COMP Cams Timing Chains 8146 COMP Cams Ultimate Adjustable Billet Timing Set with high strength billet gears and seamless roller timing chain delivers years of reliable service. The set features 2-degree incremental adjustability with 6-degree maximum advance/retard. The unique design yields precise camshaft timing and durability. It includes a Torrington roller thrust bearing for reduced friction and custom adjusting tool. The Ultimate Adjustable Billet Timing Set is perfect for all street performance and race applications. Ultimate adj. Timing Set, CS Raised CAM COMP Cams Ultimate Adjustable Billet Timing Set for Small Block Chevrolet Raised Cam COMP Cams Ultimate Adj. Timing Set CS R