Thread: New website: "What class does this run?"
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Old 01-31-2021, 08:44 AM   #9
Dwight Southerland
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Default Big block Chevy oval port GMPP replacement head
All the Tech Bulletins for 1965-76 Chevrolet have added the 12363391 GM Performance Products BowTie oval port head as a replacement for Super Stock only.
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