I'm putting together a 2 piece driveline for my COE project.....trying to use the halves from 2 different trucks to get the length correct. They have the same spline, but the phase from front shaft to back is off slightly. Will this hurt anything? Since the front shaft is fixed at the carrier bearing, I can't see what difference it would make. Harmonics maybe? Thanks.
Well give er a try might get lucky but normally they need to be phased & why doesnt the front shaft have splines that you could rotate the rear shaft where it needs to be
They're off 2 different trucks, according to the O.P. (possibly different OEM suppliers... Dana, Spicer, and who else supplied back then? Blueprints varied.)
Yes, both Ford, same year even but slightly different design. After more thought and research, I don't think I will take a chance on it. Will get the matching parts and have a new back half made.
I was going to say even with a center support bearing you need to have them in phase as the bearing isn't solid its on a flex structure and does move around , take the unit to a truck driveshaft shop to have them do the work .
My 60 Chevy with a two piece shaft has the front shaft with the joints 90*. The back shaft has joints parallel. The angular variation on the front is addative but the angles on the back shaft cancel out the variations due to the joints being aligned. I have the factory drawing on how it was set up and angles at each joint. It is all very exact on what joint is working at what angle. Also for all the true believers of the differential must be parallel to the trans, the factory setting was down. They only made a few million cars like that.
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