F150 transfer case options

[F***roads]

Hey all new to this site, same username as the old one with a P. Ive got an 04 f150 4.6L, just wondering if anyone knows if any other transfer cases will bolt up to the 4R70E? I would love to fit a manual shift t case from a super duty in, to get a stronger case with a fixed rear ouput, and use a double cardan front shaft. Rig is SASed with super duty 60/10.5". Thanks

 

[arse_sidewards]

Hey all new to this site, same username as the old one with a P. Ive got an 04 f150 4.6L, just wondering if anyone knows if any other transfer cases will bolt up to the 4R70E? I would love to fit a manual shift t case from a super duty in, to get a stronger case with a fixed rear ouput, and use a double cardan front shaft. Rig is SASed with super duty 60/10.5". Thanks

I forget when the F150 sized stuff ditched the 31spline output on the transmission. If you have the 31-spline input on that transfer case you can use pretty much any transfer case out of a full size as far back as when they started doing married transfer cases. NVG 271 from behind a 4R100 (must be from behind a 4R100, the others have different spline counts) would be my pick for strength and ease of swap.


You need to verify that your have a 31 spline output on your trans before you do any of this. Should be easy enough to Google.

 

[F***roads]

Ok thank you, good to know. need to do some junkyard research and more google fu

 

[Bigblue 94]

Bw4406 has the same splines and 6 bolt pattern as the earlier cases and the SD case. So any nv271 or bw4407 should bolt up fine.

 

[wvracer821]

I have a 271 in my SAS chevy. i picked it up at a junk yard here for $180. 31 spline input and the standard 6 bolt pattern. 34 spline rear output and 32 spline front output, flanges on both sides. it is a massive case though and brutally heavy.

 

[arse_sidewards]

it is a massive case though and brutally heavy.

Still way lighter than a 205.

 

[F***roads]

So next question would be, anyone know how the spedo works on a 271? Maybe similar to the 4406 with a magnet thing in the t case output? Too many computer modules talkin to each other in these things.

 

[YotaAtieToo]

I'm pretty sure both of the trucks those cases come in will have the speedo off the rear diff.

 

[arse_sidewards]

I'm pretty sure both of the trucks those cases come in will have the speedo off the rear diff.

Some of the 271s have a sensor provision. I'm pretty sure it's just a tone ring though. I don't think Ford has run a mechanical speedo in a full size truck/van since '91 or so.

 

[no class]

https://www.ford-trucks.com/forums/871344-esof-elimination-build.html


Something to consider if you end up having trouble finding a manual shift case. Around here manual cases off a gas/auto truck are almost impossible to find. pics aren't until the very end of the thread.

 

[F***roads]

I know for sure the rear diff sensor is ABS only, i ran around for years without that plugged in when i first swapped in the 10.5, and the spedo worked just fine without it.

 

[arse_sidewards]

Pics because I trust Austin more than Google.

 

[arse_sidewards]

The shifter provision on the 273 appears to be identical to the one on the 271 but with an extra boss cast around it to mount the electric stuff to. I think you could just mill a slot in a scrap of bar stock that's the right length, bolt it on and get something geometrically equivalent to a 271 shifter. If the case has the boss for the range switch it should be an easy drill and tap operation if you have the case out and apart.