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Ram Jet 502 Engine - GM (12499121)

12499121

Ram Jet 502 Engine - GM (12499121)

12499121

Discontinued Product

No Longer Available For Purchase

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Details

  • Brand:
    Buick, GMC, Cadillac, Hummer, Saturn, Oldsmobile, Pontiac, Chevrolet Parts
  • SKU: 12499121
  • Description:

    OUTRAGEOUS STYLE AND FUEL-INJECTED DRIVABILITY — ALL WITH
    BIG- BLOCK POWER

    The Ram Jet 502 blends the legendary torque and performance of the Big-Block with a modern port fuel injection system and tunnel ram-style high-rise intake manifold. It’s a combination that offers uncompromising performance in a visually stunning presentation.

    The unique Ram Jet fuel injection system stands 11 inches tall at its highest point and consists of a two- piece manifold/plenum assembly, eight injectors, a throttle body, and an updated MEFI 4 controller. Setup instructions are included, making it a simple “plug-and-play” installation.


    Supporting the unique induction system is a robust bottom end with an all-forged rotating assembly and a smooth hydraulic roller camshaft. The heads are high-flow aluminum oval-port parts from Chevrolet Performance.

    You’ll need to check your ride for clearance before closing the hood over the Ram Jet 502. Then again, it looks so impressive, you may just want to cruise around with the hood off!

    RAM JET 502 TECH SPECS

    Part Number:
    12499121
     
     
    Engine Type:
    Chevy Big-Block V-8
    Displacement (cu. in.):
    502
    Bore x Stroke (in.):
    4.470 x 4.000
    Block (P/N 19170540):
    Cast-iron with four-bolt main caps
    Crankshaft (P/N 10183723):
    Forged steel
    Connecting Rods (P/N 19170198):
    Forged steel, shot peened
    Pistons (P/N 12533507):
    Forged aluminum
    Camshaft Type (P/N 12366543):
    Hydraulic roller
    Camshaft Lift (in.):
    .527 intake / .544 exhaust
    Camshaft Duration (@.050 in.):
    224° intake / 234° exhaust
    Cylinder Heads (P/N 12562920):
    Aluminum oval port; 110-cc chambers
     
     
    Valve Size (in.):
    2.250 intake / 1.880 exhaust; stainless steel
    Compression Ratio:
    9.6:1
    Rocker Arms (P/N 12368082):
    Stamped steel
    Rocker Arm Ratio:
    1.7:1
    Distributor (P/N 1104060):
    HEI type
    Throttle Body (P/N 17113524):
    Included
    Water Pump (P/N 19168602):
    Aluminum, short-style
    Flexplate (P/N 10185034):
    14"
    Recommended Fuel:
    Premium
    Ignition Timing:
    35° @4,000 rpm
    Maximum Recommended rpm:
    5800
    Balanced:
    External


    INSTALLATION NOTES

    • The Ram Jet 502 requires a 12-volt power source (and ground), coolant, exhaust system, fuel feed, and fuel return line (to the fuel tank). An in-tank fuel pump is recommended
    • 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
    • Designed for pre-1976 street vehicles or any off-road vehicle
    • Not intended for marine applications
    • IMPORTANT! For a safe, proper, and trouble-free engine break-in, the MEFI 4 computer has a “green” mode that controls rpm during the break-in period. During this period, engine speed is limited to 4000 rpm in the first hour, 4500 rpm in the second hour, and 5500 rpm in the third hour
  • Condition: New
  • Replaces: 12497323
  • Sold In Quantity: 1

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Don't see something on the page you need? Feel free to contact us and we will build a custom order just for you. Our dedicated online parts associates are ready to help. Phone: 855-578-2622 Email: service@gmwholesaledirect.com

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