HT383E Engine 323 HP @ 4200 RPM
Product Discontinued
CHEVROLET PERFORMANCEPART NUMBER: 809-19420877

HT383E Engine 323 HP @ 4200 RPM

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This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

HT383E Engine
HT383E Engine
  • 323 HP @ 4200 RPM
  • 444 ft/lbs TQ @ 3000 RPM
  • 1996-1999 Chevy & GMC Full-size Trucks & SUV
  • Upgrades L31 350
  • *Not emissions-legal in California or states that have adopted CA emissions regulations

    INSTALLATION NOTES:

    • Requires the reuse of the stock intake manifold, wiring harness, and fuel injection system
    • Distributor and spark plug wires are not included
    • This engine is not emissions-legal in CA or states that have adopted CA emissions regulations
    • Comes with 12.750 in. 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

    Engine Break-In Procedure

    Use conventional or break-in oil (non-synthetic) for the first oil change, be sure to check the oil level in the engine and prime the oil system with an engine priming tool. 

    Engines with flat tappet hydraulic cams only - Run the engine between 2,000 and 2,500 RPM's, with no-load on the engine for the first 30 minutes. This is critical to breaking in the camshaft.

    Drive the vehicle with varying speeds and loads on the engine for the first 30 miles. Be sure not to use a lot of throttle or high RPM.  Run five or six medium-throttle accelerations to about 3000 RPM (40 to 50 MPH), then letting off in gear and coasting back down to 20 MPH. Run a couple of hard throttle accelerations up to about 5000 RPM (55 to 60 MPH), then letting off in gear and coasting back down to 20 MPH.

    Let the engine cool and change the oil and filter using conventional (non-synthetic) oil and check the coolant level, top off if necessary. Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading.  Change the oil and oil filter again using conventional (non-synthetic) oil.  Keep an eye on oil level during the first thousand or so miles.

    It would be suitable to use synthetic motor oil after the second recommended oil change and mileage accumulation.

    809-19420877 supersedes 809-19417374

  • Part TypeEngine
    BrandCHEVROLET PERFORMANCE
    Package Height29.0
    Package Width34.0
    Package Length42.0
    Weight375.0 PG
    Part CategoryPerformance Parts
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews
    Some parts are not legal for use in California or other states with similar laws / regulations
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