Does your truck still have a 3 speed transmission? do you know what type of shifter was used? Most of the Lark parts will fit, but you would likely need to find a 63 Lark, to be sure everything clears the hanging pedals. Try draining the fluid from the transmission and then fill it again with Valvoline 75/90 full synthetic. If the shifting problem is in the transmission this may help. If the trouble is in the linkage or the shifter a good inspection and cleaning after making sure the linkage is adjusted may also help.
Posted on May 26, 2017, 9:54 PM from IP address 22.214.171.124