Wow... good to know.

 

Most people only remember the 405hp rated version of the Z06, many have forgot the 385hp rated first year version which bled over to the final LS1 engines.

 

No... this isn't true. The final LS1s had a 241 head casting while all Z06s have/had the 243 casting which has a slightly different chamber shape, different valves (02-04), and D shaped exhaust ports.

All 2001+ corvette motors got the LS6 block w/ bay/bay windows for better pressure equalization at high rpms and the LS6 intake manifold. Mid '01 the F-bodys got the LS6 block and intake as well.

I would agree that the later F-bodys got the best of the LS1 tech just like the C5s, but they do not have '01 Z06 parts on them.

The '02 Z long block differs from the '01 Z in valve weight, valve springs, and a slightly different cam w/ more lift.

 

You missed the post that I had stated that, the intake port is actually a redesign in the 241 head to match the LS6 style intake in the 01 cars. The exhuast port along with reduced chamber size were the only real difference. You would not notice much of a power gain if you slapped on a set of 243 heads from an 01 LS6 onto a stock LS1 with 241 heads. The camshaft was the real difference between the motors. Many people were fooled into that thought. That 4cc difference was hardly a boost in performance.

Which is what I had stated, the block can be found in 01-02 F-bods as well. That is why the 01 cars are very similar, and the only real difference is the exhuast port, chamber size, and camshaft.

I would say when they have the same block, same intake, and nearly the same head, it is really very little difference.

Right, which I seperated the 02 LS6 from that grouping, because like I said the 02 actually came with a camshaft that was designed for the motor, unlike the 01 which used an off the shelf "Hotcam" like camshaft. The 01 LS6 was not that big of a departure from the 01-02 LS1. The 02 LS6 however was very much different and actually showed in dyno results that it was a better tuned engine.

 

All I'm saying is that the '01 Z06 still has a different cam and heads than the LS1 and the '02-'04 LS6 motor has yet another cam, but the exact same heads as the '01Z.

You seem to be saying there's very little difference between the '01 LS1 and the '01 LS6 when in reality there's about 30 rwhp difference. 305-315 rwhp vs. 340-350 for the LS6. '02+ Z06s typically dyno'd 355-365 stock... most will tell you an '02+ Z puts down about 10 rwhp more stock for stock and mod for mod (bolt on wise)

 

Yet you are argueing the same point that I stated in a post I think you missed...

https://www.vadriven.com/forums/show...9&postcount=60

I hate to burst your bubble but there are plenty of 01-02 F-bods that dynoed in the 340's with 6 speeds bone stock. Mine hit 326 with an auto bone stock, like I said there is very little difference between the power output, because they used similar parts. A head is not going to make much of a difference with .4 compression and an exhuast port on the 01's. The camshaft was its biggest contributor in 01. Then they really designed a camshaft that worked with those heads and got the power the were looking for in 02. They could have made a difference in 01 if they had not used an off the shelf GM "hotcam".

 

Sorry... but won't believe anything much over 320 w/o a dyno sheet and even then I'd be suspect. 340 for a later LS1 is rather optimistic. That number is the norm for a bolt-on car w/ headers and tuning.

 

I meant in the pony car market of course, obviously the Z06 is doing quite well. And I'm glad the C6 Z06 came out, cause it forced Dodge to up the ante and as a result we get 600hp with the '08 Viper. Which hopefully will be upped again after the Z07 (or whatever the hell they decide to call it) comes out. Gotta love hp wars

 

I just told you my auto equipped car dynoed 326rwhp bone stock, why would it be so far fetched that a 6 speed equipped car could not hit in the 340's? That is only a 14rwhp difference with a much more efficient drivetrain. Hell my buddys 2000 SS with a 6 speed bone stock hit 316rwhp, and that was with a LS1 intake, 853 heads, EGR, a wider LSA stock camshaft, and a true LS1 block same dyno same day (ABACUS). Take a look in the LS1tech dyno section, it is not uncommon.