The Stovebolt Site Forums The Shop Area Driveline Dual Master install issues/questions

Good morning. We have a 1952 3100. Attempted to install a dual master under the cab in the location of the old master. Using the following parts...

https://www.classicparts.com/1947-59-Dual-Master-Cylinder/productinfo/71%2D201/

https://www.classicparts.com/1947-54-Master-Cylinder-Adapter-Kit/productinfo/71%2D984/

The adapter kit bolts in using the old bolts from the original master. The MC mounting surface faces towards the rear of the truck. The MC then mounts to it from the back side.

We mounted the adapter bracket first and then attempted to lift up the dual master and it was obvious there was going to be clearance issues with the rear transmission cross member. Has anyone ever installed one of these before?

We had a different truck a few years ago that was titled as a 1951 but had all the 1952 characteristics. We installed the exact same kit without issue on that truck. Now, in hind site, that truck had a different rear end, a 235 and I'm assuming a different transmission. This truck has the stock rear end, torque tube, etc. It does have a 235 also. Not sure if transmission is original.

So, is there a difference in cross members in a 1951 and 1952?

Well, a different viewpoint and approach makes all the difference. We had installed just the bracket to the truck and then tried to mount the master cylinder to the bracket. This is where the apparent issues with the cross member materialized. I pulled the bracket off and installed the mc to the bracket first. I then when down under the truck to see if I needed to drill new holes, etc. I lifted the rear of the mc up over the cross member and then started to slide the bracket forward. That's when I noticed the holes lined right up. So, the mc fits fine. It's about an 1/8 of an inch above the cross member. So, we are good. If at first you don't succeed....

Don’t you just love it when a plan comes together!🛠