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1964-1967 Buick Gran Sport - LS Swap

The Buick Gran Sport was the apex of performance luxury in its time. When equipped with the legendary 401 cubic inch Nailhead engine, the Gran Sport pumped out 325 hp and a whopping 445 lb/ft of torque. If that doesn't get the job done, we've made dropping in a Gen III/IV LS engine a bolt-in affair.

Step 1: Engine and Transmission Mounts

  • Choose from Forward Position or Rearward Position of Motor Mounts
  • Forward Position works best with Late Model Transmissions (i.e. T56, 4L60E through 4L80E)
  • Rearward Position works best with Classic Transmissions (i.e. 200R4 & TH400)
  • Crossmember Works with Both Style Motor Mounts
  • Crossmember Spacers are needed with Some Transmission Options
Shop Mounts and Crossmembers

Step 2: Oil Pans

  • The factory LS Oil Pans don't fit or hang too low during an engine swap
  • LS 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, or carbon black ceramic finish
  • Complete kit w/ sump baffle, OE style pickup, sump plug, oil filter stud, and oil passage cover
Shop Engine Swap Oil Pans

Step 3: Headers and Exhaust

  • Choose from Long-Tube or Mid-Length Headers or Cast Iron Exhaust Manifolds
  • Headers are Available w/ 1-3/4" or 1-7/8" Primary Tubes & 3" Collectors
  • Exhaust Manifolds have 2-1/4" or 2-1/2" Collectors
  • Choose from 2-1/2" or 3" Dual Exhaust Systems
  • 304 Stainless Steel Construction - for Corrosion Resistance and Long Life
  • Adapters are Available to Connect Headers (Mid-Length or Long Tube) & Exhaust Manifolds to the Exhaust System
Shop Exhaust

Step 4: EFI Fuel Tanks

  • Factory Style Fuel Tanks with In-Tank EFI Fuel Module
  • Eliminate Rust & Dirt with a New Fuel Tank
  • 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
  • Screw-In Inlet & Outlet - Allows Changes to Match Radiator Hose Sizes
  • Optional Fan Shroud & Electric Fans
Shop GM LS Engine Swap Radiators

Step 6: 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 7: 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 8: Universal LS Swap Parts

  • Find Your Parts
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