4.10 to 3.55 Axle Swap -- Will This Work

[Bayonet16]

I'm interested in going from 4.10s to 3.55s front and back. Found this Ford Sterling rear/rear springs on Craigs List. The rear is 10.25 sterling out of a '91 350 and the front is a TTB from a '97. Both have 3.55s.

I don't have the requisite skill to replace just the gears, and having someone else do the gears is cost prohibitive. So, is buying this axle set a good way to go? Can I just bolt the 350 rear axle and springs to my F250 hangers? I have a sagging left rear spring now, so doing it this way could kill two birds with one stone. Also, when I drive the truck, which is rarely, I'm usually towing a 6,500# Travel Trailer, so the sway bar that is included would be a nice addition.......I think.

Per my sig below, I have a 250 w/TTB front -- have not found a Dana 60 w/3.55s for the front yet, so I thought I'd do this in the interim.

Whatcha think? Thanks

[erics diesel]

yes it will all work swaping both axles but with 3.55 gears towing sucks

[Bayonet16]

Originally Posted by erics diesel

yes it will all work swaping both axles but with 3.55 gears towing sucks

Great thanks. What should I look for on these axles? Is the price about right? The rear dif cover is not an issue, as I'll replace it w/a high capacity/finned cover, or the one I pull off my existing rear axle. I'll also re-build the brakes. How about seals and stuff?

Yeah, I've read about towing with 3.55s and it seems that people feel strongly either way. With a ZF5, my supporting mods, and my relatively light load, I think it will be fine. However, I'm interested in avoiding a gear ratio war on this thread.

[ol_Blue97]

With your stage 1s u should be fine with towing lightly to modertly.... just watch your egts. I think i will be happy with the switch, just that none of us are found with TTBs, i would just hold out and find a d60, put thats just me.

BTW.... thoes are terryknight's axles, he is a member on here and u can PM him about them. He is a great honest guy and u wont try to get over on ya, he will tell u everything they need and u should replace b4 installing.

I see your from GA.??? Thats a long trip for ya

[terryknight]

like frank said those are my axles. you must be ed. i still have them let me know. i did cut the rear springs apart, but if you want the leafs to make/add to yours i will throw them in free

[ol_Blue97]

i have a good set of springs i could get down to u if he wants a set.