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-   -   71'-72' Master on 67'-68' booster ? (https://67-72chevytrucks.com/vboard/showthread.php?t=376790)

hotrod 80 12-17-2009 11:16 AM

71'-72' Master on 67'-68' booster ?
 
Will a 71'/72' disc brake master cylinder and proportioning valve mount and work properly in place of a 67' drum brake master and distribution block ? I have the disc master and the drum brake booster is on the truck . I am wanting to keep the factory booster .

71meangreenc10 12-17-2009 02:36 PM

Re: 71'-72' Master on 67'-68' booster ?
 
Are you changing the front to Disk? If so, it should work just fine. Some one chime in if I am in left field...The only difference I know is that the brake lines run different on the frame rails between those years and may need massaging to get to the Dis Block.

If your not running disks dont change it.

Smitty


Smitty

hotrod 80 12-18-2009 08:43 PM

Re: 71'-72' Master on 67'-68' booster ?
 
Quote:

Originally Posted by 71meangreenc10 (Post 3679659)
Are you changing the front to Disk? If so, it should work just fine. Some one chime in if I am in left field...The only difference I know is that the brake lines run different on the frame rails between those years and may need massaging to get to the Dis Block.

If your not running disks dont change it.

Smitty


Smitty

I am putting a 67' cab on a 72' swb 5 lug disc brake chassis and want to run the 72' master cylinder and prop valve on the 67' brake booster .

71meangreenc10 12-18-2009 09:20 PM

Re: 71'-72' Master on 67'-68' booster ?
 
The catalog shows two different part numbers for the boosters, maybe because of size, but there is a difference for some reason, I am not an engineer so I would say after finding out about the different sizes of boosters to call MP Brakes or a company that specializes in brakes to see if its safe. Thats the key,make sure its safe.

The way I read your post was that you were changing the whole system not splitting it(my fault). Why not just put a complete 72 setup on the 67?

Smitty

unclewatts 12-19-2009 12:56 AM

Re: 71'-72' Master on 67'-68' booster ?
 
If I was you I would forget that 67 booster and install a new or rebuilt 72 booster. Don't take a chance on safety with some old raggedy 67 booster. JMHO.

hotrod 80 12-19-2009 04:07 AM

Re: 71'-72' Master on 67'-68' booster ?
 
Well the master cylinder will be new , but either booster will be used . It is my understanding that even if the booster fails i will still have manual brakes .

STP67-72 12-20-2009 12:05 AM

Re: 71'-72' Master on 67'-68' booster ?
 
Hey Hotrod 80
The master cylinder and p- valve will work fine on the booster. Two different companies made the boosters. Bendix and Moraine ?? I think. I have used them on both through the years.

trenz68 12-20-2009 02:27 PM

Re: 71'-72' Master on 67'-68' booster ?
 
Same setup i did..cool


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