Horsepower for the 1962 Pontiac Bonneville varied by engine and option package; most configurations placed the standard V8 in the low-to-mid 300s, with larger V8s delivering higher figures depending on induction and exhaust setups.
Context: The Bonneville lineup in 1962
The 1962 Bonneville was Pontiac’s flagship full-size car, offered with multiple V8 engine choices. Ratings from that era used SAE gross horsepower, which can differ from modern net ratings, so figures published then often appear higher than contemporary figures for the same engine configuration.
Engine options and horsepower ranges
This section lists typical horsepower ranges by engine family for the 62 Bonneville. Note that exact numbers vary by carburetion, exhaust, and drivetrain choices.
- 389 cu in V8 with a two-barrel carburetor — commonly cited in the low-to-mid 300s horsepower.
- 389 cu in V8 with a four-barrel carburetor — higher in the mid-300s horsepower, often around the 325 hp figure in contemporary reports.
- 389 cu in V8 with multiple-carb setups (e.g., Tri-Power) — horsepower in the upper 300s, depending on induction and exhaust configuration.
- 421 cu in V8 with four-barrel carburetion — upper 300s horsepower, varying with induction and equipment; this larger engine offered the most power in the 1962 lineup.
Conclusion for the list: The 1962 Bonneville’s horsepower was not a single fixed number. It depended on which V8 engine and how it was equipped, with base configurations in the low-to-mid 300s and larger or more highly tuned setups reaching into the upper 300s.
Notes on horsepower ratings
Publishers in the early 1960s used SAE gross horsepower ratings, which generally yielded higher numbers than later SAE net ratings. When comparing the 1962 Bonneville’s horsepower to modern figures, consider the rating method and the exact engine configuration.
Practical implications for enthusiasts and collectors
For collectors and historians, the horsepower specification helps identify the exact engine and option combination in a given car. The Bonneville’s appeal in that era rested as much on luxury and presence as on horsepower, and buyers often weighed performance against ride quality and features.
Summary
In the 1962 Pontiac Bonneville, horsepower varied by engine and configuration. The lineup included a 389 cu in V8 (with two-barrel, four-barrel, or multi-carb setups) in the approximate low-to-mid 300s, and a larger 421 cu in V8 typically delivering upper-300s horsepower. Exact figures depend on carburetion, exhaust, and other options, with older SAE gross ratings informing the higher numbers seen in period literature.