I have a 1999 Ford F350 7.3 L 2WDQuestion:  Can I convert a Ford 2wd Zf S6-650 transmission to 4wd? Or would having a 4wd transmission require me to buy a new purpose built 4wd trans?Answer:  We could supply you a rebuilt ZFS650 however it would be less expensiveTo do the conversion. It’s a fairly common conversion you will need the following parts:

• Our part number MWT1319-304-070 MAINSHAFT your cost $235.00

• Our part number MWT1319-301-073 4X4 TAILHOUSINS $345.00

• Our part number MWT0734-319-598 4X4 SEAL your cost $9.50 plus S&H.

If you need any additional technical help or help with the order just give Dan a call toll free 888-824-2012 he can help you. You can see the other parts we can supply for your ZF S650 manual Ford 6 speed transmission on our site.