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Step 1: Engine & Transmission Mounts

  • Get that Gen III Hemi Engine Mounted in your 1970-1974 Dodge Challenger / Plymouth Barracuda (Mopar E-Body)
  • Engine Location Optimized to Eliminate Firewall & Transmission Tunnel Modifications
  • Modular Transmission Crossmember works with A727, NAG1, 8HP70, 8HP90, and TKX Transmissions
  • Order Transmission Adapter to Fit Desired Transmission
Shop Engine and Transmission Mounts

Step 2: Oil Pans

  • The Factory Oil Pans on Gen III Hemi Engines Don’t Fit or Hang too Low for Muscle Car Engine Swaps
  • Cast Aluminum or Fabricated Steel Mid-Sump Engine Swap Oil Pan
  • Complete Oil Pan Kit That Includes Oil Pan, Pickup Assembly, O-Ring Seal, Windage Tray, Baffling & Mounting Bolts – No Extras That Must be Purchased Separately (i.e. gaskets, pickup, windage tray, bolts)
  • Cast Pans Feature Integrated Windage Tray & Baffle to Control Oil (Fits up to 4.060” Stroke)
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Step 3: Headers

  • Swap Headers work Together with the Motor Mounts & Crossmember for An Easy Engine Swap
  • 304 Stainless Steel Construction
  • 1-7/8" Primary Tubes with 3.0" Collectors
  • Headers Clear Starter, Power Steering, and Brake Booster
Shop Headers

Step 4: Exhaust System

  • Header Back Exhaust System - Direct Fit to BH2358 Headers
  • 304 Stainless Steel
  • 3.0" Tube Diameter
  • Clears All Popular Transmissions Offered as Part This Swap System
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Step 5: Fuel Tanks

  • Complete EFI Fuel Tanks with In-Tank Fuel Pump & Fuel Gauge Sending Unit
  • Eliminate Rust with New Tank & Upgrade for EFI Applications
  • Coated Steel Construction
  • EFI Fuel Pump Modules - Also Available Separately - Fits Inside Stock Tank
Shop Fuel Tanks

Step 6: Drivetrain

  • Tremec TKX & A727 Transmissions Available
  • Special Flex Plate Adapts A727, A904, A500 & A518 (46RH/46RE) Transmissions (small block) & Torque Converter to Gen III Hemi Engine
  • Stamped Steel Dished Flex-Plate Fits 8-Bolt Crankshaft on Gen III Hemi Engine
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Step 7: Radiator

  • Choose from 3 or 4 Row Gen III Hemi Swap Radiators for your E-Body
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Step 8: Swap Accessories

  • The Factory Battery is Often in the Way of the Air Intake & Air Filter - Using Some Gen III Hemi Factory Intake Manifolds
  • The Battery Relocation Tray Moves the Battery to the Right Side of the Vehicle and Provides Clearance for the Air Inlet & Air Filter
  • 45 Degree Oil Filter Adapter is Required for the Gen III Hemi Swap on the Mopar E-Body
  • Part Number VK040066 Includes the Seal & Mounting Bolts Required for Installation
Shop Swap Accessories

Step 9: Accessory Drive

  • Mid-Mount Accessory Drive Systems Pull the Accessories in Tight for Extra Clearance & Reduce Power Steering Pressure to Avoid Damage to the Steering Box
  • Factory Car Accessory Drive Systems Can be Modified with Alternator Relocation Kits (for extra Clearance) and Power Steering Kits to Reduce Power Steering Pressure (to Avoid Damage to Steering Box)
  • Fits Gen III Hemi 5.7L, 6.1L, and 6.4L Engines
Shop Mopar Gen III Hemi

Step 10: Terminator X & X Max

  • Plug & Play Gen III Hemi Engine Control
  • Works with Holley Accessories - Analog Gauges, Shift Light, Pro Dash
  • EV1 or EV6 Injector Drivers
  • 3.5" Touch Screen Handheld w/ Internal Data Logging & Calibration Wizard
  • Free EFI Tuning Software
  • Chrysler 46RE Automatic Transmission Control - With Terminator X Max & Optional Transmission Harness
Shop Terminator X and X Max GEN III HEMI Kits
  • In Stock
  • B&M
  • Frostbite
  • Hays
  • Holley
  • Holley Kits
  • Holley Sniper EFI
  • Hooker BlackHeart
  • Hurst
  • Lakewood
  • Mopar
  • Quick Time
  • Sniper
  • Tremec
  • Weiand
  • White Box
Product Type
  • Bellhousing
  • Engine Mounts
  • Exhaust System
  • Flexplates
  • Floor Pan Patch Panel
  • Fuel Pump Module
  • Fuel Tank
  • Headers
  • Manual Transmission
  • Oil Filter Adapter
  • Oil Filter Relocation Kit
  • Oil Pan Kit
  • Radiator
  • Swap Accessory
  • Transmission
  • Transmission Crossmember
  • Transmission Mount
  • Virtual Kit
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    1970-1974 E-body Gen III Hemi Swap System

    Comprehensive Gen III Hemi Conversion kits for your Mopar E-Body (1970-1974 Dodge Challenger & Plymouth Barracuda). Holley has all the part needed to make your swap successful (i.e. engine mounts, crossmember, oil pan, headers, exhaust system, accessory drive, fuel tank, and engine management system).