top of page


SKU: 19433037

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. It even comes with a new distributor, water pump, and other components that would be replaced during a rebuild.


*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

bottom of page