Quote:
Originally Posted by JD311
60539 would be the correct comparison for the bare heads. 60589, are the older style chamber that doesn’t need cnc’d but just polished. But they actually cost more now than the Cnc heart shape chamber. The cnc e’s are 60539 at 72 cc. Which are 870.50 through summit.
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Isn't it great to have so many choices now! The Pontiac hobby is alive and well! Thanks for the info.