Well how many miles are on ur rig? I just put a 4.7 into my t-case and the case has roughly 230k, when i pulled the speedo sender out i noticed there were almost no spline left only slivers on a few of them. so u may need a new sender also the plastic splines were warped so im sure this is why my speedocable broke, just my
![My Two Cents :twocents:](https://board.marlincrawler.com/Smileys/marlin/twocents.gif)
tho, GL