I just bought a new Delco master cylinder for my '70 with power disk brakes. Unlike the original cylinder, it needs the short booster pushrod (approx 2 5/8 inches long). The GM dealer can't get it, and junkyards make you buy the whole booster to get the rod. Here's a pic I found of the two different sizes:

http://members.cox.net/chevelle/rod.jpg

Any help with this matter would be appreciated. I would be glad to trade with anyone with the opposite problem.

Jim

Jim
It sounds like you got a 71-72 master. I can't help you with the push rod but we have gone as far as taking the piston assembly out of a master and swapping the piece that receives the push rod to make 'em match. Do you still have your old one that was with that booster?

i will trade a short one for a long one.

Engineer, Email me at 1970ss@cox.net so we can set up the trade.

Thanks for the piston swap suggestion Doug.It's good to know there are other options.

Jim