[ftwmlp]

Don't know if this will be of any help, it is a snip from the electronic version of the 66 Pontiac Shop Manual showing the manual master cylinder.

[importsmasher]

Originally Posted by ftwmlp

Don't know if this will be of any help, it is a snip from the electronic version of the 66 Pontiac Shop Manual showing the manual master cylinder.

That diagram shows exactly what I just pulled off my son's car. I'm trying to see what the 67 configuration looks like, although according to Ames, all manual brakes use the same rod 64-72.

[Greg Reid]

Originally Posted by importsmasher

That diagram shows exactly what I just pulled off my son's car. I'm trying to see what the 67 configuration looks like, although according to Ames, all manual brakes use the same rod 64-72.

Does that include both single and dual reservoir masters?

[importsmasher]

Originally Posted by Greg Reid

Does that include both single and dual reservoir masters?

According to Ames, yes. The issue I'm having is the original master cylinder has a shallow depression where the rod sits, and a retainer that is held in with a clip. The replacement master cylinder we bought, supposedly for a 67 GTO (power and manual brakes), has a deep hole in the back of the piston, and the retainer is too big to fit.

Hopefully that makes sense, and I am attaching pictures to try to illustrate.