lengthened to to achieve a to create the Rocket 455 for 1968. It kept the retired 425's bore to produce between . Initially the paint was red, except for metallic blue in the Toronado applications; 1970-1976 versions were metallic blue at first, then nonmetallic blue. The "Rocket" name disappeared from the air cleaner identification decal after 1974. Although production of the 455 ended in 1976, a small number were produced through 1978 for power equipment use, such as motorhomes, boats and irrigation equipment. Applications: Oldsmobile Cutlass Oldsmobile Vista Cruiser (1970–76) Oldsmobile Custom Cruiser Oldsmobile 4-4-2 Oldsmobile Hurst/Olds, Oldsmobile 88 Oldsmobile 98 1968–1970 Oldsmobile Toronado, 1968–1970 Oldsmobile Toronado GT (W34), 1973–1976 GMC Motorhome 350 Produced from 1968–1980, the Rocket 350 was entirely different from the other GM divisions' 350s. It used a very oversquare bore and Oldsmobile small-block standard stroke for . Output ranged from 160-325 hp (119-242 kW). 1968-1974 350s were painted gold; 1975-1976 350s were metallic blue like the 455; 1977-1980 models were painted GM Corporate Blue. The "Rocket" name disappeared from the air cleaner decal in 1975, the same year that the catalytic converter was added to the emissions control system. The Oldsmobile 350s made from 1968-1976 have heavy castings, beefier crankshafts, and better flowing heads. The 1977-1980 350s have lighter castings, including a thinner block with large "windows" in the main bearing bulkheads, and have crack-prone cylinder head castings manufactured by Pontiac Motor Division (castings are marked "PMD"; these heads were also used on the 260), and a lightened crankshaft.. The 1976-1979 Cadillac Seville was equipped with a version of this engine featuring an analog Bendix/Bosch electronic port fuel injection system, making this the first American mass-produced car with EFI as standard equipment. Applications: 1976-1979 Cadillac Seville 1980 Cadillac Seville 1979 Cadillac Eldorado 1968-1977 Oldsmobile Cutlass 1968–1977 Oldsmobile Vista Cruiser 1973-1977 Oldsmobile 4-4-2 1968-1980 Oldsmobile Delta 88 1977-1980 Oldsmobile 98 1979-1981 Oldsmobile Toronado 1973-1979 Oldsmobile Omega L34 Oldsmobile's own L34 V8 was used in the 1976 Oldsmobile Cutlass "S", 1979 Hurst/Olds models and 1980 "4-4-2". The L34 used a 4-barrel carburetor and produced and . 403 The 455 big block Olds V8 was replaced in 1977 with the small block, which used a bore, the largest ever used in a small-block V8, with the Olds small-block standard deck and stroke. The bore was so wide that the cylinder walls were siamesed, as in the Chevrolet 400 V8,