2121 Magnum Double Roller Timing Setss

Dynamically balanced for smoother operation COMP Cams magnum double roller timing sets are built for maximum street performance. They have crank sprockets with three key ways for normal timing or 4° advance/retard. Heat-treated pre-stretched double-row chains provide extra strength and reliability. Features -Magnum double roller timing sets -Ideal for mild street performance applications -Induction-hardened cast iron camshaft gear and billet steel crank sprocket -Heavy-duty heat-treated true double roller timing chain -3-keyway crank sprocket for 4° incremental adjustability -Hardened cast iron -4 degree incremental adjusting -4 degree maximum advance for mild street performance uses -Engine make/size - Ford 351c ford 351m-400 -1970-82 ford v8 351c 351m 400m Fits applications -1970-1982 - Ford -1977-1979 - Lincoln -1970-1979 - Mercury