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The L72 was a 427 cu in (7.0 L) 90° overhead valve V8 big-block engine produced by Chevrolet between 1966 and 1969. Initially rated at 450 horsepower, the rating dropped to 425 hp (317 kW) shortly after its release (although there was no change in power).
The Chevrolet Caprice is a full-size car produced by Chevrolet in North America for the 1965 through 1996 model years. Full-size Chevrolet sales peaked in 1965, with over a million units sold. It was the most popular car in the U.S. in the 1960s and early 1970s, which, during its production, included the Biscayne, Bel Air, and Impala.
Beginning in 1969, the highest performance 427 models were fitted with the new open (vs. closed) chamber cylinder heads, along with design improvements in crankshafts, connecting rods, and pistons, adopted from the Can-Am development program. Chevrolet gave all 427 engines except the ZL1 a torque rating of 460 lb⋅ft (624 N⋅m).
The Statesman's optional V8 was the 245 kW (329 hp) version from the WK Caprice, with the WL Caprice's engine obtaining a further 5 kW (6.7 hp). The V8s received a stronger GM 4L65-E automatic transmission , while the Alloytec V6 versions received a new five-speed GM 5L40-E automatic.
A total of 69 ZL1 Camaros were produced. The engine alone cost over US$4,000—or more than an entire base V8 Camaro. Rated at 430 hp (321 kW) gross at 5200 rpm and 450 lb⋅ft (610 N⋅m) of torque at 4400 rpm/ [ 30 ] 376 hp (280 kW) SAE net "as installed", it could produce over 500 gross with exhaust changes and tuning .
The all-new 1965 Biscayne was larger yet, and offered an even wider range of engines, including a new, larger 250-ci inline-six. For the 1967 model year the smaller 230 was dropped. For 1966 the top engine became the new Big-Block 427 ci V8, available in a high-powered, high-revving 425 hp (317 kW) version with solid lifters. Although not ...
A special 427 cu in (7.0 L) version of the 409 cu in (6.7 L) engine was used in the 1963 Chevrolet Impala Sport Coupe, ordered under Chevrolet Regular Production Option (RPO) Z11. This was a special package created for drag racers and NASCAR and included a 427 with aluminum body parts and a cowl-induction air intake system.
In 1991, the Oldsmobile 307 was replaced with a 305 cu in (5.0 L) throttle body fuel-injected small-block Chevrolet L03 V8, which was also found in Chevrolet's Caprice, C/K light trucks, and G-series vans. In 1993, the 180 hp (134 kW) 350 cu in (5.7 L) L05 V8 became standard in the newly-renamed Cadillac Fleetwood.