rear end swap - Page 2 - Dodge Durango Forum
Gen I Dakotas 1986-1990 Dakota-Specific Questions

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post #16 of 38 Old 12-16-2008, 06:57 AM
schaffer
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Quote:
Originally Posted by 1stGen360dakota View Post
I wanted to put a 8 3/4 in my dakota but I couldnt find one that was less than 600 bucks that was set up like I wanted. So I went with an 8.8 out of a 94 exployer 4 wheel drive and it fit great. I found one with a limited slip, 3.73 gears, and 31 spline axles. I ground off the old mounts and put some mopar performance spring mounts and comp. eng. shock mounts. I know that alot of mopar guys would consider this sacreligious but it was a cost thing for me. I got the rearend at the u-pull it junkyard for 60 bucks and although it took several hours to get it out it was well worth it.
Do you have any pics of your rear end set-up.I'm thinkin of putting a dana 44 or a 60 in the rear but i hear the 8.8 that ford makes is a beast
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post #17 of 38 Old 01-20-2009, 12:52 AM
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Cool ford rear end

Quote:
Originally Posted by 1stGen360dakota View Post
I wanted to put a 8 3/4 in my dakota but I couldnt find one that was less than 600 bucks that was set up like I wanted. So I went with an 8.8 out of a 94 exployer 4 wheel drive and it fit great. I found one with a limited slip, 3.73 gears, and 31 spline axles. I ground off the old mounts and put some mopar performance spring mounts and comp. eng. shock mounts. I know that alot of mopar guys would consider this sacreligious but it was a cost thing for me. I got the rearend at the u-pull it junkyard for 60 bucks and although it took several hours to get it out it was well worth it.
do you have any pic's of it done would like to see them!! thank's!!
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post #18 of 38 Old 03-24-2009, 08:51 PM
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you will need to weld on the shock mounts also. I put a A 100 rear end in mine.I think its the same as the A body. All the brake parts from your rear end should change over. I had to drill one hole in each side where it bolts your axle in.
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post #19 of 38 Old 01-07-2010, 01:05 AM
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Quote:
Originally Posted by 1stGen360dakota View Post
I wanted to put a 8 3/4 in my dakota but I couldnt find one that was less than 600 bucks that was set up like I wanted. So I went with an 8.8 out of a 94 exployer 4 wheel drive and it fit great. I found one with a limited slip, 3.73 gears, and 31 spline axles. I ground off the old mounts and put some mopar performance spring mounts and comp. eng. shock mounts. I know that alot of mopar guys would consider this sacreligious but it was a cost thing for me. I got the rearend at the u-pull it junkyard for 60 bucks and although it took several hours to get it out it was well worth it.
what did you do for the drive shaft? How did you get that to work? let me know thanks..
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post #20 of 38 Old 01-07-2010, 01:42 PM
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I went to a driveline shop with my yoke and told the guy how long I wanted it and told him it was going into a 8.8 ford rear and he made me one with spicer u-joints and it was a perfect fit. I think it cost me a little less than 200 bucks. I just recently took the factory posi unit out and put a mini spool in it after finding a non-posi carrier. Im not too crazy about the spool but at the track it works great.

90 dakota,408 magnum R/T heads,727 trans,9.5 converter,31 spline 8.8 rear, 1.579 60' 1/8 7.178 @ 94.55
11.33 @117.13 mph N/A
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post #21 of 38 Old 01-07-2010, 02:38 PM
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Quote:
Originally Posted by 1stGen360dakota View Post
I went to a driveline shop with my yoke and told the guy how long I wanted it and told him it was going into a 8.8 ford rear and he made me one with spicer u-joints and it was a perfect fit. I think it cost me a little less than 200 bucks. I just recently took the factory posi unit out and put a mini spool in it after finding a non-posi carrier. Im not too crazy about the spool but at the track it works great.
I have a 8.8 out of a explore and its non posi. just have to figure out what I'm going to do. spool or after market posi unit. thanks for the info. What don't you like about the spool? bad on the street? thanks again.
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post #22 of 38 Old 01-07-2010, 09:46 PM
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Its tough going around corners and it drags the tire on the side you are turning. I have 275/60/15s hoosier drag radials on it at the moment and so far I have yet to get caught in the rain which I think would be kinda sketchy! I forgot about the shock mounts that I had to weld on. They were comp. eng. mounts that had to be opened up. I will try to post some pics this next week on a lift.

90 dakota,408 magnum R/T heads,727 trans,9.5 converter,31 spline 8.8 rear, 1.579 60' 1/8 7.178 @ 94.55
11.33 @117.13 mph N/A
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post #23 of 38 Old 01-14-2010, 03:46 AM
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Quote:
Originally Posted by 1stGen360dakota View Post
Its tough going around corners and it drags the tire on the side you are turning. I have 275/60/15s hoosier drag radials on it at the moment and so far I have yet to get caught in the rain which I think would be kinda sketchy! I forgot about the shock mounts that I had to weld on. They were comp. eng. mounts that had to be opened up. I will try to post some pics this next week on a lift.
any pics yet? I got a quote for the new 373's and a posi unit $500 bucks.
and they said I have to weld the tubes to the center section. its a weak point I geuss. Also what wheels your running? 15x8 what back space or the wheels?
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post #24 of 38 Old 01-14-2010, 02:16 PM
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If you plan on running in the 9s I would weld the tubes if not they are strong enough. I am running 15 x 8 wheels with 4 1/2 back spacing. The shock mounts you need are competition engineering part number 3170 and the shock mounts are mopar part number p4120074. The shock mounts will need to be opened up to fit around the axle tube. I will try to get some pics this afternoon.

90 dakota,408 magnum R/T heads,727 trans,9.5 converter,31 spline 8.8 rear, 1.579 60' 1/8 7.178 @ 94.55
11.33 @117.13 mph N/A
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post #25 of 38 Old 01-14-2010, 02:25 PM
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Quote:
Originally Posted by 1stGen360dakota View Post
If you plan on running in the 9s I would weld the tubes if not they are strong enough. I am running 15 x 8 wheels with 4 1/2 back spacing. The shock mounts you need are competition engineering part number 3170 and the shock mounts are mopar part number p4120074. The shock mounts will need to be opened up to fit around the axle tube. I will try to get some pics this afternoon.
O.K thanks for the great info. Yea no I don't ever plan on running 9's.
The guy I'm dealing with is a power trip. He like to over think every thing.
With this back spacing the wheels don't stick out right. I don't like that look at all. I would like the wheels to be even with the box side's. From your pic's it looks very good. thanks again
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post #26 of 38 Old 01-14-2010, 02:43 PM
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http://therangerstation.com/tech_library/Axles.html This site gives you all the information you need to locate the right rear end. I copied this and took it to the junkyard with me and found a 3.73 limited slip in a 94 explorer 4x4 and it has the drum brake setup. If you want to go the mini spool route you can get one with a open diff. If you go the limited slip way and want to change to a mini spool you have to get a open carrier. I found this out the hard way. lol

90 dakota,408 magnum R/T heads,727 trans,9.5 converter,31 spline 8.8 rear, 1.579 60' 1/8 7.178 @ 94.55
11.33 @117.13 mph N/A
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post #27 of 38 Old 01-14-2010, 03:02 PM
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Quote:
Originally Posted by 1stGen360dakota View Post
http://therangerstation.com/tech_library/Axles.html This site gives you all the information you need to locate the right rear end. I copied this and took it to the junkyard with me and found a 3.73 limited slip in a 94 explorer 4x4 and it has the drum brake setup. If you want to go the mini spool route you can get one with a open diff. If you go the limited slip way and want to change to a mini spool you have to get a open carrier. I found this out the hard way. lol
Thats what I have is the non-posi rear end. So I have to decide what I'm going to use. It's so much money. I might just look for one that's already posi like the one you have. Maybe I can sell the one I have. If i use this one I'm looking at $500 just for the 373s and the posi unit not installed. Plus whatever it takes to make it fit the truck. will see what happens. thanks
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post #28 of 38 Old 02-02-2010, 02:26 AM
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Quote:
Originally Posted by dakotajr View Post
I have an 8 3/4 rear that is 5/8" wider than a stock dakota rear. 5x4.5 lug pattern, 742 center section, just needs backing plates, brakes and drums (which are the same off from an 8 1/4 rear), and the spring perches welded in for a dakota width. I am unsure of the gear ratio. It can be yours for the low, low price of $100. Just PM me if interested.
The 742 housing is the non crush sleeve housing, so it is more desirable.
still have this rear end? if so let me know thanks.
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post #29 of 38 Old 02-02-2010, 06:02 AM
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I have to cut an 8 3/4 down from a d100. Does anyone know offhand the flange to flange measurements of an A-body. i have seen a few go o ebay and it seems they had a bunch of diffrent measurements.
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post #30 of 38 Old 02-02-2010, 06:34 AM
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Koda Crazy - Yup, still have the 8 3/4 rear. PM'd

Littlejohn44 - Flange to flange on an A-Body rear is 57 1/8"
the housing itself is 52 5/8, the spring perches are 43"
Here is a link to mopar rears and their dimensions:
http://www.moparts.org/Tech/Archive/axle/16.html


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