Originally Posted by hotroddr
3-4 years ago I put a ZZ4, Demon carb, in a 57 Chev PU, 3.7 posi. I expected better performance. I actually like my current Jon Barrett motor much better- but then I don't turn them up past 5,000rpm any more. Bill
What horsepower is your Jon Barrett engine? Having owned both, I would say you are in a good postion to evaluate the Barrett and the ZZ4. Do you give the Barrett engine a slight edge or is it a hands down runaway? Thanks your opinion......