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Discussion Categories => Drivetrain Discussion => Axles & Differentials => Topic started by: nickskates4lyfe on February 26, 2010, 12:47:45 AM

Title: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on February 26, 2010, 12:47:45 AM
I found one in great shape for 50 beans, if I'm not mistaken my 87 came with a 8.8" with 3.73's

what kind of problems would I have trying to throw the newer axle up under the 87?
Title: Re: 1995 7.5" rear end in my 1987?
Post by: cvalcore on February 26, 2010, 12:51:42 AM
why a 8.8 is a much better axle. im pretty sure that the 95 should have a 8.8 and your 87 should have a 7.5  :-[
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on February 26, 2010, 12:57:41 AM
OH snap, I have it backwards then?

the one I found is out of a 95 and the guy says it a 7.5, the 4WD Ford guy thats helping me get over the Ford "hump" said its a 8.8 under my truck right now, my rearend is shot, the housing is grooved all to shit and looks horrible, the seal puke fluid, and yea it's getting replaced...

I'm looking for something that will take the beating from my 302, for $50 I don't want to get it and break it, I'll just get another 8.8 for some more money.

I was going to go with a 9" but I'm trying to get the truck going like within the next month so I want a direct swap.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on February 26, 2010, 01:03:14 AM
From what I've studied up on thus far on TRS I have an 8.8, I'll check tomorrow to be sure, but the only difference between the 8.8 and 7.5 is carrier bearings and gears, according to what I've read that is.

So in theory I should have no problem throwing the 7.5" under the truck? I'd like to go with the Explorer axle with disc brakes but I haven't found one cheap enough.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: cvalcore on February 26, 2010, 01:04:37 AM
A 8.8 should hold up fine to 302 depending on what size tire your running but your going to have to clean all the brackets of and set the axle up how you have in your truck already. a 7.5 will not last very long hell i have one in my bronco II and i can break it in hart beat with 35's and a v6  just by doing a burn out. the last time i tried i shot the cross pin right out of the diff cover and made a big mess.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: cvalcore on February 26, 2010, 01:05:39 AM
a 8.8 is equivalent to dana 44
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on February 26, 2010, 01:10:03 AM
Ah, okay I'll be sticking to my 8.8 then, so far besides some one leaving the pinion bolt loose and leaving the rearend to eat itself, the axle has take over 9k miles of the old 302, and about 600 of the new one, I' m running 31" right now but i'd like to get it a little higher and at least clear 35"

Thanks for the help, good thing i didnt grab the 7.5 just to break it lol

Ida been one angry guy, one of the fun parts of this will be the brake stands and burnouts.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: Olfordtruck on February 26, 2010, 02:00:54 PM
My truck...
    8.8" + 4.10 gears = 0 mpg + lots of fun!!!!!

that 8.8" will let the 302 fly!!!!
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on February 26, 2010, 02:28:53 PM
Well, it has an 8.8 in it now :-P

I just jumped up under there today, Im home sick from school so I had the time to check it out.

I wished the person hadnt let something so simple go unnoticed until the rearend started clunking...

Then I wouldn't be in this situation, but I'll be honest, even with the rear shot i got into it and it took off, so i'll be glad when i get a good rearend in.

I might go with 4.10's front and rear.

Anyone have any ideas on using a Bw1356 Tcase with my AOD?
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 10, 2010, 04:07:13 PM
Im diggin up my thread, its not too old :-P

I found an axle out of an 94, for 25 bucks, no play really and the housing looks good.

It turns out I'm thinking my truck has a 7.5" because the diff housing doesnt match that of an 8.8 even though the tag says it is.

The only thing i know about the donor truck is a 94 with a 2.3.

I need bolt up, rebuilding isn't an option and for the price of this I'm going to get it today.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: PlumCrazy on March 10, 2010, 04:34:21 PM
It will bolt up.

Post a pic of your axle and Ill tell you what it is.

-PlumCrazy
Title: Re: 1995 7.5" rear end in my 1987?
Post by: rngrdanny22 on March 10, 2010, 05:30:45 PM
a 8.8 is equivalent to dana 44

It is a good axle, but isnt the D44  a 31-spline whereas the Ranger 8.8" is a 28-spline? The explorer 8.8" is a 30-spline.

I say go for an explorer axle swap! Gives you about 3" drop too if you keep it the current setup... if you're in to dropped trucks...
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 10, 2010, 08:52:57 PM
Mine is a 7.5, the one i just picked up is a 94 7.5, it has hardly any play, virtually none, just needs some brakes, $25 couldnt pass it up.

We'll see how she takes the 302, it's not super powerful or anything, not too far off stock, so it should be okay.

I'll get it in this weekend, and it'll be on the road by monday.

Hah, Im stoked. I'll put some pictures up tomorrow when it isnt dark.

too bad its open, might have to fix that, i'm pretty sure the one i have now has a locker, not having the greatest idea of how they work, could i salvage it from my old one?
Title: Re: 1995 7.5" rear end in my 1987?
Post by: PlumCrazy on March 10, 2010, 09:00:19 PM

It is a good axle, but isnt the D44  a 31-spline whereas the Ranger 8.8" is a 28-spline? The explorer 8.8" is a 30-spline.

I say go for an explorer axle swap! Gives you about 3" drop too if you keep it the current setup... if you're in to dropped trucks...

Expo 8.8 is also 31 spline.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: alwaysFlOoReD on March 10, 2010, 10:03:55 PM
I was under the impression that from ~ '90 up all ranger based vehicles were 8.8 ?
Richard
Title: Re: 1995 7.5" rear end in my 1987?
Post by: PlumCrazy on March 10, 2010, 10:10:05 PM
Nooo.  Most, if not all 4 bangers are the 7.5 and 3.0's came with both.  Im not too sure on the 4.0 some may be 7.5.

I am pretty sure the 09 XL has the 7.5.

-PlumCrazy
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 10, 2010, 11:42:06 PM
as was I, but this one looks like a 7.5 and was behind a 2.3.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: alwaysFlOoReD on March 10, 2010, 11:46:15 PM
Clarified, thanks. I was thinking of the front, I guess, maybe, ??? :D
Richard
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 10, 2010, 11:48:07 PM
Yea, that threw me off to.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 11, 2010, 12:22:01 AM
anyone have any suggestions for gear oil? i was thinking royal purple.

that what i run in my C10
Title: Re: 1995 7.5" rear end in my 1987?
Post by: PlumCrazy on March 11, 2010, 12:25:56 AM
80w-90 gear oil.

-PlumCrazy
Title: Re: 1995 7.5" rear end in my 1987?
Post by: Olfordtruck on March 11, 2010, 12:26:44 AM
Im running royal purple in my 8.8" Ford.  It took 2 1/2 quarts of it and cost me $60 for the fluid alone but its worth it to prevent excess friction and pressure.  I reccomend it!  I used 75w-90 i think.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: cvalcore on March 11, 2010, 02:46:21 AM
holly crap this thread grew i havent checked it in a while but it looks like your getting the answears you need
Title: Re: 1995 7.5" rear end in my 1987?
Post by: PlumCrazy on March 11, 2010, 10:33:25 AM
Some times switching to full synthetic in an axle with some miles is a bad idea.  Since the oil is a bit thinner and the seals are a little worn.   You may have issues with it seeping a little around the axle and pinion seals.

-PlumCrazy
Title: Re: 1995 7.5" rear end in my 1987?
Post by: Olfordtruck on March 11, 2010, 11:23:05 AM
Very true, good call Plum.  Im at 75000 in mine now but my fluid went in at 70000.  Of course RP has the friction modifier in it as well so it will work with or without LS.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 11, 2010, 12:24:02 PM
Yea, it has grown, everybodys input is helping.

The money i saved on the axle puts me where i can replace seals, the brakes, change the fluid and maybe even go for some c-clip eliminators.

it doesnt need the seals but im going to do it right since im doing it.

And maybe I missed it, but since the ring gear and all is shot can i salvage the locker?

It has a richmond locker i'd love to throw in this open axle.

I dont really know much about rear wheel drive lockers and such, im sure when i break this case open ill probably answer the question myself, but we'll see.

Title: Re: 1995 7.5" rear end in my 1987?
Post by: PlumCrazy on March 11, 2010, 12:28:43 PM
If is indeed the ring that failed you should be Okay.

-PlumCrazy
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 14, 2010, 12:19:40 AM
Well, we got the new axle in today, filled it with some Lucas, bled the brakes and all and the truck is completely different when its riding smooth without the rear end clanking.

The old 7.5 was destroyed, we took the yoke off and it fell apart.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: alwaysFlOoReD on March 14, 2010, 12:22:02 AM
Good deal 8)
Richard
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 17, 2010, 12:15:37 PM
Okay i got it in this past weekend, just getting on here school has been rediculous.

the new one, $25 gotta paint that inspection cover though.

(http://i64.photobucket.com/albums/h192/nickconforti/DCFC0102.jpg)

the old one look at the brake shoes, soaked in gear oil driver side was missing almost all of the hardware, when i took the yoke off to put it on the other rearend it the bolt fell in, this rear end was barely hanging on.

(http://i64.photobucket.com/albums/h192/nickconforti/DCFC0106.jpg)

(http://i64.photobucket.com/albums/h192/nickconforti/DCFC0105.jpg)

(http://i64.photobucket.com/albums/h192/nickconforti/DCFC0104.jpg)

(http://i64.photobucket.com/albums/h192/nickconforti/DCFC0103.jpg)





Title: Re: 1995 7.5" rear end in my 1987?
Post by: gerald1488 on March 17, 2010, 12:41:27 PM
Wow thats crazy :o
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 17, 2010, 03:10:20 PM
I wanted to blow it out before we swapped it but i thought about how in the hell id get it up the driveway, its heavy with the 302.
Title: Re: 1995 7.5" rear end in my 1987?
Post by: rngrdanny22 on March 17, 2010, 06:22:28 PM
Looking good man! I agree, a coat of paint is needed!
Title: Re: 1995 7.5" rear end in my 1987?
Post by: nickskates4lyfe on March 17, 2010, 06:46:52 PM
Haha desperately, i just need to get another can, the drums were the same color yellow, that didnt last long. lol

The one color I always run out of is black. I have 10000 cans of everything else... I could paint fluorescent orange or pink or something. xD

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