LS1 vs.LT4 vs.LT5 vs.LS6 vs.LS7 etc. discussion continued

[Hib Halverson]

I have one of each–1995 C4 ZR1, 20014 C5 Z06 and 2012 C6 Z06.

My ZR1 is modified to a hair over 500-hp. Big deal back in 97/98 when Van Dorn and I did the motor but not such a big deal nowadays, I s'pose. The C5 is making about 445 though mods–CAI, rockers, X-pipe and calibration. It's just a hair quicker in an eighth than the ZR1 mainly because it weighs quite a bit less. Beyond the 8th mile, the extra horsepower begins to help the ZR1 catch up.

As for the C6...no contest. The 427 is quicker and faster–and that was before I started modifying it. Right now, the backdated exhaust, cooler ECT and some cal work has me at about 515. Plus, the car is easier to get off the line because it has launch control. Enable launch control, bury the gas, quickly release the clutch then keep your foot on the floor and shift. The most fun I've had in a street car, like...ever.

[Karl]

Originally Posted by Hib Halverson

As for the C6...no contest. The 427 is quicker and faster–and that was before I started modifying it. Right now, the backdated exhaust, cooler ECT and some cal work has me at about 515. Plus, the car is easier to get off the line because it has launch control. Enable launch control, bury the gas, quickly release the clutch then keep your foot on the floor and shift. The most fun I've had in a street car, like...ever.

What is your opinion about the failing valves and valve train isssue? I have been looking into swapping into one?

[XfireZ51]

No question newer technology is awesome. However, I would love to see GM repeat or beat what was accomplished by the ZR-1 at Ft. Stockton.

[Hog]

Originally Posted by Hib Halverson

I have one of each–1995 C4 ZR1, 20014 C5 Z06 and 2012 C6 Z06.

My ZR1 is modified to a hair over 500-hp. Big deal back in 97/98 when Van Dorn and I did the motor but not such a big deal nowadays, I s'pose. The C5 is making about 445 though mods–CAI, rockers, X-pipe and calibration. It's just a hair quicker in an eighth than the ZR1 mainly because it weighs quite a bit less. Beyond the 8th mile, the extra horsepower begins to help the ZR1 catch up.

As for the C6...no contest. The 427 is quicker and faster–and that was before I started modifying it. Right now, the backdated exhaust, cooler ECT and some cal work has me at about 515. Plus, the car is easier to get off the line because it has launch control. Enable launch control, bury the gas, quickly release the clutch then keep your foot on the floor and shift. The most fun I've had in a street car, like...ever.

Are your quoted power outputs engine or chassis dyno?