Leeedy wrote:
Okay. Two things to consider, especially in light of all the modifications and swaps:

1.) I'm going to presume there is no pushbutton shift on this particular Four Hundred. Right? Or wrong? Was it originally the way it is now? Or was this changed since new?

2.) Most people don't seem to know that there were two different shift arms on V-8 Twin Ultramatics. One arm was used in 1955... the other on 1956 Ultramatics WITH selector lever and without Pushbutton shifters. I have seen numerous occasions where a Pushbutton trans was converted to selector lever using a 1955 arm. BAD idea since this conflicts with all the rest of the linkage design and adjustment for 1956. You can adjust the linkage until the cows come home and never get it right.

ONE of the big reasons for the change was to avoid the linkage dropping into the "straight-arm position" and thus allowing what appeared to be the transmission supposedly locked in Park position (it was the linkage that was locked–not the transmission).

Furthermore with a kittywhampus linkage arrangement, the transmission is certainly going to shift oddly. Something to consider and an area you will certainly want to inspect so see what you have going on there.