Quote: I know it's one of basically none, but there is a true, factory ZL-1 corvette around here that was a Gulf oil research car. It's owned by a gentleman named John Mahr.
I don't know of a stock mopar big or small block that could touch that car.
This is interesting I have own a number of vette's over the years and currently have a 2005 so I do know something about them. They claim there where only 2 factory built ZL1's ever produced 1 is owned by Roger Judski of Roger's Corvette's here Maitland Fl and it is very well documented. He has tried to track down number 2 and there was someone on the west coast that claimed to have it and it was a basket case but when Roger checked it out they could not produce any documentation on the car so he passed on it. There where a number of vette's that had a ZL1 installed in them but not at the factory.
I'm betting if you dig you will find THREE Corvettes with ZL1 engines.... three different colors too! White car- Kevin Suydam car VIN 6753, Yellow car Roger Judski (the "drug car") VIN 29219 and John's automatic car VIN 10209
As for the question, the answer is EASY.
On a MoPar forum, the MoPar was faster for sure from the factory.
On a Chevy forum, the Chevy was faster for sure from the factory.
