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The 322 Fireball V8 in a 1956 Buick Century. Buick's first generation V8 was offered from 1953 through 1956; it replaced the Buick straight-eight.While officially called the "Fireball V8" [1] by Buick, it became known by enthusiasts as the "Nailhead" for the unusual vertical alignment of its small-sized valves (Originally it was known to hot-rodders as the "nail valve", because the engine's ...
Buick Nailhead V8 The Buick straight-8 engine ( Fireball 8 ) was a straight-eight cylinder automobile engine produced from 1931 to 1953 by the Buick division of General Motors . It replaced the Buick Straight-6 engine across the board in all models on its debut.
The Buick V8 engine, nicknamed the Nailhead because of its relatively small intake and exhaust valves which resembled nails, [citation needed] became popular with hot-rodders in the 1950s and 1960s because the vertical attachment of the valve covers, in contrast to the angled attachment of other V8 engines, enabled the engine to fit into ...
1949–1990 Oldsmobile Rocket V8; 1953–1976 Buick Fireball V8 (also referred to as "Nailhead") & Buick Big-Block V8; 1955–2003 Chevrolet Small-Block V8 "Generation I" (originally "Turbo-Fire") 1955–1980 Pontiac V8 (also modified for GMC Truck models) 1958–1965 Chevrolet W (also referred to as "Turbo-Thrust")
1965 Buick Gran Sport. The 1965 Skylark Gran Sport was the intermediate Buick Skylark with the Gran Sport option added. Although a 300 cubic inches (4.9 litres) V8 was already offered in the Skylark, the Gran Sport had the largest engine permitted by GM - a 401 cubic inches (6.6 litres) Buick V8 (called a 400 by Buick because that was the maximum engine size allowed in intermediate body cars).
1953-56 Nailheads have a unique round-shaped bellhousing that looks almost the same as bells for the later 1957-66 Nailhead, but in fact the circular flange is about 1" larger. [ 1 ] [ 2 ] Buick Nailhead, Generation 2 pattern
The Buick Invicta is a full-size automobile produced by Buick from 1959 to 1963. [1] The Invicta was a continuation of the mid-range Buick Century that mated the standard size Buick LeSabre (pre-1959, Buick Special ) body with Buick's larger 401 cubic inch Fireball V8 engine.
An optional Buick 215 cu in (3.5 L) V8, was not popular when it was available for 1961 and 1962 in the Tempest. For 1963, Pontiac replaced it with a new "326" that was actually 336 cu in (5.5 L) V8 with a bore of 3.78 and stroke of 3.75 (same stroke as the 389). It was based and shared parts with the 389, but an altered, reduced bore.