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The 350 2-barrel V8 of 145 hp (108 kW) was the base Laguna engine. Options for any Chevelle included a 350 4-barrel V8 of 175 hp (130 kW) and a 454 4-barrel V8 rated at 245 hp (183 kW). Hardened engine valve seats and hydraulic camshafts made these engines reliable and allowed them to accept the increasingly popular unleaded regular gasoline.
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 standard engine for all models was an inline-six, but not available with the optional three-row seats. [8] For the 1970 model year, the Chevelle 300 Deluxe series was renamed to Chevelle, and the inline-six engine was no longer available in the station wagons. The series' model code was changed to 1C starting with the 1972 model year.
The 454 engine option was available for the first half of the model year in the Chevelle and thus the 1975 Laguna had the 400 as the top engine. The 49-states' engine line-up was - the standard 145-horsepower 350 two-barrel V8, the optional 175-horsepower 400 four-barrel V8, and the 215-horsepower 454 four-barrel V8.
The SS option price remained US$312 [19] A new Turbo-Hydramatic 350 three-speed automatic was made available for non-SS Novas with six-cylinder and V8 engines, although the older two-speed Powerglide continued to be available on the smaller-engined Novas. 1969 SS models were the first Nova SS models to have standard front disc brakes.
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 ...
A rear wheel drive sports car with a modern 430 hp small-block V8 engine and race-tuned suspension, it was billed as "a modern interpretation of Chevrolet's Super Sport heritage". Though never intended for production, the vehicle was used as a show car and to hint at what was ahead for Chevrolet sports car design.