Quote Originally Posted by flak_monkey
I can't speak for your cars, I've got a 95 z28. In an LT1, you can pick up more HP by getting rid of the cat.

LT1, stock, with longtubes, off road y pipe, and a tune will see about 30hp. Just by getting rid of the catalytic converter, you can get about 8.
QFT , but look at the size difference in motors here, plus it makes the exhaust sound better IMO.