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#66 heads
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08-19-2019, 12:25 PM
tc
Chief Ponti-yacker
Join Date: Dec 2004
Location: Iowa
Posts: 803
You should not need to mill anything to get 9 to 1 compression with 6X heads. 6x-8-100cc's, deck clearance-6cc, gasket-10cc's. 116cc's with a 455 is 9.0 compression.
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