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. IRS from a Pontiac G8, Caprice PPV, or Chevy SS can also be used as they are nearly identical to the Camaro.
APPLICATION: The PSI IRS kits are designed to be a bolt-in option for regular cab, short bed OBS trucks from the following years: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, & 1998. PSI has not tested or installed the IRS kit in any other vehicle or OBS truck (long bed, ext cab, etc), however we do have customer that had modified this kit and used them in both newer NBS GMT-800 trucks as well as older C10s. They will not bolt in to any vehicle aside from a 1988-98 single cab short bed OBS truck without modification.
Brackets will come black powder coated ready to bolt in. Simply cut a C-Notch into each frame rail and drill new holes using the brackets as a guide. Your stock leaf springs and perches should be removed to save weight.
COIL-OVERS: The brackets are designed to use a Coil-Over, such as one from VIKING, RIDETECH, QA1, Summit, etc, for a 5th Generation Camaro. The stock spring and shock from the Camaro is not used. We used a RIDETECH 12 inch ride height coilover with a 3.6" stroke, and a 500 lb 8" spring, but you can use the coilover of your choice. The coilover should have an eyelet on the top for the PSI bracket, and an eyelet at the bottom for the Camaro Rear Lower Trailing Arm.
DROP HEIGHT: How much does it drop your truck? The drop depends on where your truck sat originally, mainly based on your suspension package and tire size. To properly measure your drop, measure from the center of the axle (hub) to the wheel opening. The drop can be anywhere from 4in to 7+ inches of drop. Our shop truck, Project TanLines measures 14 inches from the center of the axle to the top of the wheel well.
WHEELS: Wheel sizing we found is best to base off of 5th Gen Camaro rear wheel specs. We have run 19x12 ET41 wheels, 18x11 ET35 wheels, and take off wheels from a 6th Gen Camaro.
Camaro IRS Width is 67.5 inch, 2wd C1500 is 65 inch, 4wd C1500 is 68 inches.
Requires a 3 Bolt Differential to U-Joint adapter such as Sonnax T35-GMFD-01K or (DANA 3-2-119 and GForce CAM10200R)
Add an adapter to mate a 1350 U-Joint Yoke to your 3 Bolt Differential
GAS TANK: Your stock gas tank will not work, without denting the rear corner for clearance. An S10 crew cab gas tank will not work without denting the front top corner for cab clearance. For weight balance we used a Mustang gas tank between the frame rails.
PSI Cannot be held liable for parts used in any manner other than originally intended. Vehicles used in competition, off road or show are exempt from all warranties. This part is not DOT approved or Trail-Rated.
Will not work on 2 door Tahoe models.
Thanks to Hawks Motorsports, we are offering the Camaro rear subframes as an add-on option that will dropship directly to the customer. These rear subframes come complete with rear cradle, differential (3.27, 3.45, or 3.91 ratios), brembo calipers, rotors, axle, hubs, sway bar, control arms, and bushings. These subframes/diffs will come guaranteed working in great condition from Hawks.
NOTE: Subframes will ship separately. Shipping price will be calculated AFTER SALE and we will reach out to the customer for shipping payment.
As Heard on the OBS Talk Podcast, click here to listen.
