I have stock front disc and a rear disc conversion from an early 70s Cadillac. The rear calipers used are exactly like our front ones on the stock set up. I thought this was a really cool bolt on disc set up when I found it years ago, but the master from the caddy would not work on our cars so I had to find another option. I have the stock power Skylark/GS power booster also. I had a master cylinder and power booster from a mid 80s camaro (with the big plastic cover) on it and the car stopped great, but now want to go back to a more stock looking set up. I tried a stock disc/drum master, but brakes are not working well. I have found a few suggestions in other posts - 69 corvette dual disc power master cylinder and also 77 corvette dual disc master cylinder but am not sure how easy those are to obtain or how much they cost. Just looking for any other suggestions for an easily attainable master cylinder that would work in this dual disc application that looks like a stock master cylinder so I can investigate all my options. Any suggestions? --------------------------------------- See most recent post...looking for opinions on going to a 1 inch bore master?
I bought my '76 corvette 4 wheel disc master cylinder from Autozone. I think it was around $36 + core.
Try this one from a 1980 T/A with 4 wheel discs $60 new http://www.oreillyauto.com/site/c/d...=Search_01292_1250738_1095&pt=01292&ppt=C0066 Reman $17.99 http://www.oreillyauto.com/site/c/d...=Search_01292_1250738_1095&pt=01292&ppt=C0066
I bought the 76 vette Disc/disc master before I read about the later model T/A. The TA looks much closer to our stock, but oh well. Maybe another time. The corvette is working well and brakes are good. $21 at autozone.
hi guys jumping in on this thread i purchased a mc from matt's classic bowties the chrome on with the flattop .v the problem i am having is with the front line going into the master is bottoming out before it's tight . i am having a problem finding a longer 5 /16 nut to remake the line .can somebody send me in the right direction. thanks todd
Resurrecting my own thread.... Since posting this I have upgraded all 4 calipers to the Wilwood d52 calipers. While my braking performance improved, I don't love the pedal feel. I have to use more effort than I would like to get results. I have verified my booster is working fine. I called wilwood and they suggested I modify my booster rod mount location the pedal has 1 inch more travel. Looking under our dash....this is not an easy option. Wondering about going with a new master cylinder. I am running a 1 1/8. What do you all think about going down to a 1 inch bore? I understand I may have a little more pedal travel but it should require less brake pedal pressure to make the same pressure. Maybe the one from CPP with the integrated proportioning valve?
True.....but I don't see how 1 inch more travel fixes my issue....seems like excessive pedal pressure is required to get brakes to perform. The pedal does not fall too much. Pedal travel is actually really good..... I am just trying to reduce the amount of pressure required but don't want to induce too much pedal travel with a 1 inch bore.
Real82it I would rethink buying anything from CPP. Most of their stuff has issues and their customer service and follow up are non-existent.
Disc brakes due require more pedal pressure, and going with a smaller bore piston in the master cylinder is a valid way to go. You just need to find the right MC. Have a look at some Corvette MC's.
Any suggestions on corvette year or what I should ask for? I have a NIB '77 corvette MC but I thought that was a 1 1/8 bore.
I have a buddy that used a corvette MC from '76 with manual brakes so it had the 1" bore. Not all parts stores have it available, his came from Oreilly. He likes how it works. I'm going to try it when I get the rear discs on my car but can't say if it will be what you want.
I went from 4 wheel drum to 4 wheel disc. 2nd gen F body fronts with 90 Corvette rear. I am using an 80s Trans Am WS6 master cylinder.
