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The 366 was produced only as a tall-deck engine, with a deck 0.4 in (10 mm) taller than the 396, 402, and 454 short-deck big-blocks. The engine was never officially put into a road car, but the 366 was a dealership special application to the Second Generation Chevelle. [27] 1966 L78 375 Horspower 396 cubic inch engine
The LS6 454 option, originally announced as a regular production option on the Chevelle SS for 1971, was dropped early in the model year. No official records indicate that any 1971 Chevelles were assembled with the LS6 engine. For 1971, the SS option could be ordered with any optional V8, becoming more of a dress-up option than a performance ...
Offered in ‘71 only was the LS6 454 cu in (7.4 L) big-block featuring aluminum heads and delivering 425 hp (317 kW), highest of the 1970-72 MYs, and could be ordered with an automatic transmission. The ZR1 option was carried over for LT1 equipped cars and the ZR2 option, offered this year only, provided a similar performance equipment package ...
The LS6 was originally only used in the high-performance C5 Corvette Z06 model, with the Cadillac CTS V-Series getting the 400 bhp (298 kW) engine later. The V-Series used the LS6 for two years before being replaced by the LS2 in 2006. For 2006, the Z06 replaced the LS6 with the new LS7.
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.
Although 1970 LS6 Chevelles are generally more collectible today, 1970 L78 Chevelles are in fact rarer (4,475 units versus 2,144). Between 1966 and 1969 the L78 was the highest-horsepower engine available in Chevrolet's intermediate line via a Regular Production Option (RPO).
LS6 or LS-6 may refer to: Rolladen-Schneider LS6, glider (1983–2003) GM 2500 engine LS6, straight-4 engine (1978–1979) GM LS engine LS6, V8 engine (2000s) Chevrolet Big-Block engine LS-6 (454in 3), V8 engine (1970s) LS-6, a series of Chinese satellite-guided glide bomb. The Headingley and Hyde Park postcode area of Leeds; LS6, by Mario Crespo
The Z06 uses a tuned version of the standard LS1 engine (designated the LS6), with a higher power output of 385 hp (390 PS; 287 kW), later bumped to 405 hp (411 PS; 302 kW) starting in 2002. Although its total output was less than that of the previous late model ZR-1, the Z06 was much lighter, and could out-perform the ZR-1 in every category ...
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