

I agree its not gonna destroy it in times, but it may beat it. The viper has tons of power and torque, but just never seams to turn the track times you would expect. The old Z06 is pretty damn close to it and I have personally seen a factory stock 02' Z06 with an awesome driver and perfect conditions run a 11.9x on the factor tires. Supposedly this has been done by others as well. Theoretically the new one will be capable of even faster once in a life time runs like that. And from what I have seen and read of the new Viper, and 11.9x already beats it. It is in the low 12's I believe 12.2-12.4 on average. Also, the Z06 is much roomier inside and has better interior fit and finish than the Viper, while costing tons less and getting better gas mileage while doing all of this. I have always dreamed about owning a Viper like most kids and guys, but I would honestly consider a new Z06 over a new Viper. Assuming I had the money that is. I think you may see a Viper vs. Z06 shootout in Road and Track in 06' in which the ZO6 wins, unless of course Viper steps up the game before then. If you read the old shootout, the Corvette basically one every category except for raw speed and just barely lost that one.