Here's What Made The Pontiac 421 Super Duty Big Block Engine So Impressive
The 421 engine is available only with ... and the newly introduced Dodge 413 Max Wedge. At the time, Pontiac's largest engine ...
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The Biggest Displacement Engine Ever In A Pontiac Car
Pontiac's 455 ci V8 engine was its largest ever, ideal for muscle cars in the 1970s for torque and lower emissions. The 421 ...
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Gearhead Missed Out on a GTO by a Day, so He Got a 1965 Catalina 2+2 421 Tri-Power Instead
That was in 1964, and the GTO performance package for the Pontiac LeMans gave others an idea. But Pontiac wasn’t sleeping on ...
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8 Of The Best Engines To Ever Power A Pontiac Muscle Car
A new V8 landed in 1963, but this one didn't increase the ... engine for the Pontiac Firebird's debut, supplying it with 250 horsepower, which was impressive at the time. The 421 would become ...
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1963 Pontiac Grand Prix Parked for 40 Years Emerges With Rare Engine
Powered by V8 engines ... Pontiac also offered a High-Output (HO) Tri-Power variant that was good for 370 horsepower. This one features the 350-horsepower version, the second-rarest 421 V8 option ...