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In addition to GM's active fuel management, start-stop system, and variable valve timing, which are already featured on GM's other full-size pickup truck engines, this engine also features GM's Intake Valve Lift Control which has 3 different intake cam profiles that are electromagnetically actuated to provide improved fuel economy and ...
The Chevrolet Stovebolt engine is a straight-six engine made in two versions between 1929 and 1962 by the Chevrolet Division of General Motors.It replaced the company's 171-cubic-inch (2.8 L) inline-four as their sole engine offering from 1929 through 1954, and was the company's base engine starting in 1955 when it added the small block V8 to the lineup.
This camshaft used the same lift and duration as the older design, but the cam was reprofiled to keep the valve lifters in full contact with the cam lobes as the cam ramps down. [7] The LG3 was used in Chevrolet S-10 and GMC Sonoma pickups and was only produced for 2003.
By 1957 the engine had grown to 283 cu in (4.6 L). Fitted with the optional Rochester mechanical fuel injection (FI) and a Duntov high-lift camshaft, it was one of the first production engines to produce 1 hp (0.7 kW) per 1 cu in (16.4 cc). The 283 was adopted by other Chevrolet models, replacing the 265 V8s.
The camshaft on the 1998 model year uses a higher lift design. (0.288 inches intake and exhaust.) Meanwhile the 1999 and newer trucks use a lower lift camshaft. (0.263 inches intake and exhaust.) This was pulled from the Haynes automotive manual for the S series trucks. Applications: 1998–2002 Chevrolet S-10, GMC Sonoma, and Isuzu Hombre
These engines differed only in that the L78 had a solid-lifter camshaft, while the L37 had a hydraulic lifter cam shaft. In 1966 the L78 was available exclusively in the intermediate line. For 1967 the engine was additionally available in Chevrolet's new pony car, the Camaro. The following year the motor became available in the compact Chevy II ...
Pushrods are long, slender metal rods that are used in overhead valve engines to transfer motion from the camshaft (located in the engine block) to the valves (located in the cylinder head). The bottom end of a pushrod is mated to a lifter, upon which the camshaft makes contact. The camshaft lobe moves the lifter upwards, which moves the pushrod.
Chevrolet introduced the 350 cu in (5.7 L) LT-1 in 1970, making it available in both the Corvette and Camaro. It was an optional engine in the Corvette, and available as part of the high-performance ZR-1 option. Between 1970 and 1972, only 53 ZRs were produced, making it one of the rarest Corvettes.
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