Quote Originally Posted by Thighs
m20s have alot of boost potential... and 2 more cylinders... and torque... lol
But he said S52...the S50 and S52 are bored out versions of the M50/M52 block. In stock form they can't hold anywhere near the boost you can run through a M52. I believe Ulysses (CardCounter) still holds the record on a stock M52 block pushing about 25psi making 704whp before bending a rod. He daily drove it in the mid 600's for a long time beforehand.

You definitely can't go wrong with a M20 though, e block for even more torque and you can push 20+ PSI through it in stock form. I've seen numerous ones with 200 to 300k miles making well over 300 to 400whp...