Are the mounting nuts on a 1969 camaro z28 brake booster supposed to be a shouldered nut or a nut with a lock washer?
1968 and 1969 AIM's say a nut and lock washer. My 1968 has the nut and lock washer.
The booster bracket-to-firewall attachment uses plain nuts and split lockwashers, and the master cylinder-to-booster uses prevailing-torque Stover nuts (no lockwashers).
Thanks a million guys
I had to go look up what the h*ll a stover nuts was! :)
(http://www.lafasteners.com/images/P/stoverlocknuts-02.jpg)
Now I have to look at my car!