I am installing a new master cylinder. I do not remember which peddle shaft goes into the the upper and the lower mounting holes.

If anyone has one in operation please take a look and let me know.I believe the same layout was used oon 40 - 54 Chevys.

I have a 40 chevy manual but the pictures are not clear.

Radar, This is a '46. Din't know if anything in this will help or not, Good Luck. LINK

Thank you Beater of the pack.

My question was answered 6 min into the video where the speaker says "for reference purposes the clutch shaft goes into the upper hole and the brake goes into the lower hole."

Thanks Radar

Glad to be of help. These days you can be pretty sure the information you need is out there somewhere. It's just WHERE? Good luck with tour project.