415HP from 318ci IS POSSABLE!!

Smooth,
I hone all my engines the same as it's mainly for ring seal for a given ring, as for ring gap this is in reference to where the ring actually sits on the piston and how close to the top of the piston and what the piston is made of more then how wide it really needs to be. So I guess the distance from the top determins the ring gap. Closer to the top the wider it needs to be, father away the tighter it can be. It's all relitive to how much heat the piston is going to see.

As for compression on alcohol anything over 150 psi will burn alcohol, so you could have a 9:1 engine and have 165 psi and it would run on alcohol. Cam overlap is the key here, just as you could have a 15:1 engine and 107* of overlap and still have 165 psi cylinder pressure, at cranking.


Ramcharger,
Comp made the custom cam for me. Just under $300.00 for the cam and needs a spring with 170 lbs. @ 1.550. My springs are 130 @ 1.62 and 300 open.