4.6L Ford/FJ60 engine swap (1 Viewer)

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Apr 6, 2014
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Reno, NV
ZF transmission out of 1999-2002 F-Series is a 5 speed that is a modular bolt pattern (bolts to 4.6/5.4/6.8L and has a Ford 6 bolt flange and a 31 spline output.

Pretty easy to adapt to t-cases with that. You could also spring for a 03+ version that is a 6 speed but they are odd ball 26 spline.

I would not run a divorced case.
 
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Oct 23, 2019
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Flagstaff, AZ
ZF transmission out of 1999-2002 F-Series is a 5 speed that is a modular bolt pattern (bolts to 4.6/5.4/6.8L and has a Ford 6 bolt flange and a 31 spline output.

Pretty easy to adapt to t-cases with that. You could also spring for a 03+ version that is a 6 speed but they are odd ball 26 spline.

I would not run a divorced case.
That's good info, thank you!
 

Kleatus

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Jun 6, 2012
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Missouri
ZF transmission out of 1999-2002 F-Series is a 5 speed that is a modular bolt pattern (bolts to 4.6/5.4/6.8L and has a Ford 6 bolt flange and a 31 spline output.

Pretty easy to adapt to t-cases with that. You could also spring for a 03+ version that is a 6 speed but they are odd ball 26 spline.

I would not run a divorced case.
I wonder if the NW fab black box (planetary reduction box/adapter) would work with the ZF? Not cheap but may allow a split case and factory axles to be retained.
 

Mace

rock scientist..
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ZF output is 31 spline and the conventional round bolt pattern. It should be a cinch..
 

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