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The COMP Cams Magnum roller rocker for Pontiac V8 (265–455) uses a 1.65 ratio and 7/16" studs to boost valve lift for street applications. Constructed from 8620 chromemoly steel with a roller tip to reduce friction, the stiffer design and accurate ratio help maintain lift under load. Intended for engines with open spring pressures below 350 lb, it’s positioned as a durable upgrade over lesser alternatives.
COMP Cams Magnum Roller Rocker Pontiac
