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6.2L fitted to a 1987 HMMWV. The original 6.2 L (379 cu in) diesel V8 was introduced in 1982 for the Chevrolet C/K and was produced until 1993. The 6.2L diesel emerged as a high-fuel-economy alternative to the V8 gasoline engine lineup, and achieved better mileage than Chevrolet's 4.3L V6 gasoline engine of the 1980s, at a time when the market was focused on power rather than efficiency.
1965–2009 Chevrolet Big-Block V8 (originally "Turbo-Jet") 1967–1972 GMC Truck 60-degree V8 (derived from the GMC 60-degree V6) 1967–1984 Cadillac New V8; 1969–1984 Holden 253; 1969–2000 Holden 308 (stroke reduced in 1985, making it 304 cu in (5.0 L); 350 cu in (5.7 L) version also produced from mid 1994 for use by HSV) 1982–1995 ...
Chevrolet/GMC C/K powertrain details (1973–1991) [49] [50] Engine Engine family Production Code (RPO) Output Notes Horsepower Torque 250 cu in (4.1 L) I6 Chevrolet Turbo-Thrift: 1973–1979 LD4 105 hp (78 kW) 185 lb⋅ft (251 N⋅m) 1-bbl Monojet carburetor; "Integrated" cylinder head introduced in 1975 1979–1984 LE3 130 hp (97 kW)
The Allison 1000 transmission is paired with the optional Duramax turbo-diesel instead. For 2011, the HD models were upgraded with a new fully boxed high strength steel frame from front to rear improving stiffness by 92 percent with bigger rear springs, larger engine and transmission mounts and new hydraulic body mounts to improve the ride.
During the latter years of production, 379-and-432-cubic-inch (6.2 and 7.1 L) versions with enlarged crankshaft journals were manufactured as well. GMC produced a 637-cubic-inch (10.4 L) 60° V8 with a single camshaft using the same general layout (bore and stroke) as the 478 V6. The 637 V8 was the largest-displacement production gasoline V8 ...
They used Pontiac's 347-cubic-inch (5.7 L) in 1957. For 1958, GMC reduced the bore of Pontiac's 370-cubic-inch (6.1 L) to 3.875 in (98.4 mm), resulting in a displacement of 336-cubic-inch (5.5 L). (In Canada, however, GMC used the Chevrolet small-block engine rather than the Pontiac.) For 1959, as the Pontiac engine's stroke was lengthened to 3 ...
The long-running C/K nomenclature was retired by Chevrolet in favor of a singular Chevrolet Silverado nameplate (as GMC had done in 1988 with the GMC Sierra). For the 1999 model year, GM continued sales of the fourth-generation C/K alongside its GMT800 successor, intending to use up leftover parts stock. [ 15 ]
For 1991, the 700R4 was renamed to the 4L60. The TBI (throttle body injection) system used on the Blazer's standard 5.7 liter V8 had longer throttle shaft bearings, new throttle return springs, and improved fuel mixture distribution. The 5.7 liter V8 also had new heavy-duty intake valves and powdered metal camshaft sprockets.
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