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The 303-cubic-inch (5.0 L) engine had hydraulic lifters, an oversquare bore:stroke ratio, a counterweighted forged crankshaft, aluminum pistons, floating wristpins, and a dual-plane intake manifold. The 303 was produced from 1949-1953. Bore was 3.75 in (95 mm) and stroke was 3.4375 in (87.31 mm).
GM experimented with aluminum engines starting in the early 1950s, when Aluminum Company of America (ALCOA) was pushing all automakers to use more aluminum. An early-development supercharged version of the 215-cubic-inch (3.5 L) V8 was used in the 1951 Le Sabre concept car, [23] and the 1953 Buick Roadmaster concept car.
The 1964 Buick iron-block 4.9 L (300 cu in) engine had aluminium cylinder heads, 3.75 bore and a longer 3.4" stroke crankshaft, which with modification can be used with the Buick 215 or Rover engine blocks to produce a high-output, very light weight V8 with displacement of up to about 4.9 L (300 cu in). The 300 crank, after machining the mains ...
A 400 cubic inch ram air equipped V8, it was an option on the 1969-70 GTO and Firebird Formula. ... forged aluminum 4.09-inch (104 mm) ... Engine weight: estimated ...
Chrysler displayed a larger and more powerful 392-cubic-inch (6.4 L) HEMI in 2005 with a factory-rated output of 525 hp (391 kW; 532 PS) and 510 lb⋅ft (691 N⋅m) torque. It is equipped with high-strength forged aluminum alloy pistons. This engine has been available since 2007, as a crate engine under the name 392 HEMI. [28]
The ZZ632's iron block shares a mold with Chevrolet Performance's ZZ572 crate engines, but the castings are machined to accommodate the huge 632 cubic-inch displacement. The bore grows by 0.040 in (1.0 mm), compared to the 572-cubic-inch V8s, with most of the displacement gain coming from a stroke that is 0.375 in (9.5 mm) longer.
Also in 1965, Ford and Carroll Shelby began production of a new and improved Cobra using a 427 cubic inches (7 L) FE side-oiler in place of the original's 289 cu in (4.7 L) Windsor small-block. A new chassis was built enlarging 3" main tubing to 4", with coil springs all around. The new car also had wide fenders and a larger radiator opening.
The revised engine was 52 lb (24 kg) lighter than its predecessor, for a total dry weight of 595 lb (270 kg). The revised engine shared the same 4 in × 3.875 in (101.6 mm × 98.4 mm) bore and stroke of its predecessor, for an unchanged displacement of 390 cu in (6.4 L).