19435448 Chevrolet HT383/323HP Crate Engine
InfoVehicle Info Needed
CHEVROLET PERFORMANCEPART NUMBER: 809-19435448

19435448 Chevrolet HT383/323HP Crate Engine

$7,68877
Truck Freight
ShippingShips on 10/08/2026
Lowest PriceLowest Price Guarantee

HT383 383ci Engine
Chevrolet HT383/323HP Crate Engine
  • 323 HP @ 4200RPM
  • 444 ft. lbs. of Torque @ 3000 RPM

    INSTALLATION NOTES:

    • Requires addition of carburetor, ignition, and starter (not included)
    • Rochester Quadrajet or Holley 770-cfm carburetor recommended
    • Comes with 12-3/4' (12.75') externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission
    • Has right-side (passenger) oil dipstick
    • Designed for pre-1976 street vehicles or any off-road vehicle
    • Not intended for marine applications
    • Distributor with Melonized Steel Gear 809-88961867 MUST be used

       

    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 RPMs, with no load on the engine for the first 30 minutes. This is critical for 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 let off in gear and coast back down to 20 MPH. Run a couple of hard throttle accelerations up to about 5000 RPM (55 to 60 MPH), then let off in gear and coast 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 RPMs (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.

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    19435448 supersedes 19433036

  • Part TypeEngine
    BrandCHEVROLET PERFORMANCE
    Package Height29.6
    Package Width38.75
    Package Length42.0
    Weight519.0 PG
    Part CategoryPerformance Parts
    Engine TypeHigh-Performance Crate Engine
    Cylinder Head MaterialAluminum
    Engine Block MaterialCast iron
    Part FitmentUniversal
    Engine Displacement383 ci.
    Engine Make/SizeChevy Small Block
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning
    Your Cart

    Your shopping cart is empty!