The top dogs were the400 cid V8s, with the W66 and L67 engine codes. The W66 had a 10.75:1 compression ratio, five main bearings, and a Rochester QuadraJet to make 325 horsepower. The L67 made the same power, but had a Ram Air package that made the hood scoops functional, used a ...
The particles from the damaged nylon gear can also enter the 389’s engine oil. That could lead to a blocked fuel pump later down the line. That can starve the Pontiac V8 of oil, ultimately resulting in a seized engine and destroyed rod bearings. This issue is not present on 1964+ engi...
The new version was just as thoroughly re-engineered as the 303, but with a very different set of design priorities. Where the Ram Air V had a reinforced block, massive ports, and a hefty forged crankshaft with four-bolt main bearings, the new engine had thinner cylinder walls and internal...
A strong oversquare design with five main bearings, the Strato-Streak was somewhat related to Chevy's all-new 1955 "Turbo-Fire" V-8. Though not quite as advanced, it would serve Pontiac admirably for more than a quarter-century. As on other '55 GM cars, Pontiac styling was rather boxy...