Quote:

Monte,
Knowing that all combos will be different...What is your preferred comp ratio and quench if you don't mind saying...Thanks Gary !


Many factors come into play on that Gary, but assuming we are building an "all out" nitrous motor, that will see in excess of 600hp for a small block or 800+ on a big block, I do have some numbers I shoot for. I don't like more than 13.5 or so on compression for any combo. Chad's 632 only has 12.2 and runs like a raped ape on the spray, but a little more would probably help it. The 738 is close to 14.1..............Quench is tricky, because the head comes into play, but on most small blocks I will want .080 at an absolute min, but prefer closer to .100. Most 600" or so big motors in the .100 range and our 738 has .140. More stroke, usually means you need more quench distance to make it happy. As far as camshafts go.......Billy said smaller, that is NOT the way I go. Most of the nitrous motors I do have absolute MONSTER camshafts in them. To use a lot of nitrous, you have to get it in and out of the motor, hence I do some big stuff. I have small block cams approaching an inch of lift and many BB cams over that by a good bit. LOTS of duration at .050 and wide LSA numbers. The CAMSHAFT is where 9 of 10 guys miss the setup on a nitrous motor

Monte