Ring and pinion

[Montanaiceweasel]

Does anyone have any experience with swapping R&Ps on the FDS-1807 and SUHD?

A Google search indicates that 4.11s are available but are they compatible with the Detroit? In a related question does anyone know if there's an air locker or limited slip available for the 1807?

 

[simp5782]

Does anyone have any experience with swapping R&Ps on the FDS-1807 and SUHD?

A Google search indicates that 4.11s are available but are they compatible with the Detroit? In a related question does anyone know if there's an air locker or limited slip available for the 1807?

I'm assuming you are talking about for the 916/917/920 trucks.

No. They are not. 4.88 or numerical higher ratio will only work with the stock detroit lockers.