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Old 11-21-2015, 03:19 PM   #16
davepl
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Join Date: Aug 2006
Location: Redmond, WA
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Re: Proportioning Vavle for Disc Brake Conversion on a 1970 GMC C-20

Quote:
Originally Posted by 67chevemall View Post
Stomp on the brakes and see what happens...should slide straight
Actually that's not the point - even if it was way out of adjustment if you lock up all four, you're past the point of this anyway.

It's when the rears lock up during threshold braking; if they lock up too early, you'll bring the rear end around. Too late, they're not doing their share of the work.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought
1969 Pontiac 2+2 427/390 4-speed Coupe
1969 Pontiac 2+2 427/390 4-speed Convertible
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