![]() The engine displacement was limited to 305c.i. This particular engine was designed for Z/28 Camaro to comply with the Sports Car Club of America ( SCCA) Trans-Am Series regulations. ![]() Read more: SBC Head Casting Numbers: Full List & Lookup 302c.i. The 307 used 3.875-inch cylinder bores, a 327 crankshaft with 3.25-inch arms, and 5.7-inch rods. However, due to the emission regulations of 1972, it de-rated to 115 HP. Upon its introduction, the 307 featured 200 HP at 4600 RPM and 300 lb.-ft of torque. It was the smallest small-block Chevy until the 305 replaced it in 1973. However, it was still essentially a 283 but with rods and crankshaft from a 327. engine started production in 1968 to replace the 283. The horsepower went up a bit every year, allowing the engine to be available for Corvette and Checker Taxis. The 283 V-8 was a passenger car option, and it could make 1 HP per cubic inch in ’57 owing to Rochester fuel injection and a “Duntov” camshaft.Īll 283 versions had horsepower between 188 HP and 283 HP. This engine has five different versions, produced between 19. The first 283 small-block Chevy engines used 265 blocks, but future ones have 3.876 bores. (4.6L, 3.876 In x 3.00 In) 283 small-block Chevy engines could make 1 HP per cubic inch in ’57 owing to Rochester fuel injection and a “Duntov” camshaft. ![]() The 265’s production ended in 1956, paving the way for the 283.Ī video about 265 – The original small block Chevy. In 1956, you could get the engine in three versions: single, four-barrel carburetor 210 HP, twin, four-barrels, 225 HP, and two four-barrel carburetors and high-lift camshaft, 240 HP. Trucks using this engine would have iron blocks with thicker cylinder walls, allowing for 1.125-inch (1/8-inch) boring for 283-CID. Since the 265 was a pushrod engine featuring hydraulic lifters, it was available with a four-barrel Rochester carburetor (optional) to increase horsepower to 180 HP (134kW) or 195 HP (145kW) in the Corvette. ![]() The 265 Turbo Fire features the same 4.4-inch bore spacing and 90-degree design as the original 265 of 1917, and GM used its early model manual transmission/two-barrel orders. It was made in 1955 for over 50% of all Chevys sold. Download the full comparison chart here 265 Turbo Fire V8 (4.3L, 3.75 In × 3.00 In)Ģ63 Turbo Fire V8 started the small-block revolution. ![]()
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