14 Bolt Full Float Disc Brake Bracket Kit

This 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 setup.

- Cheaper and easier to install than rebuilding the stock brakes.

Kit price: $150.00  Call 970-945-7777
Optional 16" braided stainless brakelines: $65.00 (customer must specify 10mm or 7/16" banjo bolt)

Our bracket kit includes the caliper mounts, spacers and hardware that bolt to the factory 4 bolt brake backing plate flange on the stock housing.
 

A complete installation is shown below:

NOTE:  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.

Installation overview:

Remove the axleshaft and wheelbearing 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 the axleshaft.

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.

Notes:

Some 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.

This kit 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.

Most 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 also.

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 calipers.

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