Bolt Full Float Disc Brake Bracket Kit
bracket kit makes it easy for you to eliminate the factory drum
brakes from your Corporate 14 bolt full float rear. What does
this do for you?
- Drop 50 pounds or more of weight from the rear axle
- Discs are self cleaning and durable in offroad conditions, no
more worn out drums from running in mud sand or silt.
- Cheap and easy service of brake pads compared to the stock
- Cheaper and easier to install than rebuilding the stock
kit includes the caliper mounts, spacers and hardware that bolt
to the factory 4 bolt brake backing plate flange on the stock
Optional 16" braided stainless brake lines
for use with our disc brake kit:
#GU30111 - 16" braided stainless brake lines
with 10 mm Banjo Bolt - $69.00
16" braided stainless brake lines
with 7/16" Banjo Bolt -
long braided stainless brake lines
for use with our disc brake kit, one 28" and one 36" line,
attaches to junction block on diff cover and runs all the way to
stainless brake lines with 10 mm Banjo Bolt - $89.00
stainless brake lines with 7/16" Banjo Bolt - $89.00
#GU6102 - Long studs for 14 bolt,
many 3/4T 14 bolts will have a wheel stud that's too short when
used with the disc kit and some thicker center wheels,
especially aluminum ones, may need longer studs -
installation is shown below:
To complete the kit, the customer will need to supply the brake
rotors from a '73-'87 GM 3/4T front axle and calipers from a
'73-'87 1/2 or 3/4T front.
the axleshaft and wheel bearing adjusting nut and remove wheel
hub and drum assembly from the axle housing.
Remove the 4 bolts that hold the factory drum backing plate to
the axle housing and remove the backing plate.
Bolt the new caliper mounting bracket to the housing with the
spacers between the bracket and housing flange. Bracket should
point approximately 45 degrees up at the rear of the housing.
Press the studs from the hub/drum assembly and pull the wheel
hub from the center of the drum. A hammer and a soft drift will
work to remove the studs also.
Place the disc brake rotor behind the wheel hub and drive the
studs through the rotor and into the wheel hub.
Reinstall the hub/disc assembly on the axle housing and replace
Place the caliper in the mounting bracket with the bleeder screw
facing up and plumb the brakeline to the caliper. You must
use a flexible line between the housing and caliper since the
caliper will float as the pads wear. Our braided line kit
is shown in the picture above, it provides enough length to
allow easy removal of the caliper for service.
Bleed the brakes and you're ready to go.
brake rotors have small pockets machined into the back of the
rotor for the head of the stud to seat into. If the stud head
will not fit into the rotor pocket, they can be ground to fit or
turned on a lathe to fit. Not all rotors are machined the same
so you may or may not have this problem.
works with any single wheel GM Corporate 14 bolt full float axle
with the drum secured BEHIND the wheel bearing hubs. This kit
does not work if your drums slip off from the outside or with
dual wheel axles.
Many 3/4T 14
bolts will have a wheel stud that's too short when used with the
disc kit and some thicker center wheels. Most 1-ton axles have a
longer wheel stud that's generally fine. If your studs are too short, use a 14 bolt
dually stud and you'll have plenty of thread.
applications will require an adjustable proportioning valve to
turn down the rear braking power to avoid rear brake lockup.
Swapping to a larger front caliper will help this situation
GM used a
larger piston front caliper in the heavy duty brake option or
high GVW 3/4T trucks. This
caliper bolts in just the same as the standard 1/2 and 3/4T
category you would like more information on.