However, how many wagons have you seen coming from the factory with the most powerful engine available? Enter Pontiac’s Bonneville Safari 421 Tri-Power High-Output of 1965. 1965 was the year ...

Pontiac Forced To Offer 421 SD V8 For The Road While the engine was powerful enough to take ... while even the HO unit could ...

The 326 was the inaugural base engine for the Pontiac Firebird's debut, supplying it with 250 horsepower, which was impressive at the time. The 421 would become renowned after being used by Joe ...

In 1961, Pontiac did a number ... from body panels to engine. Photo: YouTube/Lou Costabile The original block was long lost, so a correct Super-Duty 421 block with high-nickel content was put ...