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The W72 E/C 301 replaced the standard L37 301, so the W72 code was dropped as all 301 engines now featured the Electronic Spark Control system. The 301T became certified to pass Californian and H/A emissions requirements, making it the most powerful Pontiac engine to be sold in California since the mid-1970s, even with a slight power decrease ...
The 1992–93 LT1s used speed density fuel management, batch-fire fuel injection and a dedicated Engine Control Module (ECM). In 1994 the LT1 switched to a mass airflow sensor and sequential port injection. A new, more capable computer controlled the transmission as well as the engine and got a new name: Powertrain Control Module (PCM). Where ...
Firebird II (1956, left) and III (1959, right) The General Motors Firebird comprises a quartet of prototype cars that General Motors (GM) engineered for the 1953, 1956, and 1959 Motorama auto shows. The cars' designers, headed by Harley Earl, took Earl's inspiration from the innovations in fighter aircraft design at the time. General Motors ...
The main upgrade for the engine was the ESC, (Electronic Spark Control) [19] which provided slightly more power at 170 hp (127 kW)for the 1980–1981 model years. The 1981 rendition of this engine was officially called the 301-EC [EC standing for Electronic Controls] in the 1981 GM factory service manual, removing the need for a W72 option ...
The third generation Pontiac Firebird was introduced in late 1981 by Pontiac alongside its corporate cousin, the Chevrolet Camaro for the 1982 model year. These were also the first Firebirds with factory fuel injection, four-speed automatic transmissions, five-speed manual transmissions, four-cylinder engines, 16-inch wheels, and hatchback bodies.
To ensure high quality in the Computer Command Control system, it will be given a final check at the end of the assembly line. Here the completely assembled vehicle will be tested by connecting the computer to a test computer. This will significantly improve GM's ability to catch anything wrong with the system or the car's engine." [1] [2] [3]
It was used on all GM vehicles, at least in the North American market, from 1975 through the mid-1980s. [vague] The system is an electronic system that requires no scheduled maintenance, provides up to 35,000 volts to fire the spark plugs and increase spark plug life, especially when unleaded fuel is used. The HEI system has 40% more voltage ...
This engine was used in the 1966-67 Tempest and Le Mans and 1967 Firebird. An optional high-performance Sprint version featured high-compression pistons, hotter cam, dual valve springs, split/dual exhaust manifold , stronger coil, and the then new Rochester Quadrajet carburetor. rated at 207 hp (154 kW). [ 5 ]
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