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Author Topic:   Stock Brakes
Dirt Forum Racer

Total posts: 88
posted December 07, 2002 06:37 PM
I'm building a car for a friend and he has to have a stock brake system. What master cylinder do I need so he can run without a vacuum booster?? It will have disks all the way around too.

Dirt Freak

Total posts: 353
posted December 07, 2002 08:31 PM
75 Vette.

Dirt Freak

Total posts: 273
posted December 07, 2002 11:00 PM
Use the one you've got! Just take the booster off and take the rod out of it and bolt the M?C back on. I learned that one right here on the forum! Don't believe me? Do what I did-go to the AutoZone and look up the pn for both a power boosted mc and a non power mc. You just might save yourself some $! You may want to change the porportioning valve tho-use one off a car with discs all around. I've heard there were some caddys with stock adjustable porportioning valves( internal spring change), but I don't know which ones. Maybe a trip to the pic-n-pay will solve that mystery.

Dirt Forum Racer

Total posts: 88
posted December 08, 2002 08:22 AM
I forgot to mention(If it matters) The car is a 76 Buick.

Dirt Full Roller

Total posts: 42
posted December 08, 2002 11:25 AM
The MC from a power unit normally has a 1-1/8" piston in it, the MC from a manual unit has a 1" piston. If you try to use the MC from a power unit you will have a really stiff brake pedal. A manual MC is pretty cheap at the parts store.

Dirt Full Roller

Total posts: 61
posted December 08, 2002 05:00 PM
I used the factory power master cylinder and
didn't have any trouble. I do remember having to bend the rod from the brake booster slightly to keep it from hitting the
edge of the master cylinder at full pedal.
Seems like I changed holes on the factory
brake pedal to help line it all up . I also
disconnected the REAR brakes from the pro-
portioning valve and ran a 5/16 line all the
way back to the rear end . Hope this helps.

redneck bubbas racing
Dirt Freak

Total posts: 213
posted December 09, 2002 10:22 PM
If you will move the brake rod to the top hole on the brake pedal arm your brakes will not be hard. It took me 2 seasons to learn about that. I know on metric cars it has 2 holes, if your car doesn't have the extra hole just drill a new one about an inch and a quarter higher. It works.

The Terlton Tornado
Dirt Newbie

Total posts: 1
posted December 24, 2002 09:30 AM
What 76 Buick has rear disk brakes?

Dirt Freak

Total posts: 273
posted December 24, 2002 07:42 PM
Well Tornado, yours does-after you install them! Find a Camaro or Firebird with stock discs and swap the rotors and calipers for the drum set-up you've got now! Should be a bolt-off, bolt-on swap.

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