Same valve. Cam lift is 468 and machine shop put a stronger z-28 spring on them. I am still using the factory rocker arms.
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1972 SWB, VIPER BLUE, TILT, POWER DISC BRAKES,350-AUTO, FACTORY AM/FM. 1971 Camaro SS factory 4 speed project car. " I LOVE IT WHEN A PLAN WORKS"
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