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Old 03-07-2007, 05:30 AM
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1981 Camaro M/C question

The 1981 Camaro has a master cylinder exclusive for that year only.
At least it appears that way when I study the stock numbers.
The earlier ones have the old cast style. The later ones have master cylinders with the same look as the 1981 model, but different stock numbers.



After browsing the third gen forum a while I've been told all master cylinders for 1982 and later Camaros can be used on both disc disc and disc drum brake setups. They just change the fluid amount to the rear brakes with disc-disc or disc-drum proportional combination valves.



Does any of you know if that's the same for the 1981 M/C as well?
It looks very much like the later M/C's. Are there any way I can find this out just by inspecting the 1981 M/C?

Does the 1981 Camaro have proposition combination valve at all? If not that means this M/C will not work on a disc disc set up.

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Last edited by staleg; 03-07-2007 at 06:53 AM.
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Old 03-07-2007, 06:47 AM
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Quote:
Originally Posted by staleg
Does the 1981 Camaro have proposition valve at all? If not that means this M/C will not work on a disc disc set up.
I do believe the '81 Camaros have proportioning valves.

Where exactly are you going with this?

Are you putting disc brakes in an f-body & need a master cylinder? If so, I do believe the 2nd gen Pontiac Trans Ams had disc brake rears. You can also get aftermarket setups that will run disc/disc.

EDIT: I just read your project journal. That explains your question. Nice project!
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Old 03-07-2007, 07:06 AM
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Thank you for your answer Big Mouse.
It is for my project, yes. And if those Camaros do have the combination valve, that might mean the M/C itself don't work on its own against a disc drum set up which is good news for me.

I got a brand new 81 Camaro M/C very cheap. It is just the way I want it: 1,125" bore and plastic reservoar who makes it easy to inspect the fluid level. I will have to level it a bit upward because of the shape of the reservoar, but that's not a problem.

If it turns out to be impossible to use on a disc disc set up I will buy a later version that for sure can handle a disc disc setup.

My next question will be if it fits on those "standard aftermarked" street rod boosters or not.

Last edited by staleg; 03-07-2007 at 07:13 AM.
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Old 03-07-2007, 07:51 AM
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I would suggest you go talk to the 2nd generation Camaro (1970 to 1981) guys over here: http://www.nastyz28.com/forum/index.php In their forums they have a section for suspension & brakes. Look in there...

Do some reading in their archives & I'll bet you'll find your answers
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