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The external dimensions of all their V8s, from 326–455 cu in (5.3–7.5 L) were the same. Engine displacement is a function of bore and stroke. Pontiac's V8s share the same 6.625 in (168.3 mm) connecting rod length, with the exceptions of the later short deck 301, 265, and 303 Ram Air V.
GMC replaced the Pontiac 223 with their own 228-cubic-inch (3.7 L) 228 in 1939. This OHV (overhead valve) engine was produced through 1953. With a cylinder bore of 3.5625 inches (90.49 mm), this is the smallest low-deck engine. All four low-deck engines have a stroke of 3.8125 inches (96.84 mm) and used 7 inch long connecting rods.
The Pontiac 301 Turbo is an engine that Pontiac produced for the 1980 and 1981 Trans Am. It was a V8 engine with a displacement of 301 cubic inch which produced an officially factory rated 210 hp (157 kW) and 345 lb⋅ft (468 N⋅m) of torque in 1980.
Sometimes confused with the Buick designed and built 215 cu in (3.5 L) aluminum V8 that Pontiac had used in the two years prior, the "Pontiac 215" was an adaptation of Chevrolet's 194 cu.in. inline 6 currently produced and the new 230 cu in (3.8 L) overhead valve Turbo-Thrift straight-6.
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 ...
The Turbo-Thrift 230 (also known as the High Torque 230 in Chevrolet trucks), with 230 cu in (3,768 cc) displacement, replaced the long-stroke 235 cu in (3.9 L) version of the Stovebolt six beginning in 1963. Bore and stroke were 3 + 7 ⁄ 8 in × 3 + 1 ⁄ 4 in (98 mm × 83 mm). It was also used by Chevrolet and GMC trucks, primarily for the ...
It shared the 5.125 in × 3.86 in (130.2 mm × 98.0 mm) bore and stroke and used a single camshaft. It was manufactured in gasoline and diesel versions, and was the largest-displacement production gasoline V8 ever made for highway trucks. The GMC 637 V8 was produced from 1965 to 1973. [1]
Engine displacement was a factor of the bore: the 250 cu in (4.1 L) has a 3 + 1 ⁄ 2-inch (88.9 mm) bore, 287 cu in (4.7 L) 3 + 3 ⁄ 4 inches (95.3 mm), and the 327 cu in (5.4 L) a 4-inch (101.6 mm) bore. A number indicating the bore size is cast on the top of the engine block's flywheel housing immediately behind the right bank cylinder head.