Anyone know what a 83 F250 with a 6.9 has for a rear axle?

I would guess d60 but it might be a sterling of some sort I cant remember what the year cut off was. I looked at a axle chart that I had in my favorites and it says its a ford 10.25 in 83 and newer.

The info that I looked at siad either a d60, d70, or a 10.25. Anyone sure what one. I'm pretty sure that I can rule out the 60.

Id lean toward the 10.25.

i had a sterling 10.25 in my 1990 f250 that thing was bulletproof

The earlier ones had Danas as well, the old man's 84 has a Dana, I have a Sterling on my 86. What do you have for a code?

my guess would be a d70 personally.

No code, a local guy is parting out a truck. I was thinking of upgrading the rear diff on my '79. I'll have to get some pics from him, unless he actually knows what diff it is. I'm hoping for a 70.

If you could get a look at the door tag, you would find the code there.
Here is a list of the ones I have for 80-86
31 Dana 6250 3.07
32 Dana 6250 4.10
33 Dana 6250 3.54
35 Ford 6250 4.10
38 Ford 6250 3.08
39 Ford 6250 3.55
72 Dana 6300 4.10
73 Dana 6300 3.54
42 Dana 7400 4.10
43 Dana 7400 3.54
45 Ford 7400 4.10
49 Ford 7400 3.55
52 Dana 7400 4.10
53 Dana 7400 3.54
62 Dana 8200 4.10
63 Dana 8200 3.54
65 Ford 8200 4.10
69 Ford 8200 3.55

I'd be hoping for code 65 if it were me. Personally, I think the truck would have a D70.

4.10's would be nice, I could live with those for a while. I really want 4.56's, but with 35's these 3.54's are getting old.

Ok I talked to the guy tonight, he doesn't know what the hell he has. I asked for some pictures and he said he'd look for a number stamped into it (typical Dana stuff), and I said "yeah should be a 60 or 70 on it". He imeadiatly says "oh yeah it's a 60". He says yeah it's a 60 because it has a bolt in pinion carrier. Huh? Sounds like a 14 bolt or 9" to me. I thought that a 70 bare a striking resemblance to 60's. The only external diff being a physically larger case?

I have no clue what the seller is talking about...but yes, your assumption is right about how a D70 looks. There are one of two things that can come from this transaction...either you get a steal, or this will be the biggest hunk of crap you ever saw, and you'll be sorry for ever getting involved. At least that's my experience with sellers like you described.

Sounds like a 9 inch to me.

He lives in a town in between where I currently reside and the town that I grew up in. Next weekend I think that I'll be headed that way. I'll try and stop by and take a look for myself what he has. If he doesn't know what he has I figure I can get an even better deal. It has me very curious now. If it was under a 250 there's no way that it's a 9", unless someone put it under there.

Well thats what I meant was they didnt put 9 inches in 250s so if it does have a 9 inch then it aint a 250 unless somebody swapped a 250 body on a 150 chassis or somethin along them lines. I would bet he dont know what hes talkin about so the best way is to see what it is with your own two eyes.

could be a 9 1/4 rear.........basically the same as a 9 inch just of course a bigger ring gear and a HUGE pinion in it....also bolt in pinion.....good rears but extremely rare......I HAD one.....never used it though.

My neighbor used to have an 83 F250, his came with a factory 460 and the camper special package (swaybars, dual batteries, etc.). The axle that was in his truck was a goofy semi-floater Dana variant. I don't know the actual numbers on it, but it had flange axles on it like a 9-inch, but still had the 8-bolt pattern and standard D60-style center section. It was the heaviest axle that he could get in 83 in an F250 (ordered that way), and it even had left-handed threads on the driver's side wheel studs to prevent them from working loose while hauling.

All I know is that you DON'T want to trade your D60 for one of those. The rear was crap. He replaced the rear sometime in the early 90s when it still had the slide-in camper in the back, and the second rear went in spectacular fashion right after he restored it in 2002. It threw the center pin out of the carrier at 40mph on a back road and locked the back tires up. He slid sideways into a ditch, somehow saved his brand-new paint job and NOS body panels from damage. When he crawled underneath it to see what happened, he found the center pin, bent in a "U" hanging out of a gaping hole in his brand-new chrome diff cover. He sold the truck a few years ago, but still has the chrome diff cover with the center bolt lodged in it as a suveniour.