HT383E
A high-torque direct replacement for 1996-99 GM full-size trucks and SUVs
The Chevrolet Performance HT383E crate engine is an affordable and more powerful emissions-legal* direct replacement for the tired 350 engine in your 1996-99 full-size GM truck or SUV. The larger displacement delivers up to 10 percent more horsepower and more usable torque for effortless towing. It is extra power you won’t get with a stock-type rebuild or reconditioned used engine.
The HT383E is designed to replace the L31 5.7-liter engine in half-ton models of the Silverado, Suburban, Tahoe, Sierra, and Yukon. You simply swap the intake manifold, throttle body, exhaust manifolds, and other accessories from your old 350 onto the HT383E and install it in your truck with no further modifications.
The engine uses a brand-new four-bolt main block, a forged-steel crankshaft, a smooth roller camshaft, and durable iron Vortec heads, helping it deliver the dependable power you expect from the venerable Small-Block V-8. Water pump is included.
*This engine is not emissions-legal in CA or states that have adopted CA emissions regulations.
Horsepower
323 HP
Torque
444 LB-FT
Tech Specs
Engine Type: Chevy Small-Block V-8
Displacement (cu. in.): 383
Bore x Stroke (in.): 4.000 x 3.800
Block (P/N 88962516): Cast-iron with four-bolt main caps
Crankshaft (P/N 12489436): 4340 forged steel
Connecting Rods (P/N 12497624): Heavy-duty PM steel
Pistons (P/N 12499103): Hypereutectic aluminum
Camshaft Type (P/N 14097395): Hydraulic roller
Camshaft Lift (in.): .431 intake / .451 exhaust
Camshaft Duration (@.050 in.): 196° intake / 206° exhaust
Cylinder Heads (P/N 12558060): Vortec iron; 64-cc chambers
Valve Size (in.): 1.940 intake / 1.500 exhaust
Compression Ratio: 9.1:1
Rocker Arms (P/N 10089648): Stamped steel
Rocker Arm Ratio: 1.5:1
Water Pump (P/N 88894341): Cast-iron
Recommended Fuel: 87 octane
Maximum Recommended rpm: 5000
Balanced: External