COMP Cams Timing Chain Chevy SBReplacement Timing Chain for 3100, 3120, 3131, 3135, 3136, 3138, 7100, 7100 5, 7100 10, 7136, 7138, 7138 5, 7138 10, 8100, 8131, & 8138 Hi Tech Roller Race, Hi Tech Keyway Adjustable & Ultimate Adjustable Timing SetsThis Part Fits: Year Make Model Submodel 1980 Buick Century Base 1980 Buick Century Estate 1980 Buick Century Limited 1980 Buick Regal Base 1980 Buick Regal Limited 1987 1992 Chevrolet Astro Base 1987 1992 Chevrolet Astro CL 1987 1992