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With these heads, they are the stock 62cc chambers. I am using a stock head gasket, so I have a stock compression of 9.5:1. I could be making more power very easily.
Whats goin on. I was reading around on the thread and your setup thats in your sig. caught my attention. I just ordered the same heads and cam a week ago. I'm waiting for them to come in, but i was wondering how do you like that combination.