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Hewing to GM's standing edict limiting engine size to 400 cu in for its midsize and smaller cars, the 360 hp (268 kW) (underrated), [citation needed] the 400 cubic inch Ram Air V-8 was the most powerful and advanced option available in the 1967 GTO and Firebird. Its cast "670" heads had taller valve spring heights than the standard D-port heads ...
The shakers had a "6.6 Litre" decal for all L78 Pontiac 400 and L80 Oldsmobile 403 engines. Only the optional W72 Pontiac 400 received the "T/A 6.6" decal. [39] As Pontiac had discontinued the 455 in the previous model year, a modified 400 Pontiac V8 dubbed the "T/A 6.6" with the RPO W72 became available as a pay-extra upgrade to the standard ...
Power was increased to 215 hp (160 kW; 218 PS) in 1967. Like other Pontiac engines of the era, the OHC 6 was not available in Canada with the exception of the Sprint version of the Firebird. Canadian-market Pontiac automobiles were equipped with the Chevrolet OHV six.
A new engine replaced the 326. This new engine was based on all existing Pontiac engine architecture and used the 389, 400, and 326 engines' crank at 3.75" stroke, and expanding the 326's 3.72" bore to 3.875" to give 353.8 cubic inches. It was marketed by Pontiac as a 350.
The Pontiac Executive is an automobile model that was produced by Pontiac from 1967 to 1970. [ 1 ] The Executive name replaced Pontiac's long running mid-range Star Chief , beginning for 1966 when all Pontiacs in this range were named Star Chief Executive for this one year only, before the series became simply the Executive for 1967.
The 400 cu in (6.6 L) version was the second, tall-deck "big-block" Olds. Two distinct versions of the 400 CID engine were made: 1965-1967 "Early" 400s used a slightly oversquare 4.000 in (101.60 mm) bore and 3.975 in (100.97 mm) stroke for an overall displacement of 399.6 cu in (6,549 cc). All the pre-1968 engines used a forged steel crankshaft.
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The Catalina continued as Pontiac's entry-level full-size automobile with a Buick-built 231 cubic-inch V6 now standard in sedans and coupes (Safari wagons came standard with V8 power) and optional V8s of 301 CID, 350 CID and 400 CID displacements, each Pontiac-built engines and offered in all states except California. The Pontiac 350 was ...