slip yoke problem / TF 727

I added the following conclusion to a thread that I had started a while back about the issue I was experiencing. The bottom line is, the tolerances on the transmission main shafts from Mopar, and the tolerances on the factory yokes as well as the aftermarket ones are all over the map. Creating a proper fit will unfortunately be a game of trial and error. In the end, you will want to ensure that you have less than .010 vertical end play on the yoke, or you will definitely have vibration issues. Hopefully by now you have it worked out, but thought I would add my two cents anyway.

"Finally got my old truck back together tonight. A month ago, I convinced Wayne at Brewers to run some measurements on one of his replacement main shafts vs a new TY8330 yoke. Having found a matched set that measured less than .010 vertical end play, I told him I would buy them, but suggested he sift through his stock of yokes, as I was convinced the tighter the better. In the end I basically told him I would like one that you need to grunt to push it in. He laughed, but in the end the one he sent was extremely tight. I measured the end play on the shaft and yoke in the vise, and it was less than .005. Had the tranny reassembled with this shaft, and new synchros, bearings etc. Took it for a test run tonight, and no more vibration at any speed. Doing the happy dance now! Bottom line is there are many things that can cause a drive line vibration. A loose slip yoke is one of them. Hopefully others can learn from my experience. Thanks to all for the interest and suggestions."