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'88-'98 G.M. 10 & 14 Bolt H.D. Semi Floating Short Axle kit includes: New
Vented Rotors, Brackets, Grade 8 Bolts, Grade 8 Lock Washers
Link for info on ABS
2620S $249.95
 Link for Info on Calipers, Flex Lines Etc.
Additional Parts (Needed to complete installation)
 | Part No. 3100 New (Not
Rebuilt) Calipers without parking brakes $120.00 pair |
| Part No. 3110 New (Not
Rebuilt) Calipers with parking brakes $300.00 pair
 | Part No. 3111 Short Cable Extensions $20.00 pair |
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| Part No. 3700 Rubber hose 9 1/2" $50.00 pair |
| -OR- |
| Part No. 3702-8 Braided Stainless hose 8" $50.00 pair |
Installation Instructions
GM 10 & 14 Bolt 5 & 6 Lug Rear Disc Kit
Short Axle
Parts List
(2) New Vented Rotors
(2) Caliper Brackets
(2) 1/4 Inch Spacers
(8) 1/2 - 20 X 1 1/2 Grade 8 Hex Bolts
(8) 1/2 Lock Washers
Installation Instructions
Pinch off the rubber line between the frame and axle. This will keep the
fluid in the lines and make it easier when you bleed the system.
- Remove the axles and then the backing plates.
- Install the caliper brackets to the outside surface of the housing. (1/4
spacers between the housing and caliper bracket.)
- Reinstall the axles.
- Install the rotors on the studs and hold in place by the wheel nuts, check
the rotors for any wobble. Under .010 would work o.k.
- WARNING: The axles are the same size or slightly larger than inside the
rotors. Grind the axles down by turning the axles with the motor and grinding
the turning axle with a grinder. The rotors will crack if they are forced on
with the lug nuts and there isn’t clearance.
- Install the 78 - 83 Monte Carlo front calipers or 79 - 85 Eldorado rear
calipers with emergency levers, using the long GM screws. Grind off any
projections on the calipers that might hit the bracket.
- Gravity bleeding is needed if you use rear calipers. Take the caliper off
of the bracket but leave the flex hose connected. Hold the caliper with the
two mounting ears straight above each other. Open the bleed screw & move the
caliper around while the fluid dribbles out (don't push the pedal) do
both sides a couple of times. Reinstall the caliper, lock up the park brakes &
try the pedal.
- An adjustable proportioning valve will probably be needed in the line
going to the rear brakes because you now have more rear brakes than you had
before. You can convert from metric to U.S. brake lines by using 3/16 U.S.
steel brake line, cut off one end, slip on a metric brake end and re-flare.
- If you have a spongy pedal and bench bleeding the master cylinder and a
thorough bleeding of the system does not cure the problem, read through the
troubleshooting sheet.
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