octane boost

[Chevy454]

Did you happen to cc the heads/pistons, etc? You can actually over do it with octane...it's better to have too much as not enough, but too much octane and not enough squeeze can hurt performance, as it did with one of our L-72s. I used all factory stock pieces, cc'ed everything, and it came in at 10.2:1 on an 11:1 advertised rating. I had to be careful of the amount of race fuel I mixed with the premium, or the results would show up in the time slips. It's more noticable in cooler air, but it's still there in the warm air as well.