Southwest Speed 1963-72 Chevy Truck Trailing Arm Installation Guide

September 23, 2024
Southwest Speed

Southwest Speed 1963-72 Chevy Truck Trailing Arm Installation

Parts List:

  • 1 ea Cross Member
  • 2 ea Anti-Squat Brackets
  • 2 ea 3/4-10 x 4.5 “GR” Bolts
  • 2 ea 3/4-1 O Look Nuts
  • 2 ea 3/4 Flat Washers
  • 8 ea 1/2-1,3 x 1-1/2″ GR.8 Bolts
  • 8 ea 1/2-13 Lock Nuts
  • 8 ea 1/2 Flat Washers
  • 12 ea 3/8″-16 x 1-1/4 GR8 Bolls
  • 12 ea 3/8-16 Lock Nuts
  • 12 ea 3/8 Flat washers

Installation Instructions:

  1. Disconnect parking brake cable, from cross member.
  2. Remove drive shaft.
  3. Remove the trailing arms from the cross member,
  4. Remove the 14 rivets that secure the cross member to the frame. (save the bushings for reinstallation of trailing arms)
  5. Rotate and remove the cross member from the frame.
  6. Install the new cross member in the frame. (make sure mounts are arranged as in the picture)
  7. Attach new cross, member to frame with supplied hardware.
  8. Reinstall trailing arms using original bushings and new supplied hardware.
  9. Reinstall drive shaft.
  10. Reinstall the parking brake cables routing them through the new cross member
  11. Make sure to test the parking brake, cables. Some adjustments may be required
  12. Double check all hardware to make sure it has been torqued to the proper specifications.

Helpful Installation Tip

The frame width at the cross member is 34.5″ wide. When the original cross member is removed, the frame will spring out. If possible, weld a piece of scrap metal across the frame to keep it in place during removal of  cross member. If this is not an option, you may need to use a ratchet strap to pull the frame rails back into place in order to install your new cross member properly.

TORQUE SPECIFICATIONS

Normal Torque for Tightening Stud Nuts and Bolts Stud Nuts and Bolt Tightening Torque.

DIAMETER IN.LBS FT.LBS
1/4 55-85 4.5-7
5/16 110-165 9-14
3/8 190-285 16-24
7/16 295-445 25-37
1/2 450-680 38-57
9/16 640-970 53-81
5/8 880-1300 73-110

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