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1978-1987 Pontiac Grand Prix - LS Swap

1978 was the first year a V8 was not the standard engine for the Grand Prix as the car lost 600 lbs. in an effort to improve fuel efficiency. However, its G-Body platform is a solid base to build upon with numerous parts and compatibility with several different GM engines. If you want to drop a Gen III/IV engine in your Grand Prix, our LS swap systems can get it done.

Step 1: Engine and Transmission Mounts

  • Get that GM LS Engine Mounted in the 1978-1988 GM G-Body
  • Two engine mounting choices: engine brackets w/ SBC style mounts or crossmember brackets w/ 4th Gen F-body style engine mounts that allow LS/LT interchangeability
  • Transmission Options: TH400, 200R4, 4L60E, 4L65E, 4L70E, 4L75E, 4L80E, 4L85E, T56, and T56 Magnum
  • Vehicles That Didn't Come from the Factory w/ the 200R4 Transmisison Need Adapter 12647HKR
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: Exhaust Manifolds and Systems

  • Intended for GM LS engine swap applications where durability, quiet operation, and leak-free sealing is desired
  • Cast from Hi-Silicon-Moly Ductile Iron to provide durability and corrosion resistance
  • Tight tuck design provides universal fit for most popular chassis and a clean traditional muscle car appearance
  • 2.5 or 3.0 inch 304 stainless steel cat-back exhaust system
  • Kits are supplied with turn-down style exits under the rear quarter panels
  • Stainless steel straight through designed absorption mufflers for a muscle car sound without the resonance
Shop Exhaust

Step 4: Fuel Systems

  • 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: Radiators

  • 100% TIG welded (brazed) seams
  • Billet Aluminum Filler Neck and OEM style Brass Petcock
  • Polished top and tanks for custom show appearance
Shop GM LS Engine Swap Radiators

Step 6: Swap Accessories

  • Replace the Factory Rag Joint with a Modern Steering Shaft that Features U-Joints at Both Ends
  • DBW pedal and pedal mounts offer a plug and play solution for DBW installation
Shop Swap Accessories

Step 7: Accessory Drives

  • Choose from High Mount, Low Mount, or Mid Mount Accessory Drive Kits
  • Choose from Natural Aluminum, Black, or Polished Finish
  • Bracket Kits - Allow Reuse of Factory Components (High Mount & Low Mount)
Shop LS and LT Accessory Drives

Step 8: Terminator X and X Max

  • Standalone Plug and Play Engine Control for GM LS Engines
  • Terminator X Features Real-Time Fuel Learn, High Impedance Injector Drivers, Integrated 1bar MAP Sensor & 4 Programmable Inputs and Outputs
  • Terminator X Max - also Controls GM Automatic Transmission (4L60/4L65/4L70/4L75/4L80/4L85)
  • Inputs & Outputs Are Ideal for Electric Fans, Boost Control Solenoids, Progressive Nitrous Control & More
Shop Terminator X and X Max LS Kits

Step 9: Universal LS Swap Parts

  • Find Your Parts
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