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Old 05-07-2017, 10:32 AM   #249
70custom20
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Join Date: Dec 2007
Location: Quakertown Pa.
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Re: Power Brake Booster Adapter Bracket

Quote:
Originally Posted by Captainfab View Post
I don't have the dimensions of my booster brackets handy. I am at home now and all of the parts I fabricate are at my shop. I can get you some measurements tomorrow.

The S10's had an optional dual diaphram booster that is aproximately 9" in diameter. It is identified with the RPO code of JM3 or JM5. This booster is similar to the '67-'70 C20/30 boosters.

The diameter of the compatable boosters varies by application. I do not have a listing of those measurements.

The distance the booster is from the firewall has absolutely no bearing on the leverage applied by the brake pedal
I was just reading through some of this thread. I bought one of the brackets a while ago, I'm just looking at whether or not I wanna use a vacuum booster, or switch over to hydro boost. If I'm reading the above quote correctly, the dual vacuum booster for the S10 trucks was optional, not every booster on those trucks was dual? Thanks.
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