323 HP @4,200 RPM/ 444 LB-FT TORQUE @3,000 RPM
price: $6,168
part number: 19420877
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    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.

    Part Number: 19332531
    Engine Type: Chevy Small-Block V-8
    Displacement (cu in): 383
    Bore x Stroke (in): 4.005 x 3.800
    Block: Cast-iron with 4-bolt main caps
    Crankshaft: 4340 forged steel
    Connecting Rods: Heavy-duty PM steel
    Pistons: Hypereutectic aluminum
    Camshaft Type: Hydraulic roller
    Camshaft Lift (in): .431 intake / .451 exhaust
    Camshaft Duration (@.050 in): 196° intake / 206° exhaust
    Cylinder Heads: Vortec iron; 64cc chambers
    Valve Size (in): 1.940 intake / 1.500 exhaust
    Compression Ratio: 9.1:1
    Rocker Arms: Stamped steel
    Rocker Arm Ratio: 1.5:1
    Water Pum: Cast-iron
    Recommended Fuel: Regular pump
    Maximum Recommended rpm: 5,000
    Flexplate: 12.750"
    Balanced: External

    • Requires the reuse of the stock intake manifold, wiring harness, and fuel injection system
    • Due to calibration variances between half, three-quarter- and one-ton vehicles, this engine is designed for half-ton trucks and SUVs only
    • This engine is not emissions-legal in CA or states that have adopted CA emissions regulations
    • Comes with 12.750" externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.
    • Has right-side dipstick
    • Not available as a Partial Engine
    • Performance recalibration of OEM ECU will significantly increase torque and horsepower

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