i am planning on building an engine... I have a couple of small blocks (a 350, and a 305) I want to build a stroker, but i dont know high compression i can run on 94 oct.. i have an extra set of 58cc heads, and a set of 64cc heads the pistons i plan on running are 60+ Speed-Pro 383 domed pistons. I believe the 58cc heads would put me around 12.5:1 is this too high for 94? what is the highest compression I can run on 94 would there be any benifets to using a 305? I believe I would have to modify the block to use the 400 crank... would i be able to use 60+ 350 pistons? would I have to sleve the block? I am just trying to get a high tq sb.