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Chevy 383 Stroker LT1 Long Block with 395 hp and 410 ft-lbs of torque. This engine features the following parts:
- GM LT1 block bored, honed, decked and align honed
- Speedpro® performance camshaft:
- 230/230 @ .050
- .480 lift
- 108 lobe center
- New Durabond® cam bearings
- Balanced rotating assembly
- New 3.75” stroke steel crankshaft
- New 5.7 I-beam rods with ARP® rod bolts
- New King® performance bearings
- Speedpro® performance pistons with Molly® rings
- 10 to 1 compression ratio
- New Melling® performance timing set
- New Melling® performance high volume oil pump
- GM Aluminum LT1 cylinder heads
- 2.02”/1.60” stainless steel valves
- 100 lbs. valve springs
- ARP® head bolts
- 3 angle seats
- bronze guides
- positive seals
- New push rods, rocker stands and stamped rockers
- New Fel-Pro® performance gasket set
As with all our remanufactured engines, this Chevy 383 Stroker LT1 Long Block features new pistons, rings, complete gasket set, oil pump, and valvetrain installed. The block is bored and honed and new cam bearings and freeze plugs are installed. The heads are resurfaced, featuring new guides and seals, then refinished with a 3-angle valve job. Crankshafts are reground and micro polished to factory specs. Each motor is pretested for compression, oil pressure, and oil flow before leaving the factory.
Our limited warranty covers parts and labor for 12 months unlimited mileage
History of the Chevy LT1 Engine
In 1992, GM created a new-generation small-block engine and again called it LT1 to recall the 1970 LT-1. It displaced 5.7 liters and was a 2-valve pushrod design, although a 4.3 liter variant known as the L99 was also offered beginning in 1994. The LT1 was unique with a reverse-flow cooling system which allowed for the engine to run at a higher compression. This was accomplished by cooling the heads first, thus reducing the risk for engine knock at the higher compression.
Other cars received detuned versions of the LT1 in the years following 1992. In the Camaro and Firebird, the LT1 engine was rated at 275 hp (202 kW) and 325 ft·lbf (439 Nm) for the years 93-95. The F-Body was up to 285 hp (210 kW) and 335 ft·lbf (452 Nm) with this engine in the 1996-1997 model year with the addition of dual catalytic converters. In 1996-97 the SS/WS6 versions were rated at 305 hp, which was the true rating of all the models produced those years. The base versions were rated lower in an effort to help customers feel like they were getting more for their money, when in reality the only difference was a different intake that became heat-soaked on the SS and provided marginally cooler air on the WS6.
In the 1994 to 1996 B-body (Impala SS, Caprice and Roadmaster) and D-body (Fleetwood) version, the LT1 engine produced 260 hp (191 kW) and 330 ft·lbf (446Nm).
There were a few different versions of the LT1. All feature a cast iron block, but only the Corvette and F-bodies got aluminum heads. 1994 saw new sequential port injection and a mass airflow sensor. A new vented version of the opti-spark distributor appeared in 1994 on the B-Bodies and Fleetwood and in 1995 on the Corvette and F-Bodies. 1996 saw major revisions for OBD-II - a second catalytic converter on the F-body cars (which was standard since 1995 in California), a crank position sensor, rear oxygen sensors, and a new computer. Some OBD-II features had been added to the Corvette starting in 1994 for testing purposes. The 1997 model year Camaro and Firebird were the last year for this engine in a GM production car.
This engine was used in:
- Aluminum heads and 4-bolt mains
- 1992-1996 Chevrolet Corvette C4
- Aluminum heads and 2-bolt mains
- 1993-1997 Chevrolet Camaro Z28/Pontiac Firebird Formula and Trans Am variants
- Iron heads and 2-bolt mains, 4.3 (L99) and 5.7 liter options
- 1994-1996 Buick Roadmaster (LT1 only)
- 1994-1996 Cadillac Fleetwood (LT1 only)
- 1994-1996 Chevrolet Caprice (LT1 or L99)
- 1994-1996 Chevrolet Caprice Police Package (LT1 or L99)
- 1994-1996 Chevrolet Impala SS (LT1 only)
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