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Monte Carlo/G-Body LS Swap and Conversion Parts for Sale

Looking to LS or LT swap your Monte Carlo? PSI can get you set up with everything you need to get your ride 'Wired up and fired up!". From our Harnesses Made in the USA with high quality wire and different loom options to suit your needs, Our PCM tuning service where we can get you set up with a base tune for your engine and transmission, Engine & Transmission Mounts, Dakota Digital gauges, American Autowire Chassis Harnesses, Accessory Brackets, Oil Pans, ETC. 

  • Application: 1999-2007 24X Drive by Cable with 4L60E/4L80E Transmission Controller Kit

    This kit includes a complete Standalone Engine harness, MAF sensor, Two Upstream O2 Sensors, TCC Brake Switch, and a PCM Flashed for your application with a mounting bracket giving you a ready to run kit to help simplify your LS swap! All our engine harnesses are professionally constructed from Brand New GM Delphi Connectors and TXL (Polyethylene Cross Linked) High Temperature Wire to GM Specifications. All Harnesses are 100% Quality Inspected prior to shipping.

    $1,099.00
  • Adjustable LS Swap engine mounts for 1975-79 Nova, 1982-92 Camaro, & 1978-88 Monte Carlo for installing the 1997-2013 Gen III/IV LS series engine

    $124.99
  • Classic Update kits are designed for projects that require more circuits than would have been available in an original chassis harness. Each kit includes all the basics needed to rewire a vehicle from headlight to tail light, and will accommodate popular add-on items such as electronic fuel injection, aftermarket gauges and common supporting modifications. This harness includes. An updated ATC fuse panel and fuses, along with modern GXL wire throughout. Wire functions are labeled every 3 to 5 inches. Pre-built dash harness and our exclusive gauge cluster disconnect system for use with stock or aftermarket instruments. Engine and front light harness with extra-long leads for custom routing and updated engine and transmission combinations. Original-style bulkhead connectors included. Six-way power accessory plug can be used as a convenient power source for aftermarket accessories. Rear body wiring with extra-long leads allows for custom routing. 175 amp mega fuse kit with 6 gauge charge cable to support a high output charging system and internally regulated alternator. Original-replacement connectors, terminals and lamp sockets. Headlight switch with 26 amp internal circuit breaker and new floor dimmer switch included. Dash harness includes a connector for the 69+ GM steering column connector. A mating connector and terminals are included for easy adaption to popular late model columns. Gauge cluster printed circuit board connector and terminals.

    • Custom Dash Insert For Mounting Your Holley 6.86", Holley 7", or Haltech IC7 Display Screen. Also Available in Blank for a Clean Mounting Plate for all other Aftermarket Gauges!

      • Fuel Injection Ready! Includes 2 piece neck design that simply connects with 2" ID rubber hose. Includes GPA series Internal fuel pump available from 190LPH-450LPH. Uses aftermarket 5 bolt fuel level sender with multiple Ohm range options to work with factory or aftermarket gauges. EFI style internal baffling with extra large 4.8 liter dual tube baffled fuel tray to prevent fuel pump starvation. Perfect for Pro-Touring, Autocross, or Road Racing Ride.
    • 1986-88 Chevy Monte Carlo RTX Instrument System

      $1,645.00
    • 1978- 88 Chevy Monte Carlo HDX Instruments

      $1,545.00
    • 1978- 88 Chevy Monte Carlo, 1978- 87 Chevy El Camino, Malibu And Caballero VHX Instrument System

      $925.00

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