Re: 2001 Pure Stock Drags
Pete,
Congratulations on qualifying #1 at the PSMCDR (with a certified car no less)!
I am not aware of any other track or dynamometer tests of ZL-1s or second design L-88s with the factory exhaust system installed during that time period.
There was a 1995 dyno test of a ZL-1 engine that was published in Chevy High Performance that used the Camaro chambered exhaust, but I don't think there was anything done with the engine in stock configuration other than to establish a baseline for subsequent changes... They didn't spend a whole lot of time fine tuning the stock engine. I would imagine that you have seen that test already, but if not, let me know as I believe I saved the post for my files and can forward you a copy.
To the best of my knowledge, the second design L-88 is identical to the ZL-1 in every way with the exception of the block. The actual option description for RPO ZL-1 (Corvette) reads "aluminum cylinder case" and, in fact, you had to first order the L-88 to get it. There were definitely changes between the the first design cam and the second design ZL-1 cam... I'm going from memory, but it went from something like .540/.560 to .560/.600 (I can verify this and repost along with the GM duration figures as well if you like). The primary reason for this was to take advantage of the new open chamber cylinder heads. In fact, the engineers determined that the new heads and cam were worth about 40 horsepower even with the loss of a half point of compression.
By the way, are you planning on taking the ZL-1 to the PSMCDR next year or maybe leaning towards the LT-1 Nova?
Regards,
Stan
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