1955.1 straight 6 235 three on a tree. This truck is new to me trying to straighten out my grinding up or downshifting second and third. It’s been suggested to me that my syncros are probably bad. I had an opportunity to pick up a complete drive train for 250 bucks complete with the bell housing starter and a three speed transmission that seemed to match all my casing numbers as follows. - Shifter case 3845044 - Main case 3845122 - Tail housing very hard to read 3787186
The trans I just picked up had only the plastic gear on end of shaft 7/8” wide hanging in speedometer hole. My original truck trans had the metal tab to swing to the side and then pull out the adapter the speedometer cable screws onto which has a steel gear on it about 5/8” wide.
Question I have is it seems I have to use the plastic one so it will engage when I spin the main shaft if I install my steel one into the adapter, it will not spin in the used trans I bought. I don’t really care if this speedometer is accurate it was not before. My question is more understanding how you can have two different diameter gears as the one of my original truck will not engage. Makes me wonder if I bought the wrong transmission?
