Include induction hardened steel billet gears for bullet proof durability Feature infinitely adjustable camshaft sprocket, 6-degree maximum advance/retard 3 keyway crank sprocket for additional 4-degree incremental adjustability Pre-stretched, heat-treated single row chain with heavy-duty large pin design; chain available separately Torrington roller trust bearing reduces friction Ideal for all street performance and race applicationsNOTE: Can NOT be used with the factory fuel injection.Vehicle Fitments: Year Make Model Submodel 2002 - 2003 Chevrolet Avalanche 2500 Base 1996 - 1999 Chevrolet C2500 Base 1999 Chevrolet C2500 LS 1996 - 1998 Chevrolet C2500 Silverado, Cheyenne 1998 Chevrolet C2500 WT 1996 - 1999 Chevrolet C2500 Suburban LS, Base 1996 - 1997 Chevrolet C2500 Suburban LT 1996 - 1999 Chevrolet C3500 Base 1999 Chevrolet C3500 LS 1996 - 1998 Chevrolet C3500 Silverado, Cheyenne 1996 - 2002 Chevrolet Express 3500 Base, LS 1996 - 1999 Chevrolet K2500 Base 1996 - 1998 Chevrolet K2500 Cheyenne, Silverado 1999 Chevrolet K2500 LS 1998 Chevrolet K2500 WT 1996 - 1999 Chevrolet K2500 Suburban LS, Base 1996 - 1997 Chevrolet K2500 Suburban LT 1996 - 1999 Chevrolet K3500 Base 1999 Chevrolet K3500 LS 1996 - 1998 Chevrolet K3500 Silverado, Cheyenne 2001 - 2002 Chevrolet Silverado 2500 HD LS, LT, Base 2001 - 2002 Chevrolet Silverado 3500 LS, Base, LT 2001 Chevrolet Suburban 2500 Base 2001 - 2002 Chevrolet Suburban 2500 LT, LS