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The Chevrolet big-block engine is a series of large-displacement, naturally-aspirated, 90°, overhead valve, gasoline-powered, V8 engines that was developed and have been produced by the Chevrolet Division of General Motors from the late 1950s until present. They have powered countless General Motors products, not just Chevrolets, and have been ...
The big-block engines initially used a forged crankshaft with a stroke of 3.975" for the 1965-1967 425 and 400 CID versions; starting in 1968, both the 400 cu in (6.6 L) and the 455 cu in (7.5 L) big blocks used a stroke of 4.25 in (108 mm), with crankshaft material changed to cast iron except in a few rare cases.
This was so named because it began with Chevrolet's V8 engines. Chevrolet big-block V8s; Chevrolet small-block V8s; GM Vortec 4300 90° V6; GM Iron Duke RWD inline 4 (early RWD Variants, later versions may use a FWD pattern, and have two possible starter locations) Jeep with GM Iron Duke inline 4 2.5L/151 in 3 (1980-1983).
Engine offerings included the 110 hp (82 kW) 250-6, a 307 V8, a 175 hp (130 kW) 350-cubic-inch V8, and big block V8s of 402 and 454 cubic-inch displacements. The 402-cubic-inch (still known as a 396) produced 240 hp (179 kW); the 454 managed to put out 270 hp (201 kW) under the net rating system.
5. 1970 Chevrolet Chevelle SS 454 LS6 – $1.2 Million ... boasts a 454 cubic-inch block, making it a high-performance powerhouse. ... and just 17 had the powerful 370-hp Ram Air IV V8 engine. 7 ...
The 265 cu in (4.3 L) "Turbo-Fire" V8 was the second Chevrolet small-block; the first Chevrolet V8 was produced in 1917. The 265 cu in Turbo Fire engine was designed by Ed Cole 's group at Chevrolet to provide a more powerful engine for the 1955 Corvette than the model's original " Blue Flame" in-line six , the 162 hp (121 kW) 2-barrel debut ...