Hotchkis 4001 1982-1992 Camaro-Firebird Sub Frame Connectors - Manual (Page 2)

3) Attach the rear of the connector to the trailing arm mount using existing
hardware, and then lift until the front contacts the floor of the car. Use a
marker to show where the front of the connector contacts the floor. With
connector held in place, mark the trailing arm mount around the outside of the
connector flange and as far as possible along the bottom of the flange (see
fig. 2).
Figure 2
4) Remove the connector and grind the areas marked on the car for welding. Be
sure to grind through all protective plating. Grind powder coating off of the
subframe connectors in areas to be welded.
5) Put the subframe connector in place and tighten the trailing arm bolt to a snug
fit. Tack weld the connector in several places at each end. Remove the rear
control arm and completely weld in the subframe connectors. When the area
has cooled, paint welds and any bare metal.
6) Install control arm and torque to 70 ft./lbs.
7) Install “Y” pipe, relocating air tube clamp forward (see fig. 1).
8) Proceed to driver’s side. Repeat steps 3 through 6. If necessary bend plate at
front of subframe connector to allow total contact with floor.