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Mopar Performance P5155507

Gen III Hemi 6.1L Aluminum Block Semi-Finished Bore: 4.125"

Mopar Performance P5155507

312-P5155507

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Estimated to ship on 05/01/18
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Truck Freight: $119.00
Mopar Performance P5155507 Gen III Hemi 6.1L Aluminum Block Semi-Finished Bore: 4.125" $4,342.99
Gen III Hemi 6.1L Aluminum Block
  • Semi-Finished Bore: 4.125"
  • Can be bored to 4.155"

  • Specifications:

    Cam Bearings Included
    Yes
    Cylinder Bore as Shipped (in.)
    4.125
    Deck Height (in.)
    9.239
    Engine Block Material
    Aluminum
    Engine Block Style
    Stock/OEM standard deck
    Finished Cylinder Bores
    Yes
    Freeze Plugs Included
    Yes
    Main Bearings Included
    No
    Main Bolt Style
    4-bolt
    Main Cap Fasteners Included
    Yes
    Main Cap Material
    Billet steel
    Main Caps Included
    Yes
    Main Journal Type
    OEM
    Quantity
    Sold individually
    Raised Cam Location
    No
    Rear Main Seal Style
    1-piece
    Manufacturer's Part Number:
    P5155507

    Gen III Hemi Aluminum Blocks are 100 pounds lighter than 6.1L production cast iron blocks. Lightweight aluminum improves performance in more ways than one: acceleration, braking, weight distribution, and vehicle dynamics.

  • Compatible with all Gen III 6.1L Hemi engine parts
  • Gen III Hemi dress-up parts also fit Gen III Hemi aluminum blocks
  • Completely redesigned water jackets accommodate Siamese bore
  • Lifter bores can be opened to 1.060" for a bushed-style lifter
  • Camshaft bearing support area increased to permit a 60mm roller bearing
  • Billet steel main caps with 4-bolt center caps strengthen the bottom end for severe applications
  • Crankcase clearance for 4.125" stroke crank (4.250" will fit with machining around oil drainbacks)
  • Can support a dry sump package for reduced windage and to allow more engine installation options
  • Computational Fluid Dynamics (CFD) studies have been performed to balance thermal conditions for consistent, reliable performance
  • Main bearing supports and the block's bottom end have been modified with the strength required for a forced induction 440+ ci motor
  • Additional boss in the front timing chain area for an idler, additional boss for a front gear drive, and attachments for a front motor plate

  • Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations