Story
1962 Pontiac Catalina Super Duty 421
For 1962, Pontiac moved the Super Duty 421 from a post-delivery parts program to a factory-installed competition package. The reviewed NHRA sheet limits the Catalina application to two Series 23 bodies: the 2311 two-door sedan and the 2347 hardtop Sport Coupe. That factory boundary is the first authentication check, because other 1962 Catalinas can share much of the same sheet metal and trim.
The 421 was rated at 405 horsepower at 5,600 rpm with 11.0:1 compression and two Carter AFB four-barrels, numbered 3433S and 3435S, on an aluminum runner manifold. The competition assembly used a four-bolt block, forged crankshaft, special rods and pistons, mechanical valve train, 1.65:1 rocker arms, dual-breaker ignition, and low-restriction exhaust. Early 540306 cylinder heads gave way to revised 544127 castings with larger valves. Reviewed references disagree on cam lift and cite either 425 or 430 lb-ft of torque, so those values remain source-specific here.
A Borg-Warner four-speed with Hurst-Campbell floor linkage carried power to Pontiac's 9.3-inch rear axle. Safe-T-Track and performance gearing were available; a period Motor Trend test car used a 4.30 ratio, but that test-car specification should not be projected onto every production car. The Catalina chassis retained independent front suspension, a four-link coil-spring rear suspension, and 11-inch drum brakes. Heavy-duty springs, power assist, and aluminum eight-lug hubs and drums were available.
The package's most visible competition feature was lightweight body equipment. Pontiac's period NHRA sheet lists aluminum hood, fender, bumper, and related components for the eligible Super Duty Catalina bodies. Surviving cars and restorations do not all present the same component history, so the exact panel combination must come from the car's paperwork, materials, fasteners, dates, and period photographs rather than appearance alone.
Reviewed history cites 155 Super Duty Catalinas, separate from 16 Grand Prix examples. The surviving Catalina count is not broken down by body style or equipment in the reviewed records. Base prices were $2,725 for the two-door sedan and $2,860 for the Sport Coupe, while the Super Duty option itself was listed at $2,250.
Authentication starts with PHS billing history or equivalent factory paperwork, then checks the 2311 or 2347 body identity, engine assembly, heads, dual-Carter induction, four-speed, axle, lightweight components, paint, trim, and dates as one coherent car. A later 421, dual quads, aluminum panels, race lettering, or eight-lug drums can create a convincing tribute without proving factory Super Duty production.