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The W72 offered many improvements over the standard L78 400 Pontiac. One of the key upgrades were the 6x4 heads. The standard head seen on an L78 400 Pontiac was the low compression 6x8 head, while the 6x4 head seen on the W72 had hardened valve seats for a higher RPM operating range, improved air flow, and higher compression.
This engine featured a conventional one piece cylinder head, and the distributor was moved to the side of the block. The number of main bearings was increased to four. Like the Pontiac Straight-8 engine it also featured full-pressure oiling and insert type precision main and rod bearings. These two latter features greatly increased longevity ...
A Silver streak 8 in a 1949 Pontiac Streamliner - note the large intake silencer leading to an oil-bath air cleaner on the left side of the engine. The Pontiac straight-8 engine is an inline eight-cylinder automobile engine produced by Pontiac from 1933 to 1954. Introduced in the fall of 1932 for the 1933 models, it was Pontiac's most powerful ...
Front head room was 36 inches, while rear head room was 35.75 inches. [6] In 1953, Pontiac came with a new body style, offering a 122 in (3,099 mm) wheelbase, and sleeker lines. The windshield was now one piece, and a panoramic rear window was standard. Pontiacs sported accentuated bubbled-up fins in the rear for the first time in 1953.
1905–1914 Cadillac Model D side-valve (acquired as part of the founding of GM); 1906–1923 Oldsmobile Model S side-valve (acquired as part of the founding of GM); 1906–1911 Buick Model D inline-4 [10] (T-head design, the only non-OHV Buick engine ever made) [11]
Pontiac produced cars offering 40 hp (30 kW; 41 PS), 186.7 cu in (3.1 L) (3.25x3.75 in, 82.5x95mm) L-head straight-six cylinder engines in the Pontiac Series 6-27 of 1927; its stroke was the shortest of any American car in the industry at the time. [2]
Full-size car Streamliner: 1941 1951 GM B platform: 2 Full-size car Chieftain: 1949 1958 GM A platform: 2 Full-size car Catalina: 1950 1981 GM B platform: 5 Entry-level full-size car Star Chief: 1954 1966 GM A platform GM B platform: 6 Full-size car, upper trim of Chieftain Safari: 1955 1957 GM A platform: 1 Full-size station wagon Bonneville ...
The Pontiac 6 was a more affordable version of its predecessor Oakland Six that was introduced in 1926, sold through Oakland Dealerships. [1] Pontiac was the first of General Motors companion make program where brands were introduced to fill in pricing gaps that had developed between Cadillac, Buick, Oldsmobile, Oakland and Chevrolet. The ...