502 HO Engine 461 HP @ 5100 RPM
Product Discontinued
CHEVROLET PERFORMANCEPART NUMBER: 809-19433157

502 HO Engine 461 HP @ 5100 RPM

Currently Unavailable

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

502 HO Engine
502 HO Engine
  • 461 HP @ 5100 RPM
  • 558 ft/lbs TQ @ 3400 RPM

    INSTALLATION NOTES:

    • Requires addition of carburetor, fuel pump, starter, distributor and ignition system (not included)
    • Clutch linkage bosses are now drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads, for clearance
    • 502 engines now have a mechanical fuel pump boss!
    • Comes with an externally balanced 14' automatic transmission flexplate. Use flywheel (p/n 809-14096987) and 11' clutch assembly for manual transmission applications
    • Passenger side RH oil dipstick & tube
    • Distributor with melonized steel gear MUST be used with long-blocks and Partial engines with steel camshafts, or engine damage will occur
    • Designed for pre-1976 street vehicles or any off-road vehicle
    • Not intended for marine applications

      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 break 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 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.

    19433157 supersedes 809-12568778

    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

  • Part TypeEngine
    BrandCHEVROLET PERFORMANCE
    Package Height31.5
    Package Width37.0
    Package Length38.5
    Weight602.0 PG
    Part CategoryPerformance Parts
    Wiring Harness IncludedNo
    Spark Plug Wires IncludedNo
    Cylinder Head MaterialCast iron
    Air Cleaner IncludedNo
    Carburetor IncludedNo
    Carb Eo NumberN/A
    Water Pump IncludedYes
    EmissionNot Legal
    Flexplate IncludedYes
    AssembledYes
    Engine Assembly StyleLong block
    Intake Manifold IncludedYes
    Engine Make/SizeChevy Big Block
    Flywheel IncludedNo
    Engine TypeHigh-Performance Crate Engine
    Rear Main Seal Style1-piece
    Valve Covers IncludedYes
    Horsepower461
    Distributor IncludedNo
    Camshaft StyleHydraulic roller tappet
    Engine Block MaterialCast iron
    Cylinder Heads IncludedYes
    Computer IncludedNo
    Throttle Body IncludedNo
    Harmonic Balancer IncludedYes
    QuantitySold individually
    Fuel DeliveryOne Carb
    Rpm Power Range1750-5250
    Engine BalanceExternal
    Compression Ratio8.75:1
    Oil Pan IncludedYes
    Part FitmentSemi Universal
    Engine Displacement502 ci.
    Timing Cover IncludedYes
    Spark Plugs IncludedNo
    Vendor Part Number19433157
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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