Whether you call it a GMT400, Chevy OBS, Silverado or Sierra, we have you covered. Looking to LS or LT swap your 88-98 OBS Chevy or GMC truck? 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, Accessory Brackets, Oil Pans, ETC. Clink on the Links below for all of the items proven to work with your OBS Truck.
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.
Choose Engine Year for your Wiring Needs!
Are you doing a GEN IV LS or GEN V LT Swap on your 73-87 Squarebody Truck or 88-98 OBS Truck? Your gonna need to get rid of the old Cable driven pedal and go to an electronic pedal. We have made that easy for you with out Pedal bracket. This bracket uses the factory mounting holes on your truck and allows you to bolt in your Corvette pedal for a clean OEM look. This bracket only works with the Corvette style pedal (Available from PSI as Part# ACC-1007). Mounting Hardware included. Pedal sold separately
The C10 Swap pedal is a direct bolt in pedal for the 67-72 C10, 73-87 Squarebody, & 88-98 OBS GM trucks for use with GEN III only Drive by Wire Applications
Other Compatible Swap Parts
- Fan Relay Kit - KIT-1010
Other Engine And Accessory Mounts
Bolt in an Independent Rear Suspension (IRS), Limited Slip, and 14 inch Brembo Brakes to have the baddest Chevy OBS on the Block. Use our PSI brackets to bolt in a rear subframe from a 2010-2015 5Th Gen Camaro IRS. Complete Camaro subframes are readily available at wrecking yards, for less than the cost of rebuilding your stock differential and adding disc brakes. The brackets allow the use of the all the stock Camaro mounting points for the suspension links and rear sway bar. The brackets are designed to use a Coil-Over, such as one from Ridetech, QA1 etc, for a 5th Generation Camaro. The stock spring and shock from the Camaro is not used.
Brackets will come Black Powdercoated ready to bolt in. Simply cut a C-Notch into each frame rail and drill several new holes using the brackets as a guide. Your stock leaf springs and perches should be removed to save weight.
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!
A Great Fit For OBS Truck Radiators
An industry exclusive solution for mounting SPAL's 300 or 500-watt brushless fans to nearly any radiator. Injection molded from a heat resistant space age polymer offering decades of performance and durability. Easily trimmable to fit most applications and offers full coverage on core sizes between 22.5" to 27.5" wide. A “Direct Fit®” on all models built with hat channel side supports. Includes all mounting hardware and flaps.
The new SPAL brushless fans are ideal for engine and oil cooling, HVAC, and auxiliary cooling applications. These new fans were developed and designed with cutting edge technology, high energy ferrite magnets, and a state-of-the-art sine wave sensorless drive. These motors reach more than 82% electrical efficiency, placing our 300W and 500W power range products among the most efficient motors available anywhere. The result is high air-side performance at minimum electrical load. SBL motors are fully sealed to be IP68 and IP6K9K compliant and can operate in the presence of many aggressive or hazardous substances.
Available in Blue, Red, Black, Tan, & Grey
Other Restoration Parts
Provides maximum clearance to the engine crossmember. Cast and machined aluminum
INCLUDES: Sump baffle, OE style pick-up tube, sump plug, oil filter stud, oil passage cover, etc.
Other Swap Parts
has been added successfully to your wishlist.×
Looking for an Affordable, In Stock, Plug and Play wiring harness for your LS Swap? PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. All PSI Harnesses are Made in the USA. In addition to wiring harnesses, PSI carries Holley Products, Vintage Air A/C, Dakota Digital Gauges, HPTuners and PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion needs!
has been added successfully to your wishlist.×