Mopar Performance Purple Mechanical Camshaft - P4120653AE Cam Card

rumblefish360 said
Good job AJ. Well done, well done.

Running a high compression engine with iron heads on pump will ether require some retarded timing or race has mix of 50/50. The highest I personally run on iron heads was 10-1. A Hyd cam @ 248. 93 was fine.
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On my 273, I'm at 9.68 with a Isky E4 ( 216° @ .050/260° advertised .425 lift 108°) No detonation but I wonder if the polished chambers help.