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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 big-block engine is a series of large-displacement, naturally-aspirated, 90°, overhead valve, gasoline-powered, V8 engines that was developed and have been produced by the Chevrolet Division of General Motors from the late 1950s until present. They have powered countless General Motors products, not just Chevrolets, and have been ...
These models brought the 427 engine to market, which allowed Chevrolet to package them as crate engines, a concept the company conceived itself. [1] The brand could then sell them individually for installation in any GM vehicle-based project. The year 1970 saw GM's return to NASCAR. The company backed every Chevrolet-powered NASCAR team in the ...
Most of these engines are installed in the Z06, some are also sold to individuals by GM as a crate engine. The 2014 and 2015 Z28 were the only Camaros to receive the 427 LS7. As of early 2022, the LS7 is no longer being supplied as a crate engine, with Chevrolet intending to fulfill all current orders until inventory is depleted. [66]
This was Chevrolet's second 4.3L power plant; four other Chevrolet engines displaced 4.3L: the Vortec 4300 (a V6 based on the Chevrolet 350 cu in (5.7 L), with two cylinders removed), the original 265 cu in (4.3 L) V8 in 1954, a bored version of the stovebolt-era 235 inline six displacing 261 cu in (4.3 L), and a derivative of the Generation II ...
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).