Measure twice cut once! lol.
Just to throw it out there, I had my motor set up for 8.75 to 1 and later found out that it was really 8.4 to 1. It always ran great and made real good power. Then further down the line I changed the pistons to flat tops to raise the ratio up . Got it to 9.5 to 1 and it didn't give any better response down low. It did make more power with less boost for sure though.. I myself like the lower ratio 100%.. Just throwing out my real world experience because I know how these kind of things really make for sleepless nights trying to make the right move on things.. And also , the higher I had the ratio the more tuning challenges I had .. I'm building a new twin build and im shooting for 8.75 to1. If it goes lower I wont even care..
Good luck ....
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My Half AN Injun.....
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