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The 1972 Chevelle SS top engine was rated at 270 net hp (201 kW), conforming with GM's decree that all engines would be rated at their net engine ratings. All other engines on the SS roster were unchanged from 1971. 1972 was the last year for the cowl induction option for the 454 cid engine and was not even mentioned in the 1972 Chevelle brochure.
In 1966 the L78 was available exclusively in the intermediate line. For 1967 the engine was additionally available in Chevrolet's new pony car, the Camaro. The following year the motor became available in the compact Chevy II also. For the 1970 model year the 396 was bored 0.03 in (0.76 mm), resulting in a 402 cu in (6.6 L) engine.
The Malibu SS was replaced in 1966 by a new Chevelle SS-396 series that included a big-block 396 cu in (6.5 L) V8 engine (Canadian market did not receive the SS396 but marketed the former Malibu SS nameplate until January 1967 when it was phased out), heavy duty suspension and other performance equipment.
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 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. 3- and 4-speed manual transmissions were available, as were the 2-speed Powerglide and 3-speed Turbo Hydra-Matic starting in 1967.
Chevrolet's second generation big-block, the Mark IV had been introduced in 1965 in two 396 cu in (6.5 L) versions. In 1966 Chevrolet added a 427 cu in (7.0 L) version that was available exclusively in the sports car (Corvette) and full-sized (Impala, Bel Air, Biscayne) lines. While a 396 was still available in full-sized cars, the L72 and the ...
In Canada, Beaumont offered an equivalent model, the Sport Deluxe (SD). For 1966, the SD was combined with the Chevrolet 230 cid six- cylinder, 283 or 327 cid small-block V8, or 396 cid Mark IV big-block V8, along with the same optional bucket seats/console package as the Chevelle SS 396, along with unique trim and emblems.
This engine was first seen in the Chevelle. This engine with the close-ratio four-speed manual transmission turned the normally mild Nova into a proper muscle car. The Powerglide automatic was not available with the 350 hp engine. The 1967 models received nothing more than a touch-up after a restyling for 1966.