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Discussion Starter #1

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The peanut port heads are like 122-125cc's. I'd run these pistons:
http://www.summitracing.com/parts/UEM-KB782-030/
With a 122cc chamber, these will put you right at 10:1, plus they're a forged piston. Running 10:1 with iron heads on a big block using a domes piston on pump gas, I'd prefer the peace of mind having a forged piston in there.
 

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Discussion Starter #3
I did not realize the chambers were that big.

With cc size of the combustion chamber on these heads, I probably need a .250-.300 dome to achieve 10:1 and a little higher is compression is ok?

Thanks for all the info
 
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