Join Date: Dec 2012
It could need more of the friction modifier added into the rear diff. My grandfathers gm did the same thing. Poured a container of it in and fixed the issue. If its not in the gear oil it doesn't let the L/S plates slip they just bind.(from what I was told)
If the mud ain't flyin' ... You ain't tryin'
2009 F-150 XLT 4x4 4.6L 2" Ready lift front and rear
1989 Bronco II 4x4 2.9L 6 - 8" skyjacker lift front and rear
1987/89 Bronco II 4x4 work in progress. Full size Dana 44,Ford 8.8 5.0L swap coming