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The Grand Prix was an all-new model for Pontiac in the 1962 model year as a performance-oriented personal luxury car. [3] Based on the Pontiac Catalina two-door hardtop, Pontiac included unique interior trim with bucket seats and a center console in the front to make the new model a lower-priced entry in the growing personal-luxury segment. [3]
A 390 hp 428 V8 in a 1969 Grand Prix SJ. In 1967 the 421 was enlarged to 426.61 cu in (7.0 L) by increasing its bore to 4.12 in (104.6 mm). Both Chevy and Ford had 427 cu in performance engines, so Pontiac simply referred to its 427 as a 428 to one-up them. It retained the 421's 4 in (101.6 mm) stroke and 3 + 1 ⁄ 4 in (82.6 mm) main journal.
English: 1969 Pontiac Grand Prix SJ being loaded after the 2023 Greenwich Concours d'Elegance. 390 horsepower (engine code WL), manual transmission. Date: 4 June 2023:
Pontiac Grand Prix X-400 (1962–1963) Pontiac Grand Prix SJ Edinburgh (1972) Pontiac Grand Prix Landau (1979) Pontiac Maharani (1963) Pontiac Montana Thunder (1998) Pontiac Monte Carlo (1962) Pontiac Proto Sport 4 (1991) Pontiac Piranha (2000) Pontiac Pursuit (1987) Pontiac Rageous (1997) Pontiac REV (2001) Pontiac Salsa (1992) Pontiac Sunfire ...
1968 and 1969 400s shared the Olds big-block standard 4.25 in (107.95 mm) stroke with the 455 but used a undersquare 3.87 in (98.30 mm) bore to comply with GM's maximum 400 cu. in. displacement restrictions in the A-body cars while also reducing tooling costs. Displacement is similar to the earlier engine, at 399.9 cu in (6,554 cc).
The Ventura SJ was marketed as an American rendition of a Euro-style luxury sport sedan that Pontiac created with the larger mid-sized Grand Prix in 1973, as well as a competitor to the new-for-1975 Ford Granada and Mercury Monarch, both marketed as luxury compacts designed to compete with the more expensive imports such as Audi and Mercedes ...
The G-body designation was originally used for the 1969–1972 Pontiac Grand Prix and 1970–1972 Chevrolet Monte Carlo personal luxury cars, which rode on longer wheelbases than A-body coupes. For 1973, the Grand Prix and Monte Carlo were related to the A-body line, with all formal-roof A-body coupes designated as A-Special (and, after 1982, G ...
This engine was used in the 1970 AMX as the base engine and also in the 1970 Rebel, the 1971 through 1978 Matador, Jeep J-series trucks from 1970 until 1987, Wagoneer (SJ) models from 1972 until 1984, Cherokee (SJ) from 1974 until 1983, as well as in the full-sized Grand Wagoneer from 1984 through 1991 - becoming one of the last carbureted ...