Hey guys, I am new here and just getting me feet wet. Got a question. I have an 82 camaro z28 with a rearend assembly out of a 95 z28. Came with the disk brakes. So i had the guys I bought it from give me the brake booster as well.

Ok, I am leaning towards the SSBC adjustable proportioning valve that would replace my stock valve. I believe this will get my rear brakes firing correcting and not running off pressure designed for my old drum brakes. I would welcome any other suggestions for proportioning.

Main question. My 82 booster or the 95 booster? I have been looking around. I believe my 82 booster is a 1.25" bore while the 95 is a 1". The original 82 is in the car now with the original proportioning valve. It works, but I am not pushing it hard at all. I want to be able to push it and have all 4 disk work as designed. I don't know that much about this so please... share your thoughts.

Stock front disk... looking to upgrade those at some point too... Greatly appreciate any help.

355 carb t56 (out of same 95) I don't think it is needed but so you know.

 

you mean the master, not the booster.

the lt1 master, from 93-97 cars has different threads that the later 3rd gens with metric lines. the ls1 masters, 98-02 have the same threads and are a more common swap.

your 82 has SAE threads, so you are going to have te reflare lines and change fittings. but it sounds like you are prepared for this since you are looking at a aftermarket prop valve.

Some people have reported increased pedal effort after installing the newer smaller bore ls1 masters, I have them on both my cars and there is a slight change in effort, but its not enough to bother me.

 

Ahh, your right, I did mean master, even when I was typing it didn't sound right... So what would be the point in the upgrade? Would the 98-02 perform better? Meaning, is it worth changing to one? I understand I am going to need one adapter to get the proportioning valve in (according to guys at SSBC) One of my lines is smaller. Not really sure why. Nonetheless, if you could help me understand the results. Why would I go from my 82 to a 98-02?

I read the smaller diameter means more pressure but less volume... and obviously vise versa. Doesn't really help me understand what I should get.

Thanks a lot for your help. I did not know about the threads.

 

There is info about masters, combination valves (especially the old cast iron SAE valves), parking brake cables and brakes in the following link that you might find interesting:

https://www.thirdgen.org/forums/tran...-10-bolts.html

JamesC

 

I saw this but I didn't read far enough. Thanks. I am reading through it now. A ton of great information!

 

I just looked and realized you put that post together, Really awesome writeup. That is a ton of info and perfect for what I am doing.

Can I ask you what you would do. Stick with my '82 master, or look for a "98+ as recommended above? Thanks a lot!

 

I stuck with the OE master for my PBR swap and am well satisfied with that choice (whether that's a recommendation or not I'm unsure). That said, I have no experience with the LT1/LS1 master swap.

JamesC

 

That was my thought. I think I will start there... if I am not satisfied I will start looking for a 98. I just wanted to make this decision before I swapped in the valve. Thanks for all the help. Will make the swap soon!

 

i used the later 98-02 ones because they look better..... probably not the best way to chose parts though....

also figured since they came on cars that offered pretty much the same brakes that i have currently on the car, it would be more proper than the stock 3rd gen one.

 

I run a LS1 master (98-02) and have 02 2wd blazer rear disks on my 83. I have the same SAE threads you do. I used the blazer rear brakes and lines because they have SAE threads and not metric ones like the F-bodys do.

As far as the master, I went to my local NAPA and got adapter fittings that went from my SAE threads to the metric ones on the master.

As far as a prop valve, I run a wilwood unit that replaced the cast iron unit (bolts right to the factory bracket) that came in our cars. The front brake line threads were the same and I got an adapter for the larger rear lines.

 

Got it, so same question for ya, why did you go with the LS1 master instead of the stock one? Is it better in some way? Your proportioning valve... is it PN: 260-11179? This is the adjustable valve. That is the other one I as looking at instead of the SSBC unit. I might go with this one then. I do believe I will have to get one adapter to mount this. Thanks for your help. If you have a picture of your can you post it? Thanks,

 

There are pictures of the master, hydro boost, prop valve, front LS1 conversion, and rear blazer conversion in my build thread.

https://www.thirdgen.org/forums/hist...gh-school.html

I chose the LS1 master for two reasons. One is that it fits my hydro boost and the factory 3rd gen ones do not. Second the master was designed to work with my front brakes and the rear blazer calipers are nearly identical to LS1 rears (piston size). So I knew there would be no compatability issues.

The proportioning valve you listed is the exact one I have. It works great. I made some custom upper lines with adapters into the master and rebent the lower lines to fit the prop valve. Then I got an adapter for the large rear brake line to the smaller port on the prop valve.