I have recently acquired a 3 speed toploader that I am assuming came from a truck because of the very short tailhousing. It is only about 7" in length. What is involved in swapping the tailhousing, and will one from a 4 speed toploader work?
Since the output shaft is the last thing that comes out of the case you might as well rebuild the three speed. A four speed toploader output shaft will NOT work in your transmission.
Ok, thanks for the info. Now another question. As long as the shifter comes up in a good position, this tranny will still bolt right in with the exception of needing a onger driveshaft, correct? I have the bellhousing, clutch, and a 164t flywheel with it that was bolted to a 351W.
As long as you can get a driveline made it should work fine. Talk to the driveline shop about the length and find out what the "critical speed of your shaft is - that way it will last longer and give good service.
Thank you, I know I am probably bothering you with these stupid questions, but I appreciate your help. Thanks again.
It is never a bother educating others. The guys that I learned from gave me knowledge and I pass it on with the things I have picked up along the way.
Think the original questions were answered so don't think its a highjack to ask a related question. Never heard of critical speed for a drive shaft. What's that?
There is a speed (rpm) at which any driveline becomes unbalanced. It is determined by the length, diameter and wall thickness. I don't have the formula at hand but I do know that shortening a driveline is always safer than lengthening one.
