Hotchkis 80390 TVS System, Stage 1, 67-72 C-10 Small Block, 4'-6' Drop, 2WD - Manual (Page 87)

5
Reinstall the Trailing Arms
The Hotchkis trailing arm brackets have 4 holes to choose from. The lowest hole is
the same as the original. As you move up in holes, the angle of the trailing
increases by 1°. The higher the hole used, the more anti-squat you will get. You
may want to experiment with different holes to determine the best setup for your
truck. As a default you can install the trailing arm in the lowest hole.
You Hotchkis kit utilize spacer washers to give the trailing arm some room to
articulate. Install 1 spacer on each side of the trailing arm. So each arm will
have 2 spacers used total. Install the new hardware. Fasten the large bolts, but
do not fully tighten at this time. You do not want to preload the bushings!