it "sounds and performs exactly like the aluminum V8 in most respects." 225 The bore was increased to , and stroke increased to , increasing displacement to . Since the engine was similar to the popular small-block Buick V8 — now with a cast-iron block and displacement of , the engine was made cheaply at the same factory with much of the same tooling. This engine was used in Buick's intermediate-sized Special and Skylark models from 1964 to 1967 and Oldsmobile's mid-sized F-85/Cutlass models for 1964 and 1965, including the Oldsmobile Vista Cruiser and Buick Sport Wagon. 1964-1965 models featured a single barrel Rochester MonoJet, producing . In 1966-1967, the 1-barrel was replaced with a 2-barrel Rochester 2GV, giving the engine a 5-horsepower boost to . The V6 was dropped after the 1967 model year in favor of a conventional inline-six engine built by the Chevrolet division, and the tooling was sold to Kaiser-Jeep. Dauntless In 1965, Kaiser-Jeep began using the Buick 225 in Jeep CJs. It was known as the Dauntless V6 and used a much heavier flywheel than the Buick version to damp vibrations resulting from the engine's firing pattern. Buick sold the tooling for this engine to Kaiser in 1967, as the demand for the engine was waning steadily in an era of V8s and muscle cars. When American Motors (AMC) bought Jeep, the V6 was replaced with AMC Straight-6 engines, but the ownership of the V6 tooling remained with AMC. Applications: 1966–1971 Jeep Jeepster & Jeepster Commando 1966–1971 CJ-5 1966–1971 CJ-6 231 The 1973 oil crisis prompted GM to look for more economical engines than the V8s of 350, 400 and 454/455 cubic inches that powered most General Motors cars and trucks during that time. At that time, the only "small" engines generally offered by GM were built by the Chevrolet division including the OHC aluminum inline-four engine used in the subcompact Chevy Vega and a straight-6 used in smaller Chevy, Buick, Oldsmobile and Pontiac models, whose design roots dated back to the 1962 Chevy II (Nova). One quick idea was tried by Buick engineers — taking an old Fireball V6 picked up at a junkyard and installing it into a 1974 Buick Apollo. The solution worked so well that GM wanted AMC to put the engine back into production. However, AMC's cost per unit was deemed as too high. Instead of buying completed engines, GM