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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.
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]
In the 1920s Oakland Motor Car engineers designed an all new engine for their "companion" make, the Pontiac, that was introduced in 1926.It was a side-valve design with a one piece cast iron block with three main bearings.
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
The 410 engine, used in 1966 and 1967 Mercurys (see Ford MEL engine regarding 1958 senior series Edsels), used the same 4.05 in (102.87 mm) bore as the 390 engine, but with the 428's 3.98 in (101.09 mm) stroke, giving a 410.1 cu in (6.7 L) real displacement. The standard 428 crankshaft was used, which meant that the 410, like the 428, used ...
Power was upgraded to 340 horsepower on the base 400 CI engine, up from 333 on the 1967 model year, the 428 CI engine remained an option In 1969, the rest of the Bonneville's styling was updated. The front fascia stayed similar to 68', however, the rest of the car saw a restyle.
Pages in category "Pontiac engines" The following 8 pages are in this category, out of 8 total. This list may not reflect recent changes. I. Iron Duke engine; O.
The Pontiac GTO is a front-engine, rear-drive, two-door, and four-passenger automobile manufactured and marketed by the Pontiac division of General Motors over four generations from 1963 until 1974 in the United States — with a fifth generation made by GM's Australian subsidiary, Holden, for the 2004 through 2006 model years.
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related to: 1969 pontiac sj 428 ho engine parts kit ebay