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Joe, my 416 is open chamber W2's, zero deck, 11.2:1. 180psi cranking compression. Cam is [Email]272@.050[/Email] single pattern. It ran OK on 93 octane @ 30* timing. Jim



Thanks Jim, i think i'm going to go with the XE284H, i ran this cam twice & really like it. Just wondering if i should run 1.6 roller rockers or stay with 1.5s, this will put the lift at .537,.540

75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU