Sure i got the 10.50 rearend, but would these work...

Ford F250 / F350 4.10 Ring & Pinion Set

 

i dont think so, you might have to change the whole diff..
im sure others will chime in with a definate answer for ya

 

I think the ring gear diameter is too small...
Here is a link with some useful info...
Ford 10.25 & 10.50-Inch Axle Tips - Four Wheeler Magazine

 

It will fit fine. You have to use a 10.25 install kit...

Its done all the time.

 

thx for replys guys. CSIPD, from what ur say'n, looks like i need whats mentioned in the "article" Bake posted, with the new wider diameter bearing as well....?

 

Good info Joe. I didn't even know they made a kit for that purpose.

There was some blurb on the article in the link...

Fact: This axle received a larger ring gear, which improved its overall strength and addressed the premature failure issues of the 10.25-inch axles when used with 4.10:1 or numerically higher gear ratios. Unfortunately, it was designed with a smaller pinion bearing than its predecessor.

Is there any truth to that statement? If so, would the 10.25 kit have an upgraded pinion bearing?