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Old 04-23-2009, 11:09 PM   #15
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
Re: Impala SS Rear Disc Brake Brackets

Quote:
Originally Posted by SCOTI View Post
What do you recommend for the prop valve when adding the Impala rear discs?
Well not having completed an install myself, I can't make a recommendation from experience. However I do like the tuneability of having an adjustable valve on the rear line. There seems to be a few different combinations that work for those that are running 4 wheel discs. Some have good luck with the disc/drum prop valve and an adjustable for the rear. Some switch to a specific disc/disc prop valve with good results. And others use only an adjustable valve for the rear. I believe that the different bore sizes of master cylinders as well as the piston size of the calipers used plays a role in what works as valving in a given brake system.

With that said,as for the Impala rear brake conversion, I think I might recommend seriously looking at the components that GM used on the Impala for a start. Although the weight bias of a pickup is likely to be a bit different than an Impala. Also the weight bias from one pickup to another will be different in how the truck was built. This is mainly why I believe an adjustable proportion valve is beneficial to the brake system.

BTW Scot, how did that booster bracket work out for you?
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