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The L03 produced 170 hp (127 kW) at 4400 rpm and 255 lb⋅ft (346 N⋅m) of torque at 2400 rpm in 1993–1995 GM trucks. This engine used the TBI throttle body fuel injection, which was a hybrid between EFI and carburetor technology. It used an EFI system with electronically controlled injectors, which were mated to a twin barrel "carburetor" body.
The engine uses a Mitsubishi TD06-17C/8 cm 2 turbocharger producing 14 psi (0.97 bar) of boost and a Garrett Water/Air intercooler, as well as revised intake manifolds, fuel system, exhaust manifolds, and a 48 mm (2 in) twin-bore throttle body from the 5.7 L GM Small-Block engine. [3]
Chevrolet (GM) GMC Truck (GM) Also called: GMC Sierra Chevrolet Silverado (1999–2000 Argentina and Brazil) Chevrolet Cheyenne (Mexico) Production: December 8, 1986 – 2000 (US, standard and extended cab) October 1991 – 2000 (US, four-door) 1990–2002 (US, C3500HD) 1991–2001 (Mexico and Venezuela) 1997–2001 (Argentina and Brazil) Model ...
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.
The LG3 was used in Chevrolet S-10 and GMC Sonoma pickups and was only produced for 2003. The LU3 was used in the Chevrolet and GMC full-size trucks and vans, the Chevrolet Astro and GMC Safari vans, and the Chevrolet S-10 Blazer and GMC S-15 Jimmy. The LG3 was rated at 180 hp (134 kW) and 245 lb⋅ft (332 N⋅m) of torque.
The GMT 400 and similar GMT 480 was the platform used for the Chevrolet C/K and GMC Sierra full-size pickup trucks beginning with the 1988 model year. [1] The GMT 410, GMT 420, GMT 425, and GMT 430 variants were derived for full-size SUVs, including the 1992–1994 Chevrolet Blazer and 1995–2000 Tahoe, and the GMC Yukon from late 1991 to 2000.
All 1978-1990 Iron Duke engines used a micarta camshaft gear that meshed directly with a steel gear on the crankshaft. 1991-92 VIN R and U engines used a timing chain instead. The Grumman LLV (Long Life Vehicle) built from 1987 until 1994 for the United States Postal Service for use in mail delivery were initially powered by the Iron Duke engine.
The firing order of older big-block engines is 1-8-4-3-6-5-7-2 [63] while Vortec 8100's firing order is 1-8-7-2-6-5-4-3. Other upgrades of Vortec 8100 include a new 18-bolt head bolt pattern, longer connecting rods, different symmetrical intake ports, different oil pan rails, and the use of metric threads throughout the engine.
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