Quote:

On my bench an OOTB RHS head with a stock 1.92 valve goes 244-246 cfm from .500 to .600 lift. That's it.




I agree, & the way my mild 360 magnum performed i was very pleased with them OOTB.

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