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The COMP Cams billet keyway timing set for OE-roller Chevrolet 305–350 applications uses precision-machined steel billet gears and a prestretched, heat-treated double roller chain for strong durability. The 9-keyway crank sprocket provides 2° incremental timing adjustments with up to an 8° range, delivering tunable timing control suitable for street and race engines using OE roller setups.
COMP Cams Billet Timing Set CS OE Roller Keyway Adjustable
