C3 Used Cross-Fire Fuel Injection Engine & 700-R4 Transmission Assembly 1982

C3 Corvette Cross-Fire Fuel Injection Engine&700-R4 Transmission Assembly

1982

This is a good, used C3 Cross-Fire Fuel Injection Engine&700-R4 Transmission Assembly which can be installed in any of the following Corvette models:

NOTE:Picture is for illustration purposes only.

History of the C3 Cross-Fire Fuel Injection Engine & 700-R4 Transmission Assembly

The engine in the 1982 Corvette was essentially the time-proven 350 cubic-inch V-8 that had powered Corvettes since the mid-1950’s, though it now came equipped with a newly developed twin throttle-body fuel-injection system instead of a carburetor. It featured an injector unit within a carburetor-like throttle body for each cylinder bank (a total of two injectors), while a crossover intake manifold fed the air/fuel mixture to the bank on its opposite side. This process sped up mixture velocity providing a more complete combustion, which resulted in greater thermal efficiency and power, plus the added benefit of reduced emissions.

Improved Computer Command Control (CCC) electronics, a technology that first appeared along with the lG4 California V-8 engine in 1980, governed the duration of injector opening in response to signals from various engine-mounted sensors. The new CCC was capable of making eighty adjustments per second (compared to just ten adjustments per second on earlier versions of the system). The fuel delivery system was given the name “Cross-Fire Injection”.

The “Cross-Fire” 350 was given the engine designation L83, and was rated at a respectable 200 bhp at 4,800 rpm, which was a 10 horsepower increase over the 1981 Corvette’s L81 engine. It delivered a peak torque of 285lbs/ft at 2,800 rpms. While neither of these numbers were overly impressive, the modest increases in horsepower and torque were still an improvement over the 1981 Corvette. More importantly, this horsepower increase was achieved while emission outputs were reduced. The L83 engine was the only engine offered to consumers during production of the 1982 Corvette.

Similarly, only a single transmission option was offered in 1982. While a manual gearbox had been available in every Corvette built since 1955, the 1982 Corvette only offered a standard four-speed automatic transmission. Designated the700-R4, this four-speed automatic was basically a variation of the three-speed Turbo-Hydra-Matic with a long striding overdrive fourth gear added on. The700-R4automatic was electronically linked to the car’s ECM (Engine Control Module). Shifts and the torque converter’s lockup clutch feature were precisely controlled by the ECM, depending on varying speed and load data inputs.