I agree they are a little big for a 302 unless you have other mods to significantly increase the airflow through your engine.
Also, I don't know if the 60cc combustion chambers will be ok with a stock 302 or not, but on my 393 with 60cc chambers I am using a 12cc dish piston to get the compression down to a pump gas friendly 10.9 to one. If I had used flat top pistons, like those in a stock engine, the compression would have been almost 13 to one.
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