Why It Matters
The factory-installed 1962 Super Duty 421 combined a four-bolt block, forged rotating hardware, dual Carter AFBs, mechanical valve train, and 405-hp rating for competition use.
Also Known As
1962 SD-421 engine1962 Pontiac 405-hp 421
Part profile
1962 Pontiac Super Duty 421 engine assembly
engine part · Pontiac
Used On
1 linked car page.
Series 23 two-door sedan (2311) or hardtop Sport Coupe (2347)
1962 Pontiac Catalina Super Duty 421
Factory-installed special-order competition package