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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 Chrysler B and RB engines are a series of big-block V8 gasoline engines introduced in 1958 to replace the Chrysler FirePower (first generation Hemi) engines. The B and RB engines are often referred to as "wedge" engines because they use wedge-shaped combustion chambers; this differentiates them from Chrysler's 426 Hemi big block engines that are typically referred to as "Hemi" or "426 Hemi ...
The Ford 385 engine family (also called "Lima" [2]) is a series of "big block" overhead valve (OHV) V8 engines designed and manufactured by Ford Motor Company. The family derives its 385 name from the 3.85-inch (98 mm) stroke of the 460 cubic-inch V8 introduced in 1968. [ 3 ]
The classification of 'big-block' or 'small-block' refers to the engine's external dimensions and does not necessarily indicate the actual engine displacement. Engines with displacements from 6.0 to 6.6 L (366 to 403 cu in) have been classified as both small-block and big-block, depending on the particular manufacturer's range of engines.
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).
The Ford MEL is a big-block 90° V8 engine family produced in various configurations by the Ford Motor Company between 1958 and 1967 in displacements from 383–462 cubic inches (6.3–7.6 L), and used in Ford, Edsel, Mercury, and Lincoln vehicles.
The Buick V8 family can be divided into two sizes, big-blocks and small-blocks (block size classification refers to the engine block's bore spacing and external dimensions, not displacement). All 1953–1966 Buick V8s and the 1967–1976 "big-block" engines shared a 4.75 in (121 mm) bore spacing. The small-block was produced from 1961 to 1981.
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.