Like the 350, the Oldsmobile 403 V8 is a small block engine, but with a larger bore of 4.351 inches. It produced 185 ...

The last and largest engine for the 1977 Pontiac Firebird is the Oldsmobile 403 V8, which basically has the same structure as the previously mentioned Oldsmobile 350 V8 engine, but the main ...

like most V8 engines of the era, the 455 V8’s performance dwindled over the years as more stringent emissions requirements became established. While Oldsmobile became overshadowed by other GM ...