bp944

iTrader: (4)

I'm hoping to get this set up, 3.905in bore on a ls1 block, 64cc heads, and right now the forged pistons are +2cc. Are those pistons going to run my CR too high for 91 octane gas? Am I going to run into a lot of daily driving issues?

09camaro383

iTrader: (2)

you compression ratio is going to be about 11:1 im running that CR on 91 octane with no problems!!

JM0523

You will be fine, should run awesome on 93

bp944

iTrader: (4)

I don't have access to 93 but I guess I'll go with the 2cc pistons and we'll see what happens.

09camaro383

iTrader: (2)

In Arizona they only sell 87, 89 and 91