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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 ...
Between 1966 and 1969 the L78 was the highest-horsepower engine available in Chevrolet's intermediate line via a Regular Production Option (RPO). Despite this, in 1969 an L72 427 cu in (7.0 L), 425 hp (317 kW) engine could be ordered in an intermediate via a Central Office Production Order (COPO).
They featured the same powerplants as the Chevrolet Chevelle, including the OHV inline six-cylinder engine, and a variety of small- and big-block V8s. The V8 engine choices included small-block 283, 307, 327, and later 350 cubic-inch versions, while the Mark IV big-block could be ordered in its 396 cubic inch displacement from 1966 to 1969.
The 396 cu in (6.5 L) V8 was introduced in the 1965 Corvette as the L78 option and in the Z-16 Chevelle as the L37 option. It had a bore × stroke of 4.094 in × 3.760 in (104 mm × 95.5 mm), [ 27 ] [ 28 ] and produced 375 bhp (380 PS; 280 kW) at 5600 rpm and 415 lb⋅ft (563 N⋅m) of torque at 3600 rpm. [ 29 ]
In 1966 it was the most powerful engine available in the Corvette, and between 1966 and 1969 was the most powerful engine available in full-sized models. In 1969 the L72 was available via a Central Office Production Order (COPO) in Chevrolet's intermediate and pony car . Today these vehicles - referred to as COPOs - are among the most ...
All SS models come with distinctive "SS" markings on their exterior. The SS package was first made available for the 1961 Impala . [ 1 ] Some of the other models bearing the SS badge include the Camaro , Chevelle , El Camino , Impala , Monte Carlo , Nova and some trucks like the Silverado and S-10 , as well as the TrailBlazer SUV.
Believe it or not, it's machine washable, and the inclusive size range includes tall and petite options. At a mere $21, it's nearly 75% off. "So cute!" swooned a fashionable fan.
As mentioned above, the Nova option could not officially have V8 engines at this time—the standard SS engine was the six-cylinder (this was also applicable to the Impala (and later the early Chevelle c. 1964–65) when the SS was a sport and appearance package)—but small-block V8 engine swaps were commonplace among enthusiasts.
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related to: 1969 chevelle ss engine options