posi rear question

[cumminskiller]

I have a F350 PSD, and i found a posi rear out of a gas F250, waht do you think about putting the rearend out of the 250 into my truck?

[cumminskiller]

andd..................

[Rob]

hmmm, no idea. try it and see how it works. if it has the same gearing.

[cumminskiller]

do they have smaller brakes?

[sirnunya]

v10 f250? should be the same. dunno about the 5.4 f250s

[willypscustoms]

they are all the same

[Marty]

does yours not have a posi?

[cumminskiller]

Nope, I dont have posi, and my pinion bearing is shot so I figured either rebuild it or buy a whole new rear, and I looked in my local classifieds and I found a posi rear with 40k on it for a few hundred bucks, I looked in a few junkyards they want 1200+

[robertcarmel]

I was under the impression that in any given year, the ONLY difference suspension, and payload wise between the F250, and F350 was the payload. That the F350 had an extra leaf, and thus more payload capacity, but that the towing was the same, all things being equal.

If the above is a true statement then you only have to find out if it is the same gear ratio, otherwise your rig could change drastically i.e. Out of the hole Speed, Towing Capacity, Top End speed, etc.