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Brakes

Installing an Updated Duel Chambered Master Cylinder

Thursday, August 16th, 2012

Warning:  When installing an updated duel chambered master cylinder under the floor of an older GM truck, a brake line modification may be necessary.

It is not acceptable to allow the modified brake line to touch or be very close to the exhaust pipe.  During long trips, the exhaust heat can cause a rise in the brake fluid temperature to near boiling level.  Modern master cylinders do not have a vented cap to release line pressure so fluid will be forced out through wheel cylinders.  The early single chambered caps are vented to prevent this.

Check your brake lines on non-original trucks.  Do not allow a safer system to leave you without brakes.

Brake Cable

Thursday, February 11th, 2010

The common practice of replacing the original differential with a newer high speed assembly usually brings up another question: How do I connect the late model brake cable to the original brake system?

As the ends of most GM cables terminate with a steel ball, they can easily attach to a brake line connector as used on later GM vehicles. See photo. The other end of this connector attaches to a threaded 1/4″ hook found at your local hardware store. A nut on the brake’s shaft can be adjusted to eliminate excess looseness in the cable when the brake is not being used. This easy attachment will give years of dependable service!

brake cable 1