Anyone ever run Speedmaster Heads on their small blocks

rumblefish360 said

Does anyone know if the Promax heads are the same head?
Shocker 185 Mopar CNC (Sold in Pairs) - PROMAXX Performance Products

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I would say no
Look at the difference in the combustion chamber.
Mopar Chrysler SB 318 360 170cc 65cc Hydr-R Complete Aluminum Cylinder Heads