How much compression can I get away with on pump gas. I was thinking 11.1,but now I have seen 12.1 and have heard some guys getting away with 13. I'm gonna build a stout stroker for spray. I'm gonna run a pretty big hydraulic roller (250s/260s),and I know that will bleed off some of the compression. What have you guys seen people getting away with. Of course at the track I'll be using some 110 or 116 on the bottle,but I still want to be able to cruise around on 93.

 

A search would reveal the answers, as this has been discussed many time before. Also it should be discussed in LT1 Tech. Transfering.