Step 1: Engine & Transmission Mounts

  • Get that Gen III Hemi Engine Mounted in your 1966-70 Mopar B-Body
  • Engine Location Optimized to Eliminate Firewall & Brake Booster Modifications
  • Modular Transmission Crossmember works with A727, NAG1, or 8HP70 Transmission
  • 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 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)
  • Integrated Windage Tray & Baffle to Control Oil (Fits up to 4.060” Stroke)
Shop Oil Pans

Step 3: Headers

  • Swap Headers and Exhaust Manifolds work Together with the Motor Mounts & Crossmember for An Easy Engine Swap
  • Headers are made from 304 Stainless Steel Construction
  • Exhaust Manifolds are made from hi-silicon-moly ductile iron
  • Long Tube Headers Clear Left or Right Side Starters, Power Steering, and Brake Booster
Shop Swap Headers

Step 4: Exhaust Systems

  • Header Back Exhaust System - Direct Fit to BH2358 Swap Headers
  • 304 Stainless Steel
  • Choose From 2.5" or 3.0" Tube Diameter
Shop Exhaust Systems

Step 5: EFI 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

  • Special Flex Plate Adapts A727, A904, A500 & A518 (46RH/46RE) Transmissions (small block) & Torque Converter to Gen III Hemi Engine
  • Fits 8-Bolt Crankshaft on Gen III Hemi Engine
  • Dished Design Eliminates Crankshaft Adapters & Spacers
  • Stamped Steel
Shop Flexplates

Step 7: Radiator

  • Choose from 3 or 4 Row Gen III Hemi Swap Radiators for your B-Body
Shop Radiators

Step 8: 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 9: 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

Step 10: Universal Parts for Mopar B-Bopy Gen III Hemi Swap

Gen III Hemi Swap System for 1966-1972 Mopar B-Body

  • In Stock
  • Frostbite
  • Hays
  • Holley
  • Holley Kits
  • Holley Sniper EFI
  • Hooker BlackHeart
  • Lakewood
  • Sniper
  • White Box
Product Type
  • Dipsticks and Oil Accessories
  • Engine and Transmission Support
  • Engine Mounts
  • Exhaust System
  • Exhaust Tip
  • Flexplates
  • Fuel Pump Module
  • Fuel Tank
  • Fuel Tank Straps
  • Headers
  • Manifold
  • Oil Pan Kit
  • Radiator
  • Transmission Crossmember
  • Transmission Crossmember Support
  • Transmission Mount
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    1966-72 Mopar B-Body Gen III Hemi Swap System

    Holley has you covered for your favorite B-Body Gen III Hemi swap components and kits. We have Engine Mounts, Transmission Crossmembers, Headers, Exhaust Systems, and Terminator X for your Charger, Coronet, Road Runner, Belvedere, Satellite, or Super Bee.