5.7L (350 CU IN) V8 GM 260 (4 BBL.) GM 350 V-8

260 (4 BBL.) GM 350 V-8 1978-1982 4908850 THRU 6218461

260 (4 BBL.) GM 350 V-8 1982-1986 6218462 THRU 0B525981

260 (4 BBL.) GM 350 V-8 1987 0B525982 THRU 0B773739