View Full Version : 8.8" questions

01-12-2007, 12:42 PM
so i got an odd ball rearend in my F250, its a 8.8 with the 8 bolt... I know i should just buck up and upgrade to the sterling. but i really dont have the time or the money to do it.. and i cant find a 8.8 with the right gear ratio with the 8 bolt. so i was wondering what is the normal count of teeth on the side gears of a 8.8" mine has 16, is this common? cause if it is i'm just gonna pick up a rearend with the same ratio and just swap my axles and side gears in.


01-12-2007, 01:08 PM
are you sure its not a semi-float 10.25"? Axle options were Semi-float 10.25" rear with an 8-lug D44 TTB up front, or Full Float Sterling rear with a D50 TTB up front. I think you have a SF Sterling, theyre the ones with no big rear external hub...just like an 8.8, 9", 7.5", 8", yadda yadda. Im sure they never made an 8 lug 8.8.

01-12-2007, 01:16 PM
well heres a pic of the rear inspection plate in the tread http://www.funinbc.com/forum/showthread.php?t=73846 i think its a 8.8 by looking at it.. and it doesnt have the bolts to pull the axles outta the rearend, like in the centre of the tires. i'm still kinda confused.. but when i call around the junk yards seem to know what i'm talking about its a 1984 F250 4x4 6cyl, which was a Light Duty F250, and i guess ford made a garbage mod to the 8.8? putting 8 bolt axles in it..

01-12-2007, 01:27 PM
I dont know about that, first Ive ever heard of it and Im no Ford stranger.... but they made two types of sterlings. One which you could pull the axles out without removing the tire or drums (full float, axle carries no load), and the other one you had to pull the tire and drum to get at the axle (semi-float, axles carry some load)...ill go look at my sterling later, its fukin cold (-27) out tho.

01-12-2007, 01:32 PM
ya i know. i was gonna work on it out side. but i towed it to vernon so i could work in a shop.. so i'm not anywhere near it to take a look at it.. but how would i tell if it was a semi floating sterling? cause i did have to take the tires and drums off to take the axles out. but do the sterlings have the same inspection cover as the 8.8?

01-12-2007, 01:42 PM
I just looked at mine...thats definately not a sterling. It does look like an 8.8, wierd.
Heres what a fullfloater looks like, you can see the big rear external hub
A semifloat doent have that hub, but yours isnt either, its definately an oddball rearend...go to ford-trucks.com and post that pic of it, someone might have more info...Ive just never heard of an 8-lug 8.8 ever. Now Im interested to know more

01-12-2007, 01:46 PM
well when i go to vernon this weekend i'll take some more pics to show you.. i'm almost positive that its a 8.8, and i agree that its weird to see it with the 8 bolt... thats why i'm thinking of just getting another 8.8 and swapping the axles and side gears... but i need to find out more info on it..

thanks for the info

01-12-2007, 03:10 PM
What spline are the axles?

What is wrong with it?

What ratio is?

If you are trying to find another complete 8-lug 8.8 to install... that's the same work as putting in a D60, Sterling, or whatever - they were all factory axles and bolt to the same springs.

Hell - doesn't somebody have a D60 from a 70's F250 they don't want anymore?

01-12-2007, 03:15 PM
+1 on the 60, u can get a complete dif here at pic a part for 100$, just cheak to see what they have on sale and it might be cheaper.

01-12-2007, 03:23 PM
i'm not sure what spline... The housing that bolts to the crown is full of cracks. and its a 3.55, i had another rearend for it.. but it was a little bigger and i would have needed to change my drive shaft..

01-12-2007, 03:45 PM
ANY shop with a lathe, welder, and dial indicator can shorten a driveshaft. Or how about a junkyard shaft from a truck like yours that had the bigger rear end?

3.55 is easy to get in a D60, Sterling 10.25", or D70 for that matter.

I'd guess the axle bearings are probably larger on the F250 8.8 than on the F150 version - maybe the brake flanges too.

01-14-2007, 02:49 PM
some light duty f250's came with a "7" bolt pattern on an 8.8 rear do a recount on your lug nuts just to make sure

01-14-2007, 02:53 PM
some light duty f250's came with a "7" bolt pattern on an 8.8 rear do a recount on your lug nuts just to make sure

That is an entirely different body style truck with the 7-lugs, and they are a 10.25" semi-float diff. [16]