01-26-2012, 06:19 AM
Hey guys
I think I'm in the home stretch on the 73 Mach 1. All of the little problems you encounter in restoring a car have been resolved except for one. The owner wanted to put a 4 barrel carb in place of the 2 barrel. The problem is with the shifit of the transmission. I had to lengthen the kick down rod and I made it adjustable to try to match the movement it had with the 2 barrel. The problem I'm having is with the shift. I've lenghtened and shortened the rod but the problem I'm having is that when the tranny shifts from 1st to second and 2nd to 3rd the engine races before it changes gears. Some times when it warms up the shift is better but it still seems to slip as it goes into gear. The tranny is rebuilt and the vacume modulator is new. The car guys here have offered suggestions but I'm not having any luck fixing the problem. Some said to adjust the vacume modulator, but I don't know if I should screw it in or out. The vacume is coming form the base of the carb. I tried using vacume from the intake first but the symptoms seem to be the same either way. My experience is with c-4's and aod's. This tranny has me stumped. Any help would be greatly apprciated.
Thanks.
Paul
I think I'm in the home stretch on the 73 Mach 1. All of the little problems you encounter in restoring a car have been resolved except for one. The owner wanted to put a 4 barrel carb in place of the 2 barrel. The problem is with the shifit of the transmission. I had to lengthen the kick down rod and I made it adjustable to try to match the movement it had with the 2 barrel. The problem I'm having is with the shift. I've lenghtened and shortened the rod but the problem I'm having is that when the tranny shifts from 1st to second and 2nd to 3rd the engine races before it changes gears. Some times when it warms up the shift is better but it still seems to slip as it goes into gear. The tranny is rebuilt and the vacume modulator is new. The car guys here have offered suggestions but I'm not having any luck fixing the problem. Some said to adjust the vacume modulator, but I don't know if I should screw it in or out. The vacume is coming form the base of the carb. I tried using vacume from the intake first but the symptoms seem to be the same either way. My experience is with c-4's and aod's. This tranny has me stumped. Any help would be greatly apprciated.
Thanks.
Paul