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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 ...
1990 454 SS. For 1990, Chevrolet debuted the 454 SS as a high-performance variant of the C1500. The newest American high-performance pickup truck since the 1989 Shelby Dakota, the 454 SS was a 1 ⁄ 2-ton C1500 powered by a 230 hp (172 kW) 7.4 L V8.
The gasoline engines that were offered in the medium-duty trucks were the Chevrolet 250 and 292 inline-sixes alongside the 350 small-block V8 and the 366, 427, and 454 big-block V8s. A very rare option was GMC's DH478 "ToroFlow" 478-cubic-inch diesel V6, which was offered only in 1973.
The model line was launched with a 261 cubic-inch inline-six (derived from the Chevrolet "Stovebolt" engine); this engine was replaced in 1971 by a 250 cubic-inch inline-6 from the Chevrolet Opala. [4] In 1976, the standard gasoline engine for the C-10 became a 2.5L inline-four. [4]
GMC additionally offered divisionally-produced V6 engines for its C/K trucks (305 and 351 cubic inches) alongside the four Chevrolet engines. [13] For 1968, Chevrolet enlarged the 283 V8 to 307 cubic inches. A 396 cubic-inch V8 became an option (the first time a large-block V8 was offered in a light-duty GM truck). [14] For 1969, Chevrolet ...
The top engine was a new 454 cu in (7.4 L) Turbo Jet V8 offered in 345 hp (257 kW) or 390 hp (291 kW) versions. Both the 250- and 265 hp (198 kW) Turbo Fire engines were designed to use regular gasoline while the 300 hp (220 kW) 350 Turbo Fire and both 454 Turbo Jet engines required premium fuel.
Chevrolet's largest and most-powerful engine of the time was also put into a select few El Caminos. The LS6 454 CID engine, rated at 450 hp (336 kW) and 500 lb⋅ft (678 N⋅m) of torque, gave the El Camino 1/4-mile times in the upper 13-second range at around 106 mph (171 km/h). [citation needed]
Chevrolet Performance released the 454 again in 2011 as a small-block crate engine dubbed the LSX454R officially rated at 776 horsepower at 7,000 rpm and 649 lb-ft of torque at 5,100 rpm. The LSX454R was discontinued in July 2018 and was recorded as one of the more powerful LS crate engines to be assembled from Chevy Performance.