Originally Posted by gregsdart
A starting line ratio of 9/1 is very close to optimum, maybe a tad high. 4.88 x 1.8 would be 8.78, not too much unless you have very large stroker motor. I get away with 11.17 due to using a soft launch (low rpm) and 33 inch tall tires.


I’m interested in what you are trying to say here. It’s a 500ci Indy maxx aluminum block, just 4.15 stroke.