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In response to increasing sales of Pontiac's Trans Am, which sold over 46,000 units in 1976 and accounted for half of all Firebird sales, the Z28 was reintroduced as its own model in the spring of 1977 (as a 1977½). The revived Z28 was powered by a 350 cu in (5.7 L) LM1 V8 with four-barrel carburetor producing 185 hp (138 kW; 188 PS) (175 hp ...
The LT-1 was available in the Corvette and Camaro Z28. Power was down in 1971 to dual-rated 330 hp (246 kW) (gross)/255 hp (190 kW) (net) and 360 lb⋅ft (488 N⋅m) of torque with 9.0:1 compression, and again in 1972 (the last year of the LT-1, then rated using net only, rather than gross, measurement) to 255 hp (190 kW) and 280 lb⋅ft (380 N ...
In 1971, the compression ratio was decreased to 9.0:1 and horsepower decreased to 330 hp (246 kW), then the same in Corvette and Camaro. A net horsepower rating of 275 hp (205 kW) was also given. In 1972, the rating decreased again, then to a net of 255 hp (190 kW). Gross horsepower was not given in 1972.
The 1980 and 1981 Z28 models included an air induction hood scoop with an intake door that opened under full throttle. The RS SS package was dropped in 1972 and reintroduced in 1996. Road & Track included the 1971 SS350 as one of the 10 best cars in the world in August 1971.
In 1971, the LS-5 produced 365 hp (272 kW) and 550 lb⋅ft (746 N⋅m), and the LS-6 option came in at 425 hp (317 kW) and 575 lb⋅ft (780 N⋅m). In 1972, only the LS-5 remained, when SAE net power ratings and the move towards emission compliance resulted in a temporary output decline, due to lowered compression, to about 270 hp (201 kW) and ...
The first-generation Chevrolet Camaro is an American pony car introduced by Chevrolet in the fall of 1966 for the 1967 model year.It used a brand-new rear-wheel-drive GM F-body platform and was available as a 2-door, 2+2 seat, hardtop, and convertible.
This combination raised the compression from 9.5:1 to 10.0:1. The L33 also used a unique camshaft not shared with any other engine, with the specifications at .050 duration being: 193 duration, .482 lift, 116 LSA. As a result, power increased by 15 hp (11 kW), to 310 hp (230 kW) and 335 lb⋅ft (454 N⋅m).
Chevrolet specifications included both "gross" and "net" horsepower figures in 1971, which was a year before the industry-wide transition to SAE net horsepower figures. SAE net horsepower standardized horsepower ratings in accord with SAE standard J1349 figures to get a more accurate horsepower figure.