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1970-1976 Plymouth Duster - Gen III Hemi Swap

Sold alongside its Valiant sibling, the Duster added a two-door fastback compact car to Plymouth's lineup through the end of the muscle car era. Despite its small size, the Duster could be optioned with 318, 340, and 360 cubic-inch small blocks nestled between its A-Body frame rails. With our Gen III Hemi swap systems, you can drop some late model Mopar muscle in there too.

Step 1: Engine and Transmission Mounts

  • Get that Gen III Hemi Engine Mounted in your 1973-1976 Dodge Dart or Plymouth Duster, Scamp, or Valiant (Mopar A-Body)
  • Engine Location Optimized to Eliminate Firewall Modifications
  • Modular Transmission Crossmember works with A727, TKX Transmissions - (NAG1 Coming Soon)
  • Order Transmission Adapter to Fit Desired Transmission
  • TKX & NAG1 Use Transmission Tunnel Brace (Different Part for Each Transmission)
Shop Mounts and Crossmembers

Step 2: Oil Pans

  • Factory oil pans don't fit or they hang too low on engine swaps
  • Engine swap oil pans provide maximum clearance to the chassis and ground
  • OE (Original Equipment) style fitment for durability, strength, and proper sealing
  • Choose from natural aluminum casting, carbon black ceramic finish, or fabricated sheetmetal depending on the application
  • Complete kit with sump baffle, OE style pickup, drain plug, oil filter stud, and oil passage cover
Shop Engine Swap Oil Pans

Step 3: Headers and Exhaust

  • Swap Headers work Together with the Motor Mounts & Crossmember for An Easy Engine Swap
  • 1-7/8" Primary Tubes with 2.5" Collectors
  • Headers Clear Starter (Left & Right Hand Side Starters) and Brake Booster
  • Headers Work with Power Steering - When Used with Borgeson Steering Box and Hardline Kit 198-231
  • 2.5-inch Dual Exhaust System for Mopar A-Body
  • Choose from Exhaust Systems for 108-inch or 111-inch Wheelbase Length
  • Optional Polished Stainless Tips - Available Separately - Part # BHC304
  • 304 Stainless Steel Construction
Shop Exhaust

Step 4: Fuel Tanks

  • Eliminate Rust & Dirt with a New Fuel Tank
  • Factory Style Fuel Tanks with In-Tank EFI Fuel Module
  • EFI Fuel Pump Modules are Also Available Separately - Fits Inside Stock Tank
Shop Fuel Tanks

Step 5: 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
Shop Drivetrain

Step 6: Swap Accessories

  • Oil Filter Relocation Kit or Mopar 45 Degree Oil Filter Adapter Allows Extra Clearance for Gen III Hemi Swap in the A-Body
  • Power Steering Hardline Kit Protects Power Steering Hoses From Header Heat & Allows for Easier Access to Fittings - Use with Borgeson Power Steering Box & BH23104 Headers
  • Tunnel Patch Is Designed for Use with TKX Transmission
Shop Swap Accessories

Step 7: Accessory Drives

  • 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 8: Terminator X and X Max

  • Standalone Plug and Play Engine Control for Gen III Hemi engines
  • Terminator X Features Real-Time Fuel Learn, High Impedance Injector Drivers, Integrated 1bar MAP Sensor & 4 Programmable Inputs and Outputs
  • Chrysler 46RE Automatic Transmission Control - With Terminator X Max & Optional Transmission Harness
  • Inputs & Outputs Are Ideal for Electric Fans, Boost Control Solenoids, Progressive Nitrous Control & More
Shop Terminator X and X Max GEN III HEMI Kits

Step 9: Universal Gen III Hemi Swap Parts

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