I have only had my 69 Camaro about 6 months so i do not know alot about its past but someone converted the front from drums to disc but it does not have a booster behind the master cylinder i read somewhere you need to change master cylinder when you change brakes.How do i tell if my master cylinder is for all drums or disc drums?

usually a disc/drum master will have a small and a large resivoir.

the drum/drum and disc/disc masters have two resivoirs of the same size.

otherwise, i think the drum/drum master has check balls to hold pressure to the brakes. no way i know you could diagnose that without a doubt without disassembly. if the brakes are not releasing for a moment, it could be this, or a restricted hose, or possibly a slow caliper. a slow caliper would probably take a second to apply as well.

apply and release the brakes and then open the bleeder. if fluid squirts, and the brake releases, it could be the line, or the master. close up and apply and release again. then disconnect line from master. if the brakes release, it is prob'ly the master.

if the brakes remain applied with the bleeder open, there is a problem at the caliper area. (this also assumes the bleeder opens and is not clogged.)

Yes, pull the two outlet lines from the M/C off and check and see if the check valves have been pulled out of them.

You can use a hard metal screw like a wood screw and gently thread it in the line seats and pull them out and the check valve stuff should just come out..

My big rebuilt M/C didn't have them in it so I got lucky.

pdq67

Thanks guys for the help.So take lines off MC and screw a wood screw in holes in MC and if you feel a rubber like thing pull it out of both front and rear outlets that lines screw in?Is this right?

NO, the tubing seats should be either soft mild steel or aluminum and the screw will bite into them and the check valve stuff are behind them..

Do it gently and put the seats back in using a soft punch, again carefully!

pdq67

I have photos of most brake components on my web page below.
The drum master cyls are smaller than disc master cyls. You don't have to remove the seats to check for the checkvalves behind them. If you poke a toothpick or small piece of wire in the outlets they will go right in if there is no checkvalve. The checkvalve is a small rubber piece about the size of a pencil eraser just behind the seat.

If your master cyl is the small drum type you need to replace it with a disc master anyway. Any parts house should be able to get one for you.
David

Cool David about the toothpick test for them..

pdq67..