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An even more powerful version, producing 465 hp (347 kW) and 610 lb⋅ft (827 N⋅m), of the 454, then dubbed LS-7 (not to be confused with the modern, mid 2000s, 7-litre Chevrolet Corvette engine that powered the C6 Z06, which is an LS7). Several LS-7 intake manifolds were individually produced and sold to the general public by a few Chevrolet ...
The metric 200 three-speed automatic transmission became standard on all models and a new Chevrolet-built 229 cu in (3.8 L) V6 with 2-barrel Rochester carburetor replaced both the 200 cu in (3.3 L) V6 of 1979 and the Buick engine offered on all 1978 models and the 1979 Landau as the standard engine in 49 states (California cars continued to use ...
Borrowed directly from the R/V and C/K 3500-series trucks, the 230 hp (172 kW) 7.4 L V8 was mated to a 3-speed THM400 for 1990. For 1991, the 454 SS underwent a series of upgrades, centered around an increase of engine output to 255 hp (190 kW) and the introduction of the 4-speed 4L80E overdrive transmission. [18]
Power and performance were reduced. Engine offerings for 1971 included the 250-6, small-block V8s of 307 and 350 cubic inches; and big block V8s of 402 and 454-cubic-inch displacements. Horsepower ratings of those engines for 1971 ranged from 145 for the six to 365 for the RPO LS5 454 – all in gross figures. The LS6 454 V8 was gone forever.
The engine line-up remained unchanged, although the 3.8 L 229 cu in V6 was now rated at 110 hp (82 kW) and the 5.0 L 305 cu in V8 was rated at 150 hp (112 kW). All engines were updated with the Computer Command Control (CCC) system which included an electronically metered carburetor. This change occurred in 1980 for California emission cars and ...
The 400 and 454 engines were optional. The 454 was available with GM's THM-400 automatic or Muncie 4-speed manual transmission. Unitized 3-point seat belts were introduced on all Chevrolet models. 1974 Chevelle Malibu Estate. The upscale luxury trim level for 1974 was the new Malibu Classic, offered in sedan, coupe, and station wagon models.