Advance Adapter kit 50-2704A

[lagbolt]

Anyone use this adpater kit listed below for a 4r70w? Any tips suggestions? Pros/Cons vs using a ZF adapter? Seems better then the old kit because you dont have to change the main shaft.

 

[lagbolt]

I have been reading on this adapter and it also appears that the stock cross member can be used without moving the brackets that attach to the sides of the frame and welding them further back to compensate for the overall length of the trans?
Any input on this would be great.

Thanks Tom

 

[DirtDonk]

That's the kit we sell the most of. As long as you're starting with a 4wd version of the transmission, you're in good shape.
The ZF adapter is less expensive because it's not intended for use with the automatic trans. You'll need to source and install your own intermediate seal to make things work properly. If you're willing to do that, there is at least one thread about it, and possibly more.
Just be careful what you get yourself into. Might be easy, might need some deep thinking to make it work. I've heard both.

Otherwise, no specific complaints that I remember regarding the 2704a kit.

Paul

 

[fordguy]

I have been reading on this adapter and it also appears that the stock cross member can be used without moving the brackets that attach to the sides of the frame and welding them further back to compensate for the overall length of the trans?
Any input on this would be great.

Thanks Tom

It is not hard to modify the cross member. I cut a section out, had some sheet metal bent and welded the piece in. i think i have pic posted on here somewhere.

 

[lagbolt]

Fordguy,
Did you have to move the cross member brackets on the frame rails towards the rear about an 1 1/2in?

Paul,
From what AA tells me the intermediate seal should come with the 50-2704a kit. Its made for the automatic which is a wet extension housing and the ZF is not. There for the ZF adapter will need a sourced seal like this (Timken 471950).

Thanks Tom

 

[fordguy]

yes i just took an extra set of mount and cut the two of them and made them longer. used the original bolt holes on the frame.