Engine Blocks

JEGS offers a large selection of engine blocks for Chevrolet, Ford and Mopar applications. Choose an engine block from GM Performance, Dart, World products, Ford Racing, Mopar and others. Build a 454 big block engine, a stroker small block or a big cube horsepower monster with an engine block from JEGS. JEGS also carries engine stands to help assemble a new engine.

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Engines & Components Engine Blocks

Chevrolet Performance 350 SB Bare Engine Block


350 Bare Block
  • 9.025 Deck Height
  • 2-Piece Rear Main Seal
  • 4-bolt Main Gray Iron Caps
  • Max Stroke 3.750
  • $838.56
    Estimated Ship Date: 11/24/17
    Lowest Price Guarantee
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    Chevrolet Performance LS3/L92 6.2L Aluminum Bare Engine Block, 525HP


    LS3/L92 6.2L Bare Block
  • Direct replacement for 2007-08 L92, 2008-12 LS3, 2009-12 L9H and 2010-12 L94/L99
  • Production aluminum block with iron sleeves
  • 4.065" finished bore (103.25mm)
  • Tested to over 500 horsepower!
  • $1,695.35
    Estimated Ship Date: 11/24/17
    Lowest Price Guarantee

    Chevrolet Performance LS2 6.0L Aluminum Bare Engine Block 450HP


    LS2 6.0L Bare Block
  • Direct replacement for 2005-2008 LS2 Corvette, SSR, GTO 6.0L and TrailBlazer SS
  • Production 319-T5 aluminum block with iron sleeves
  • 4.000" finished bore (101.6mm)
  • Tested to over 450 horsepower!
  • $1,264.60
    Estimated Ship Date: 11/24/17
    Lowest Price Guarantee

    Chevrolet Performance 6.0L Gen IV Cast Iron Bare Block Engine, 500HP


    Gen IV 6.0L Bare Block
  • Direct replacement for 2008-2010 Gen IV Block RPO, LY6 & L96
  • Production cast iron block
  • Production oiling system
  • 6-bolt main bearing caps
  • 4.000" finished bore (101.60mm)
  • 9.240" deck height
  • $1,126.03
    Estimated Ship Date: 11/24/17
    Lowest Price Guarantee

    Chevrolet Performance LSX454 Engine Block Standard Deck


    LSX454 Engine Block
  • Standard Deck
  • 4.185'' Bore
  • 9.240'' Finished Deck Height
  • Billet-Steel Main Caps
  • Includes All Hardware
  • Used in LSX454 Crate Engine

  • $3,159.38
    Estimated Ship Date: 11/24/17
    Lowest Price Guarantee

    Chevrolet Performance LSX Engine Block Standard Deck


    LSX Engine Block
  • Standard Deck
  • 3.880" Finished Siamese Bore
  • 9.260" Semi-Finished Standard Deck Height
  • 4.250" Maximum Stroke
  • Capable of 364-482cid
  • Accepts all LS & LSX heads, cranks, cams, etc.
  • Approximate Finished Weight: 225 lbs

  • $2,727.60
    Estimated Ship Date: 11/24/17
    Lowest Price Guarantee

    Chevrolet Performance 502ci BB Engine, Bare


    502 Bare Block
  • 9.800 Deck Height
  • 1-Piece Rear Main Seal
  • 4-bolt Main Cast Iron Caps
  • Max Stroke 4.250
  • $1,951.93
    Estimated Ship Date: 11/24/17
    Lowest Price Guarantee


    Chevrolet Performance LS7 7.0L Aluminum Bare Block Direct replacement for 2006-'12 Corvette


    LS7 7.0L Bare Block
  • Direct replacement for 2006-2012 Corvette 7.0L LS7
  • Production 319-T5 aluminum block with pressed-in iron sleeves
  • 4.125" finished bore (104.78mm), deck plate honed
  • Tested to over 500 horsepower!
  • $3,177.83
    Estimated Ship Date: 12/01/17
    Lowest Price Guarantee


    Chevrolet Performance 454ci BB Engine, Bare


    454 Bare Block
  • 9.800 Deck Height
  • 1-Piece Rear Main Seal
  • 4-bolt Cast Iron Main Caps
  • Max Stroke 4.250
  • $1,361.24
    Estimated Ship Date: 11/24/17
    Lowest Price Guarantee

    Chevrolet Performance LS9 6.2L Aluminum Bare Block Engine 900HP Max


    LS9 6.2L Bare Block
  • Direct replacement for 2009-2012 Corvette ZR1 6.2L Supercharged
  • Production cast-aluminum block with iron sleeves
  • 4.065'' finished bore (103.25mm)
  • Rated for more than 635 horsepower!
  • $3,835.31
    Estimated Ship Date: 12/01/17
    Lowest Price Guarantee

    Chevrolet Performance LS3/L92 6.2L Aluminum Bare Block Engine 800HP Max


    LSA 6.2L Bare Block
  • Direct replacement for 2009-12 Cadillac CTS-V 6.2L Supercharged and 2012 ZL-1 Camaro
  • Production cast-aluminum block with iron sleeves
  • 4.065'' finished bore (103.25mm)
  • Rated for more than 550 horsepower!
  • $2,556.88
    NO ETA
    Lowest Price Guarantee

    Chevrolet Performance 400 Cast Iron Bow Tie Sportsman Competition Block (350 Mains)


    400 Bow Tie Sportsman Block
  • CNC-machined cast iron competition block
  • 4-bolt nodular mains (splayed caps on center 3 mains)
  • 4.117" finished bore
  • 350 Sized Mains
  • Tall Lifter Bores
  • 2-piece rear main seal
  • $1,949.14
    Estimated Ship Date: 12/01/17
    Lowest Price Guarantee

    Chevrolet Performance Bow Tie Sportsman Engine Block (2-Piece Rear Main Seal), Standard Deck


    Bow Tie Sportsman Engine Block
  • Big Block Chevy (2-Piece Rear Main Seal)
  • Standard Deck: 9.800''
  • 4.494'' Finish Bore (4.600'' Maximum)
  • $2,089.41
    Estimated Ship Date: 12/01/17
    Lowest Price Guarantee



    Chevrolet Performance LSX376 Engine Block Standard Deck


    LSX376 Engine Block
  • Standard Deck
  • 4.065'' Bore
  • 9.240'' Finished Deck Height
  • Billet-Steel Main Caps
  • Includes All Hardware
  • Used in LSX376 Crate Engine

  • $3,159.38
    Estimated Ship Date: 12/01/17
    Lowest Price Guarantee

    Chevrolet Performance 383 Bare Block Engine, 9.025 Deck Height


    383 Bare Block
  • 9.025 Deck Height
  • 4.005 Bore
  • 1-Piece Rear Main Seal
  • 4-bolt Gray Iron Main Caps
  • Max Stroke 3.800
  • $1,036.19
    Estimated Ship Date: 12/01/17
    Lowest Price Guarantee
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    Chevrolet Performance Bow Tie Sportsman Engine Block (2-Piece Rear Main Seal), Tall Deck


    Bow Tie Sportsman Engine Block
  • Big Block Chevy (2-Piece Rear Main Seal)
  • Tall Deck: 10.200''
  • 4.494'' Finish Bore (4.600'' Maximum)
  • $2,244.87
    Estimated Ship Date: 12/01/17
    Lowest Price Guarantee

    Chevrolet Performance LT1/LT4 6.2L Bare Engine Block, Replacement for '14-'15 Stingray LT1


    LT1/LT4 6.2L Bare Block
  • Direct replacement for 2014-2015 Stingray LT1
  • Production cast-aluminum block with iron sleeves
  • 4.065'' finished bore (103.25mm)
  • LT1-Style Cylinder Heads Only
  • $1,694.69
    Estimated Ship Date: 12/01/17
    Lowest Price Guarantee