I want to go with a 67 dual bowl style manual master cylinder (4x drums). Are the pushrod lengths the same? I don't have the old master cylinder anymore that things been long gone for more than 15 years.
I don't have my original pushrod. So, next plan.I know this! You have to use your original pushrod. There is a problem with that though. It's held into your original master cylinder by a special clip.
Because my master cylinder was dead, I just pulled out the piston, cut it in half so the pushrod was free, than I pulled the clip off the pushrod.
Another way involves putting the master cylinder in a vice, putting a rod through the pushrod hole, and than using a bottle jack on either side to force the rod up and force the push rod out of the cylinder.