HT 383E High Performance replacement for 1996-1999 Light Trucks 350R engines An emissions-legal small block that brings on the torque for your '96-'99 GM truck/SUV!

Due to calibration variances between half-, three-quarter- and one-ton vehicles, this engine is designed for half-ton trucks and SUVs only

The HT383E crate engine from Chevrolet Performance is an exciting new extension of our “High Torque” line that is especially designed for '96-'99 full-sized GM pickup trucks and SUVs that is a direct replacement for your high-mileage 5.7 liter stock engine.

The HT383E offers you the same brute strength of our HT383: forged steel crank, 4-bolt main cast iron block, and a camshaft designed for towing and hard work. With 383 cubic inches, you also get a broad torque band that peaks at 444 lb,-ft, at 3000 rpm with 323 horsepower at 4200 rpm.

Our Chevrolet Performance Parts engineers designed the HT383E so that installation is as easy as possible. Simply, swap your new HT383E in place of your existing 5.7 liter engine using your stock intake manifold, wiring harness, and fuel injection system. The stock computer adapts to the new HT383E, and you suddenly have stump-pulling, big-inch small block at your disposal.

Specifications:
Power: 323 HP @ 4200 RPM, 444 ft. lbs. of torque @ 3000 RPM
Displacement: 383 CID
Bore x Stroke: 4.00” x 3.80”
Compression Ratio: 9.1:1
Recommended Fuel: 87 Octane
Block: Cast Iron, 1 piece rear seal, 4-bolt main caps.
Crankshaft: 4340 Forged Steel
Connecting Rods: HD Powdered Metal Steel
Pistons: Hypereutectic Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .431” Intake / .451” exhaust
Cam Duration @ .050”: 196 deg. Intake / 206 deg. Exhaust
Lobe Separation: 109 Degree
Cylinder Heads: Cast Iron Vortec, 3/8” pressed-in rocker studs.
Combustion Chamber: 64cc
Valves: .194” Intake/ 1.50” Exhaust
Rocker Arms: Stamped Steel, 1.5:1 Ratio
Valve Springs: 10212811
Balance: External
Maximum GM Recommended RPM: 5000
Ignition Timing: Base 10 degrees BTDC, 32 degrees total

Engine Includes:
• Fully GM assembled long block
• Stamped Steel Black OE Valve
• Oil pump, pick-up and oil pan
• 12-3/4” Auto Trans Flexplate
• 8” Harmonic Balancer
• Front timing cover
• Cast Iron Long Water Pump
• Oil Filter and Adapter
• Passenger Side RH Oil Dipstick and Tube