How to get 400 hp out of 1971 340 .30 over
Roller cam and rockers
He believes it would gain 25-30 with a 750dp. I bypassed that for a tunnel ram.
11.3:1 compression, I’m at 5000 ft
Roller cam and rockers
He believes it would gain 25-30 with a 750dp. I bypassed that for a tunnel ram.
