GF-EJ-HEMI-DIY Swap Block Mock-Up Engine Block, Hemi Gen III
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G FORCE PERFORMANCE PRODUCTSPART NUMBER: 472-GF-EJHEMIDIY

GF-EJ-HEMI-DIY Swap Block Mock-Up Engine Block, Hemi Gen III

$30999
ShippingShips on Sep 03, 2026
Lowest PriceLowest Price Guarantee

Dodge
Swap Block Mock-Up Engine Block
  • Hemi Gen III
  • Accurate & Rigid Representation of Actual Engine Block
  • Durable Steel Construction
  • Unique Tab-and-Slot Design
  • Resists Welding Heat
  • Includes Hardware

    G Force Performance GF-EJ-HEMI-DIY Features:

    • G Force patent-pending tab-and-slot version of the mock up block provides accurate mounting positions of engine accessories and bolt-ons.
    • This unique design is lightweight and comes disassembled for ease of shipping and storage.
    • Precision formed returns on all weight-bearing components and tight tolerance slots create a rigid and accurate representation of the Gen III Hemi engine block compared to bolt-together types.
    • One tool accomplishes accurate placement of a Hemi engine into the chassis build of your choice.
    • Easily positioned by hand, the days of slinging an engine on a crane in and out of your build are over.
    • It's designed to bolt to your transmission while also permitting the attachment of oil pan, motor mounts, headers, water pump and intake.
    • Save time and money and work more safely.
    • Durable steel construction resists heat from welding, so unlike foam blocks, custom motor mounts can be fabricated right on the block.
    • Comes with hardware for exhaust, motor mounts, bellhousing, oil pan, and water pump

    NOTE: The assembly video applies to all versions of our Swap Block Engine Mock Up Blocks.

  • Part TypeMock-Up Engine Block
    BrandG FORCE PERFORMANCE PRODUCTS
    Package Height4.0
    Package Width18.0
    Package Length24.0
    Weight30.0 PG
    Part CategoryPerformance Parts
    Part FitmentSemi Universal
    Vendor Part NumberGF-EJ-HEMI-DIY
    Package Qty1
    Package TypeEA
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