US Car Tool A518 Cross member
I hope that this helps - I put a 42 RH in my Dart and the trans fit in the stock location, front to back. The interference that I had to deal with was the removal of most of the crossmember hoop around the trans tunnel. It is why the USCT piece is so heavy - to restore the strength of the frame member that carries the torsion bars. Depending on the year of your C-body, it might be made like this from the factory - no hoop and a heavier removable piece that carries the torque of the torsion bars - I know that our 72 Town and Country race car is built like that. The result is that you have to back off the torsion bars to remove the trans - if you don't the torsion bars will bend the cross member down to the middle. This also means some really beefy metal for the piece that you fabricate.
The big deal with up and down positioning is the trans pan that is substantially lower that a stock 727 or even most deep 727 pans. I ended up with a hole punched in mpan and resolved the issue by getting an off road 4x4 pan shield for the trans - I am sure that they make ones for 46 RH. If you need the company send a pm and I'll dig it out for you.y 42RH
I hope that this helps - I put a 42 RH in my Dart and the trans fit in the stock location, front to back. The interference that I had to deal with was the removal of most of the crossmember hoop around the trans tunnel. It is why the USCT piece is so heavy - to restore the strength of the frame member that carries the torsion bars. Depending on the year of your C-body, it might be made like this from the factory - no hoop and a heavier removable piece that carries the torque of the torsion bars - I know that our 72 Town and Country race car is built like that. The result is that you have to back off the torsion bars to remove the trans - if you don't the torsion bars will bend the cross member down to the middle. This also means some really beefy metal for the piece that you fabricate.
The big deal with up and down positioning is the trans pan that is substantially lower that a stock 727 or even most deep 727 pans. I ended up with a hole punched in mpan and resolved the issue by getting an off road 4x4 pan shield for the trans - I am sure that they make ones for 46 RH. If you need the company send a pm and I'll dig it out for you.y 42RH