Quote Originally Posted by Matt167
get some 49cc darts if you have the clearence to run them. that will get you right around 9.5:1 I belive, and you could run a larger cam.
49cc heads would put him at 10.17:1
The problem with that is that the stock Chevy pistons don't have a crown with enough flat area to achieve a good squish and you can't run over about 9:1 without a good squish. You'd have to go to aftermarket dished pistons with the dish offset to the chamber side of the piston to make it work right. Not only that, but there is way too much piston deck height in the stock arrangement even if the pistons were true flat-tops. You'd have to deck the be-jesus out of the block and if you're gonna do that, you may as well use the correct pistons in the first place.