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Old 07-21-2015, 10:34 PM   #9
Keith Seymore
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Join Date: May 2009
Location: Motor City
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Re: Brake Proportioning valve Question

Quote:
Originally Posted by colgad View Post
I have never heard of the front bowl of the master cylinder being for the rear brakes on any GM car or Truck.

Please show us where you found that information.
I used to be a brake engineer for GM Truck; we do it all the time.

Normally it's due to packaging constraints, putting the smaller rear brake reservoir in front for clearance to a sloping hood.

See Astro/Safari van. My 74 Chevelle is that way, too.

Also - some designs prefer the primary piston in the master cylinder to engage first, which places it at the rear of the master cylinder. This primary system feeds the front brakes since most of the braking is done with the front.

K
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Last edited by Keith Seymore; 07-21-2015 at 10:46 PM.
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