62-67 Chevy II/Nova, Power Brake Booster Kit

January 20th, 2009


NOTE: Booster may differ from picture, depending on the type of booster options you have chosen.

STEPS: Read these instructions carefully!
IMPORTANT: This kit is assembled for shipping purposes only! Be sure to check all nuts and bolts for adequate torque prior to use. Don’t forget!

  1. Remove original master cylinder, pedal clevis and hard lines.
  2. Remove master cylinder from power booster as you will need to bench bleed it prior to bleeding the system. Inexpensive bleeder kits are available at any auto parts store for minimal cost. We also sell a bleeder kit. Install your pedal clevis onto booster. NOTE: Booster pushrod may need to be trimmed to fit.
  3. The original studs that mounted the master cylinder to the firewall will need to be removed as to allow the power booster to mount. You will find that there is a plastic plug in the firewall, this needs to be removed. Beneath the opening where the plastic plug was, there is a dimple in the firewall that needs to be drilled out with a 3/8” drill bit to allow the booster stud to go through. Install the booster.
  4. There should be two pedal clevis holes in the brake pedal (If not, you will need to drill a 3/8” hole, 1” lower than the original clevis hole in pedal). Mount the clevis into the lower hole and check for proper adjustment by making sure the brake pedal is all the way up and no pressure is being applied to the booster. Be sure to tighten the clevis jam nut.
  5. Mount your bench bled master cylinder to the power booster. Connect all appropriate hard lines and bleed the system. NOTE: ON GM MASTER CYLINDERS, THE FRONT PORT IS FOR THE FRONT BRAKES AND THE REAR PORT IS FOR THE REAR BRAKES.
  6. If you are running disc brakes be sure to have the proper proportioning valve kit for your application.
  7. Double check all of your work and proceed to check the system for any leaks.
  8. Be sure to hook up your vacuum line to the appropriate port on the manifold.


  1. We highly recommend that you perform a vacuum check on your particular engine. Acceptable vacuum numbers would be from 15in/hg to 22in/hg. For those who have lower numbers we offer a vacuum pump. Call for details.
  2. We also offer disc brake master cylinders and proportioning valves for those who do not want to run power brakes. Call for details.


4 Responses

  1. Chris Shanahan says:

    Can I purchase just the master cylinder and and undermount porportioning valve and lines shown above (part # BB-C6267)? I don’t need the power booster.

  2. Luther says:

    Is ther a gasket or some sort of sealer required between the 1963 Chevy II power brake booster and the fire wall?


    • pol says:

      Typically you want to run some sort of gasket. However most don’t. You can simply use one of 2 types of gaskets for this application. There is standard gasket material that will work just fine, or you can run the thin heavy dense foam material. Either work well and are readily available.

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