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Mopar Performance A4 Aluminum Engine Blocks & Components


Mopar Performance
Mopar Performance A4 Aluminum Engine Blocks & Components

Product images may differ from actual product appearance.

The Mopar A4 engine is a 4-cylinder aluminum block racing engine that is based on half of a small block Mopar. This engine uses one small block Mopar V8 cylinder head, valves, rocker arms, valve cover, and header. The drag racing versions of this block have the small block Mopar bell-housing and can be used with a transmission. The Midget versions of the block have the bell-housing machined away to save weight since these racing engines are not used with a transmission.



All A4 Aluminum Blocks have the following features:
  • 4-Bolt Billet Steel Main Caps (All are Cross Bolted)
  • 2.25" Mains (Use Ford 302 Main Bearings)
  • Ductile Iron Cylinder Sleeves w/ 4.120" Rough Bore
  • Siamese Bore Casting

    These racing engines must be used with a dry sump oiling system, and the gear drive systems shown below.


  • 4 Products
    A4 Drag Race Blocks w/ Small Block Mopar Bell-Housing

    312-P5007467
    A4 Aluminum Block
  • Fits P5 or P5 Hemi Cylinder Head
  • Full Bell-Housing - Small Block Mopar
  • Deck Height: 9.000"
  • $69.99
    $5,481.99
    Order Today Ships 09/25/14

    312-P5007636AB
    A4 Aluminum Engine Block
  • Fits W8, W9 or W9RP Cylinder Head
  • Full Bell-Housing - Small Block Mopar
  • Deck Height: 8.400"
  • $69.99
    $7,534.99
    Order Today Ships 09/25/14

    312-P5153903
    A4 Aluminum Engine Block
  • Fits P9 Cylinder Head
  • Full Bell-Housing - Small Block Mopar
  • Deck Height: 8.400"
  • $69.99
    $8,971.81
    Order Today Ships 09/25/14
    Midget Race Blocks w/o Bell-Housing

    312-P5007466
    A4 Aluminum Engine Block
  • Fits W8, W9 or W9RP Cylinder Head
  • No Bell-Housing
  • Deck Height: 8.400"
  • $69.99
    $6,115.99
    Order Today Ships 09/25/14

    4 Products