power brake booster

[Lt.Del]

Yeah, i noticed that after looking at the numbers.  The salesman didnt know the difference.  Of course, this was my first time doing it.  Apparanently there is a booster for JB3 and for JB5 brakes.  I think the JB5 was for the 2 3/4" rear brakes.

Two boosters

And wouldn't you know, I received the 5471108 part for two inch wide rear brakes.  A 50 / 50 shot and the guy got it wrong.   Live and Learn.  This isn't exactly my specialty.


Oh well.  Did I mention earlier that they work great?!?

It'll do for now.  I don't think there is more power assist one way or the other.

SgtDel
aka "Andy"

www.delbridge.net

1979 Big 10 383 stroker
1991 Blu 'Burb 3/4 ton 4x4

Edited by: SgtDel  at: 3/27/07 9:45 pm

[80stepsideguy]

Heres a good question for some.I got a 85 cab that has a tandem diaphram booster on it but my 1980 had a single diaphram booster on it.I am going back to the 80 style truck setup but whats better for the tandem or the single?I kept the booster setup from the 80 cab i junked but if the tandem is better i`ll use it.
thanks
pat

[VileZambonie]

Tandem is for heavy duty brakes.

[77c15]

If any of you guys have taken a look at the last page of my cardomain site, then you notices with the front end tore apart that I don't even have a power booster. Could I possibly put one on? Which one? I'd love to have power brakes, I just don't know which one will work. I think the holes are already there, just not sure what will bolt up. It's a 74. And by the way, Del, sorry the check valve was no help but at least you had one for the new booster or at least a spare. You never know when rubbers gonna fail.

www.cardomain.com/ride/788720/10

bottom pix on this page are good shots of the almost bare firewall. let me know what you guys think about how I can go about adding power brakes.

[VileZambonie]

Easy enough to do. Install the master and booster. The correct combination valve. Hook up the booster to manifold vacuum source and bleed the brakes.  

[Lt.Del]

I like the way the six bolts are set up that keeps the booster on.  You may wanna find some of those from a donor vehicle from the slavage yard, along with the other parts you'll need.

Those bolts, you'll see from my second pic on my first post, go through the firewall from the inside and are secure.  It's better than the bolts spinning around--you can't be on both sides of the firewall at one time to tighten up the booster.

BTW, don't worry about the check valve advice.  It was only $8.  The new booster comes with the booster rod and check valve if you are interested in gettng one.  

SgtDel
aka "Andy"

www.delbridge.net

1979 Big 10 383 stroker
1991 Blu 'Burb 3/4 ton 4x4