The shift linkage for the 352 and 365 transmissions connects to the shift
control shaft at the rear of these transmissions. The attachment is made by
means of a roll pin through the linkage universal yoke and the control shaft.
This arrangement is highly susceptible to wear on the shaft, universal and the
pin, and a better arrangement can be had with the following mods.
Remove the shift linkage from the car (good opportunity to clean, inspect and
repair). The linkage can be detached from the shift lever with a little effort
through the access hole in the center tunnel. The middle pivot and the rear
connection must also be detached. Then the whole linkage can be slid out the
back. Check the universals and rebuild as necessary. Also check the rose joint
for the center pivot and the shoulder bolt and plastic bushings at the shift lever
and replace if necessary. The rose joint is attached to the linkage with
Loctite. Try a 1/4" bolt to see if it will fit through the hole in the end
universal yoke and also through the hole in the shift control lever. If not,
drill to 1/4". Saw a slot through the universal yoke on ONE SIDE ONLY located as shown in the photos. The yoke does not have a flat surface for the head of the bolt so you now need to mill, file, or grind the material away on the yoke so that a bolt through the holes has a flat place to sit. Reinstall the linkage and install a good - at least grade 5, and an AN bolt properly sized is better - bolt through the hole and secure it tightly with a washer and a nyloc nut - also grade 5 or better. The universal yoke will be tightly clamped onto the shaft and will no longer move around.