88-97 Chevy/GMC 3" Bolt-On SAS Hanger Kit (31.5" Spring Center) for GMT 400 Chassis

Description:

STOP!!!!!!! READ THIS BEFORE YOU CALL OR EMAIL ABOUT APPLICATION!!!!!

Measure your inner frame width. There are multiple variations of frame width and this kit specifically only fits one --39.5"-- (diagram is located in the images section) If you don't have this frame width, this kit will not fit your application.

Application:

Truck:

This kit is designed specifically for 88-97 Chevy/GMC trucks and SUVs on the GMT 400 chassis, fitting a 39.5" Chevy frame. To determine compatibility, please refer to the provided image for measurement instructions. On average, standard 88-97 trucks range from 1/2 ton to 1 ton and are approximately 39.5 inches wide.

Axle: This SAS hanger kit is designed to fit Chevy Dana 44 or Dana 60 axles, as well as 78-79 Ford Dana 44 or Dana 60 axles, all with a 31.5 inch spring center pin measurement. A corporate 10 bolt axle can also be used with this kit. Please note that Reid Racing 4 stud knuckles must be installed to complete the needed crossover conversion for proper installation.

Leaf Springs: Uses either 47" square body (73-88) Chevy or 52" aftermarket leaf springs with the flip of the bracket noted in instructions.

Included:

• 1 front spring hanger
  
• 1 passenger side rear shackle bracket
• 1 driver side rear shackle bracket
• 2 heavy duty shackles
• 1 grade 8 hardware pack

Watch the installation videos on our YouTube Channel, @skysoffroaddesign

Installation:

 CLICK HERE FOR INSTRUCTIONS

 1. Block the rear wheels, raise the front end of the vehicle and support the frame with jack stands behind the front wheels. 2. Remove all front suspension components including, brake calipers, rubber brake lines, steering assembly, sway bar (retain sway bar brackets), shocks and front drive shaft. Remove upper and lower A-arms and front differential (refer to the service manual for a more complete description of suspension component removal). Remove front tow hooks (retain tow hook backing plate and bolts). Leave steering box attached. 3. Locate the passenger side rear lower control-arm mounting bracket. Using a die grinder or plasma cutter, cut off lower portion of factory bracket flush with bottom of frame and grind frame smooth. Depending on your plan for shocks, DO NOT remove factory shock mount bracket as these can be used to mount front shock hoops. 4. Locate the front spring hanger bracket (SAS001-1). Slide it under the front frame rails aligning the bracket with the factory holes under the frame rails. Attach front spring hanger using factory tow hook backing plates and bolts. Use Loctite and torque to specification. For 52” springs mount the spring hanger the opposite way (so the spring mounting point is farther forward). On some 2500 and 3500 models the tow hooks holes will not align with the front crossmember; if this is the case, bolt on the front cross-member using the side ear tabs, and then mark and drill new ½” holes. 5. Locate the Passenger side rear shackle bracket (SAS001-2) and hold it up inside the frame rail flush with the top of frame. Measure from center of front spring hanger bolt back to the rear shackle pivot bolt hole 46-1/2” and clamp in place. 6. Repeat step 5 for the drivers side rear shackle bracket (SAS001-3). The long slot on the bracket should align with the manual transmission shift linkage. 7. Once the passenger’s and driver’s side rear shackle brackets are properly located on the frame, Drill the ½” mounting holes. Install ½” x 1.25” hex bolts and washers. Torque to specification. 8. Install rear spring shackles (SAS001-6) into the rear shackle brackets using 9/16” x 4½” bolt and locknut. Install new front leaf springs (NOT SUPPLIED IN KIT) into front spring hanger and rear shackles using 9/16” x 4½” bolts, nuts without washers. Recommended springs: 73-87 Chevy Front springs with 88-91 bushing and sleeve kit. 9. Strip the front axle housing of all factory shock and sway bar mounts. On Ford Dana axles, you will need to grind a notch in the casting for the drivers side inner U-bolt to sit in. Half the depth of the U-bolt will be adequate. 10. Install front axle assembly to leaf springs (NOT SUPPLIED IN KIT) using the new U-bolts plates Shock mounts on the spring plates should face down.