| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,048 Posts1,055,664 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Apr 2003 Posts: 27 Apprentice | | Apprentice Joined: Apr 2003 Posts: 27 | are proportioning valves needed when installing disc brake kits on a 50 chevy 3100 using a manual disc brake master cylinder? discs on front and stock hucks in the rear. --- much oblige.
rrf
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | Yes, they are required. Check out this web page. | | | | | Joined: Jun 2004 Posts: 336 Member | | Member Joined: Jun 2004 Posts: 336 | Good web page, Cletis. I used a stock combination valve out of a 1980 pickup that had discs in the front / drums in the rear.
Gord
1954 1/2 ton 235 4 speed
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | Cletis,
that is a very good link, thanks. A few months back, there was a multi issue article on brakes, in Classic Trucks or Custom Classic Trucks, where the guy stated that the 10 psi valves were to hold the shoes against the drum!!! I knew that he was out to lunch. The scary part is that there may be some rod builders out there that believe everything they read.
Fred | | | | | Joined: Feb 2000 Posts: 5,200 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,200 | Wheather you need them or not also depends on where the master cylinder is related to the wheel cylinders. On a small street rod, the wheel cylinders can be higher than the master cylinder and thus, the fluid runs out of the cylinders back to the master. The pressure valves or check valves hold pressure in the cylinders. 10 psi is not enough to hold the shoes out if you have good springs and hardware. Just use parts from a modern truck about the same weight and you should be fine. Joe | | |
|
|
| |
