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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.


  • 23 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 09/29/14

    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 09/29/14

    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 09/29/14
    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 09/29/14
    Head Studs

    312-P4876757AB
    A4/A8 Head Stud Kit
  • Fits A4/A8 Blocks w/ W9 Cylinder Heads
  • Fits Two Cylinder Heads
  • $457.99
    Order Today Ships 09/29/14

    312-P5007912
    A4/A8 Head Stud Kit
  • Fits A4/A8 Blocks w/ W9RP Cylinder Heads
  • Fits Two Cylinder Heads
  • $1,144.99
    Order Today Ships 09/29/14

    312-P5153699
    A4 Head Stud Kit
  • Fits A4 Blocks w/ P9 Cylinder Heads
  • Fits One Cylinder Head
  • $459.99
    Order Today Ships 09/29/14
    Cam Bearings

    312-P5007361
    A4 Cam Bearings
  • Fits A4/R4 Blocks w/ W9/W9RP/P5/P5 Hemi Cylinder Heads
  • Fits 60mm Journal on Cam
  • Roller Bearings - Set of 5 Pieces
  • $176.99
    Order Today Ships 09/29/14

    312-P5153700
    A4 Cam Bearings
  • Fits A4 Blocks w/ P9 Cylinder Heads
  • Fits 60mm Journal on Cam
  • Roller Bearings - Set of 5 Pieces
  • $196.99
    Order Today Ships 09/29/14
    Camshaft Cores - Unground Lobe

    312-P5007468
    A4 Camshaft Core - UGL
  • Fits A4 Blocks w/ W9 or W9RP Cylinder Heads
  • Unground Lobes (Requires Custom Grind to Your Specifications)
  • 60mm Journals
  • $407.99
    Order Today Ships 09/29/14

    312-P5153519
    A4 Camshaft Core - UGL
  • Fits A4 Blocks w/ P9 Cylinder Heads
  • Unground Lobes (Requires Custom Grind to Your Specifications)
  • 60mm Journals
  • $479.99
    Order Today Ships 09/29/14
    Crankshafts

    312-P5007573
    Forged Crankshaft - Un-Machined
  • Forging 4340 Steel
  • Un-Machined - Machine to your Specifications
  • Approximate Stroke Range 3.000" to 3.250"
  • $295.99
    Order Today Ships 09/29/14

    312-P5007907
    Forged Crankshaft
  • Forged 4340 Steel
  • 3.075" Stroke
  • 2.25" Main Journals (Use w/ Ford 302 Bearings)
  • 2.000" Rod Journals (Use w/ SBC Small Journal Rod Bearings)
  • $1,487.99
    Order Today Ships 09/29/14

    312-P5153520
    Billet Crankshaft
  • Billet 4340 Steel
  • 3.075" Stroke
  • 2.25" Main Journals (Use w/ Ford 302 Bearings)
  • 1.888" Rod Journals (Use w/ Honda Rod Bearings)
  • $3,552.99
    Order Today Ships 09/29/14
    Cylinder Sleeves

    312-P5007788
    Ductile Iron Cylinder Sleeve
  • 4.355" OD
  • 4.120" ID - Rough Bore
  • 5.700" Length
  • Fits A4 & A8 Engine Blocks
  • 1/pkg
  • $99.99
    Order Today Ships 09/29/14
    Gear Drives & Service Parts

    312-P5007469
    Gear Drive Package
  • Fits All A4 Blocks
  • Includes Gear Set, Timing Cover, Cam Hub, Seal Retainer & Hardware
  • $1,523.99
    Order Today Ships 09/29/14

    312-P5007853
    Replacement Cam Hub & Hardware
  • Fits All A4/A8/Aluminum "A" Blocks
  • $247.99
    Order Today Ships 09/29/14

    312-P5153457
    Replacement Gear Set
  • Fits All A4/A8/Aluminum "A" Blocks
  • $565.99
    Order Today Ships 09/29/14

    312-P5153458
    Replacement Idler Set
  • Fits All A4/A8/Aluminum "A" Blocks
  • Includes Idler Shaft, Bearing, 2 Spacers, 3 Screws & Snap Ring
  • $393.99
    Order Today Ships 09/29/14

    312-P5153459
    Replacement Timing Cover
  • Fits All A4 Blocks
  • $651.99
    Order Today Ships 09/29/14

    312-P5153463
    Replacement Cam Drive
  • Fits All A4/A8/Aluminum "A" Blocks
  • $235.99
    Order Today Ships 09/29/14

    312-P5153464
    Replacement Damper Seal Mount
  • Fits A4/Aluminum "A" Blocks
  • $168.99
    Order Today Ships 09/29/14

    312-P5153465
    Replacement Cam Cover
  • Fits All A4/A8/Aluminum "A" Blocks
  • $196.99
    Order Today Ships 09/29/14

    23 Products