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Mopar Performance Cast Iron Hemi/Wedge Blocks


Mopar Performance
Mopar Performance Cast Iron Hemi/Wedge Blocks

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The "Elephant" Motor Returns!

Mopar Performance and World Products came together to create refined 426/440 HEMI/Wedge engine blocks. Made from high-density cast iron and available in ''Production'' or ''Race'' variations. Blocks accomodate all OE components and feature improved oiling to the rockers from the galleys. Blocks are built for punishment with their .600'' deck thickness and cross-bolted, first four nodular main caps. All blocks are clearance for a 4.750" crank w/ external oil line. CNC Production blocks feature Mopar Casting number P5153843.

CNC Race Blocks feature the same benefits of the CNC Production Blocks plus:

  • Mopar Casting number P5153778I
  • Bronze Lifter Bushings
  • Optional Raised +.250" Cam
  • Stiffening Webs & Thicker End-Rails
  • Dual Bell Housing Bolt-Pattern (Chevy & Mopar)
  • Can Be Machined for 60mm Cam Bearings
  • BB-Chrysler Hemi Cast Iron Siamesed-Bore Block
  • Rough Bored at 4.240''
  • +.250'' Raised Camshaft
  • Tall Water Jackets



  • CNC Production Blocks
    Mopar Performance P5153944 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153944
    BB-Chrysler Wedge Cast Iron Siamesed-Bore Block
  • Rough Bored at 4.310''
  • With Lifter Holes
    $159.00
  • $3,192.99
    Mopar Performance P5153942 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153942
    BB-Chrysler Hemi Cast Iron Siamesed-Bore Block
  • Rough Bored at 4.240''
  • With Lifter Holes
    $159.00
  • $2,919.99
    Mopar Performance P5155072 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5155072
    BB-Chrysler Hemi Cast Iron Siamesed-Bore Block
  • Finished Bore at 4.250''
  • With Lifter Holes
    $119.00
  • $2,954.99
    Mopar Performance P5153861 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153861
    BB-Chrysler Hemi Cast Iron Siamesed-Bore Block
  • Rough Bored at 4.498''
  • With Lifter Holes
    $159.00
  • $2,919.99
    Mopar Performance P5153862 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153862
    BB-Chrysler Hemi Cast Iron Siamesed-Bore Block
  • Finished Bore at 4.500''
  • With Lifter Holes
    $119.00
  • $3,386.99
    Mopar Performance P5153943 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153943
    BB-Chrysler Hemi Cast Iron Siamesed-Bore Block
  • Rough Bored at 4.240''
  • No Lifter Holes
    $119.00
  • $3,715.99
    Mopar Performance P5153863 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153863
    BB-Chrysler Wedge Cast Iron Siamesed-Bore Block
  • Rough Bored at 4.490''
  • With Lifter Holes
    $119.00
  • $3,279.99
    Mopar Performance P5153860 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153860
    BB-Chrysler Wedge Cast Iron Siamesed-Bore Block
  • Finished Bore at 4.500''
  • With Lifter Holes
    $119.00
  • $3,166.99
    CNC Race Blocks
    Mopar Performance P5155015 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5155015
    BB-Chrysler Hemi Cast Iron Siamesed-Bore Block
  • Rough Bored at 4.240''
  • +.250'' Raised Camshaft
  • No Lifter Holes
    $119.00
  • $6,339.99
    Mopar Performance P5153867 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153867
    BB-Chrysler Hemi Cast Iron Siamesed-Bore Block
  • Rough Bored at 4.490''
  • +.250'' Raised Camshaft
  • No Lifter Holes
    $119.00
  • $6,339.99
    Mopar Performance P5153871 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153871
    BB-Chrysler Wedge Cast Iron Siamesed-Bore Block
  • Rough Bored at 4.490''
  • +.250'' Raised Camshaft
  • No Lifter Holes
    $119.00
  • $5,504.99
    Mopar Performance P5153870 - Mopar Performance Cast Iron Hemi/Wedge Blocks
    312-P5153870
    BB-Chrysler Wedge Cast Iron Siamesed-Bore Block
  • Finished Bore at 4.500''
  • With Lifter Holes
    $119.00
  • $6,449.99

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