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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 ...
The 455 was the standard engine on the Electra, but there were some built with Buick 350s during the GM strike, when 455 production halted. The 350 engine also came with a price rebate. The 455 engine disappeared after the 1976 model year, in favor of smaller, more efficient engines.
The 1971 Centurion produced 315 hp (235 kW) at 4400 rpm and 510 lb⋅ft (690 N⋅m) of torque at 2800 rpm with the base 455. The Centurion was also offered in the 455 Stage 1 and manual transmission configuration as well during the early portion of the 1971 model year, shared with the Buick GSX. This was known as the A9 and B6 Option when ...
The LeSabre 455 model line was dropped for 1971 with the larger engine now being offered as an option on the regular base and Custom-series models. LeSabre Customs equipped with the optional 455 engine got a "455" badge underneath the LeSabre nameplates on the front fenders instead of the "Custom" badge normally used. [2]
The engine was upgraded to 455 cu in (7.5 L), the largest engine Buick offered to date, rated at 370 hp (276 kW) gross, 245 hp (183 kW) net, and over 500 lb⋅ft (680 N⋅m) of torque. 1970 sales were 37,366, the second-generation Riviera proved more successful than the first, with 227,669 units sold over five the years.
The engine was available in all full-size Pontiacs. An HO version could be ordered in the GTO, as GM had lifted its restrictions on offering engines larger than 400 cu in (6.6 L) in mid-sized cars (resulting in the 454 (7.44) Chevrolet Chevelle, 455 (7.5) Buick Gran Sport, and 455 (7.5) Oldsmobile 442).
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