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12681429 5.7L 350 c.i. SBC Crate Engine + Level 3 Install Kit

Brand: GM OE Engine

Part Number: 12681429K3

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$3,349.94



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12681429 GM 5.7L SBC 350 Crate Engine + Level 3 Install Kit

Put this kit together with your exhaust and accessory drive system and you have a turn-key engine!

All new - not remanufactured! Designed to replace numerous GM production car, truck, SUV and van engines used from 1973-1985. This long block was once known as the GM Goodwrench 350 and includes a durable short-block and traditional 76 cc iron cylinder heads with early-style perimeter-bolt valve covers. Internals consist of a four-bolt main block, nodular iron crankshaft and smooth hydraulic-flat tappet camshaft. This engine ships with our Level 3 Install Kit.

12681429 GM 5.7L SBC 350 Crate Engine + Level 3 Install Kit

Put this kit together with your exhaust and accessory drive system and you have a turn-key engine!

12681429K3 Specifications:

  • 4-bolt main with 2-piece rear main seal
  • 4-quart oil pan, oil pump, oil pump pickup and oil pump drive shaft installed
  • Nodular iron crankshaft, internally balanced
  • LT1/LT4 powdered metal connecting rods
  • Cast aluminum pistons (dished), 8.5:1 compression ratio
  • Hydraulic flat tappet cam (.383"/.401" Lift, 194 / 202 Duration @ .050", and 112° lobe separation)
  • Cast iron cylinder heads with 76cc chambers
    • 1.940'' Intake / 1.500'' Exhaust valves
    • 1.250'' diameter valve springs
    • 1.5:1 ratio rocker arms
    • 3/8'' pressed-in rocker studs
  • Level 3 Install Kit includes the following:
    • 1 - 19299222 – OIL FILTER ADAPTER AND GASKET KIT
    • 2 - 03951644 – OIL FILTER ADAPTER BOLTS 
    • 1 - 89028862 – OIL FILTER
    • 1 - 10207373 – THERMOSTAT
    • 1 - 10105135 – THERMOSTAT HOUSING (WATER NECK) GASKET
    • 1 - 141-682 – DISTRIBUTOR
    • 8 - 19302744 – SPARKPLUGS
    • 1 - MSD 31249 – MSD 8.5mm IGNITION WIRES
    • 1 - 10147994 – INTAKE MANIFOLD AND DISTRIBUTOR GASKET KIT
    • 1 - 06487779 – PCV
    • 1 - 06415325 – FUEL PUMP AND GASKET
    • 1 - 12560223 – FUEL PUMP GUIDEPLATE TO ENGINE GASKET
    • 1 - 12361146 – STARTER
    • 1 - 12551537 – HARMONIC BALANCER
    • 1 - 88864346 – ENGINE SEALANT
    • 1 - EDE 2701 – EDELBROCK PERFORMER INTAKE MANIFOLD
    • 1 - CHOICE OF LONG (13113) or SHORT (12103) STEWART WATER PUMP with GASKETS
    • 1 - CHOICE OF EDELBROCK 1806 or HOLLEY 4150 CARBURETOR

Our Level 3 installation kit provides a nearly turn-key engine package for your car or truck! It doesn't get much more complete than this! We even offer you the choice of Edelbrock 1806 650-cfm Thunder AVS or Holley 4150 670-cfm Street Avenger carburetors with this kit AND the choice of a long or short Stewart brand water pump. (Please make note of your carb. choice and water pump length in the "additional comments" area during checkout.)

This engine is new from the oil pan to the valve covers, including the four-bolt main engine block. The nodular iron crankshaft features enlarged journal fillets for increased durability. The camshaft is patterned after the famed 327cid/300hp profile from the 1960s; coupled with the larger displacement, provides good low-end torque and plenty of passing power. Cylinder heads are 76cc cast-iron with 1.94 in. intake and 1.50 in. exhaust valves.

Now is the perfect time to replace those old gaskets, plugs, wires and thermostat, etc. You wouldn't want an old water pump to jeopardize your new engine or have an old starter leave you stranded after all the work yo've done. All parts are new items direct from our Chevrolet Dealership! Karl Performance Parts gives you more...



View a full list of 5.7L 350 cubic inch Small-Block Chevy V8 crate engines.

Chevrolet O.E. Replacement Crate Engines include a 36-month or 100,000-mile limited warranty when installed in proper applications. Contact us with your VIN or vehicle description to verify warranty.

Click here for more detailed warranty information.


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