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Chevrolet Performance L31 HD Engine Kit

Chevrolet Performance 12530283K5
Easy Kit


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Chevrolet Performance L31 HD Engine Kit $2,804.37
L31 HD Engine Kit
  • 1996-2000 GM Truck/SUV/Van
  • Crate Engine
  • Carburetor
  • Intake Manifold
  • Intake Gaskets & Hardware
  • Oil Dip Stick & Tube
  • Valve Covers
  • Valve Cover Gaskets
  • Distributor

  • Chevrolet Performance 12530283K5 Details

    L31 HD Engine Kits

    Kit Includes:

    • Chevrolet Performance Truck 350ci L31-R Long Block Engine With Vortec Heads - 809-12530283
    • Edelbrock Performer Series 600 CFM Carburetor with Electric Choke - 350-1406
    • JEGS L31 Vortec Intake Manifold - 555-513002
    • JEGS Small Block Chevy Intake Manifold Gaskets - 555-210003
    • JEGS Small Block Chevy Intake Manifold Bolts - 555-83201
    • Chevrolet Performance Small Block Chevy Engine Oil Dip Stick - 809-12551144
    • Chevrolet Performance Small Block Chevy Engine Oil Dip Stick Tube - 809-12551154
    • JEGS Small Block Chevy Cast Aluminum Centerbolt Valve Covers - 555-50104
    • JEGS GM Centerbolt Style Valve Cover Gaskets - 555-210076
    • Chevrolet Performance HEI Distributor - 809-93440806

    Fitment Notes: 

    This engine is not intended for marine use.

    Free Shipping!

    The Chevrolet Performance Truck 350ci L31-R Long Block Assembly was designed as a direct replacement for 1996-2000 GM Full size Trucks and 1996 -2002 Full size Vans. This engine comes factory fresh, manufactured using the latest in high tech computer controlled equipment and are GM engineered, tested and validated to deliver smooth, dependable performance with a Limited 3 Year / 100,000 Mile warranty!

  • *1986-2000 style block, 4 bolt mains
  • 1pc rear seal nodular iron crankshaft
  • Powdered metal connecting rods
  • Hypereutectic pistons 9.4:1 compression Ratio
  • Hydraulic roller camshaft: Int Lift .414", Exh Lift .428", Int Duration @.050" 191, Exh Duration @ .050" 196, Lobe Centerline-111
  • Vortec cylinder heads - 64cc, 1.94'' intake valve, 1.50'' exhaust valve
  • Also includes: Oil pan, timing cover, valve covers, harmonic balancer

    JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

    GM Warranty

    Note: *Service engine block contains English threads. When used for 2001 and newer vehicles, must also use 2000 model year starter/transmission/engine mounting bolts.

  • Is this kit CA emissions compliant?

    Asked by: Ultra1
    No, this kit is not California emissions legal.
    Answered by: Rusty B
    Date published: 2018-06-19

    Will a TH700-R4 work with this engine ?

    Asked by: prose
    A 700R4 is compatible with this engine.
    Answered by: Jon Jegs Tech
    Date published: 2018-04-20

    can you use a mechanical fuel pump

    Asked by: jake brown
    This engine does not have a provision for a mechanical fuel pump.
    Answered by: Jon Jegs Tech
    Date published: 2018-01-23

    Is this a new or seasoned block?Will this work in an 80 Chevrolet C30 with a SM465 transmission?

    Asked by: Johnny1
    This is a new block from GM, It is not made to work with an 80 Chevy C30, it is designed to be used in a 96 and later application.
    Answered by: Rusty B
    Date published: 2018-01-10

    This kit has carburetor in it but isn't the cam design for fuel injection? Or is there a different cam in this engine for carburetor. I like to put this engine in a 72 GMC four-wheel-drive pickup.

    Asked by: Richie72
    That engine will work just fine in a carb application, then it will drop right into that truck.
    Answered by: BrandonJ
    Date published: 2017-11-08

    How can I install this Kit on my 1998 Chevy silverado 5.7 without getting a check engine light. Going to do a motor swap in Dec

    Asked by: bob72
    To prevent the engine code from triggering custom tuning of your ECU will be needed.
    Answered by: Jegs Tech
    Date published: 2017-08-29

    How much horse power and torque does this engine produce?

    Asked by: 00001
    This is an OE replacement engine for 1996-1998 Vortec Trucks. It provides the same power output as the original engine.
    Answered by: Flanary
    Date published: 2018-04-14
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    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations