Report Who is using a FMX in their '63 or '64? I have a question in 1963-64 Avanti Posted July 9, 2018 On 7/7/2018 at 11:29 PM, dynolou2 said: If this is an FMX that outer lever is ONLY for passing gear. The modulators job is to elevate line pressure when engine vacuum drops, shift firmness and to a certain extent timing. Now remember that the carb to to cross shaft rod had a certain amount of give in it or pull back, it has spring in it, and may be releasing the lever from the kick down detent. Are you sure that you have a ford unit in car, tag with any serial # ?? With the engine warmed up and off the choke a 19/32 drill bit should fit, see the shop manual for a picture of this. Lou Cote Lou, 19/32 drill bit will fit where? Are you referring to the jam screw clearance? This transmission is a mystery. It has everything point towards a FMX but has the BW tag on it. The important info on that tags has been scratched off, not sure if that was intentional or not. But as we know the PS did not have a modualtor. If a FMX is or was installed does the drive shaft have to be modified to make the fit? To be clear, does the shaft have to be shortened or lengthened at all?