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Scott
Dodge Dakota
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1/22/2002
09:23:14
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 Subject: Any advice on puttin an 8 3/4 rear in ?
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I want to put an old style 8 3/4 rear in my 94 SB 2WD Dak.
Any advice?
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ALEX
Dodge Dakota
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1/22/2002
10:51:40
|  RE: Any advice on puttin an 8 3/4 rear in ?
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I've seen it done. The B-Body rears are like 1/4" wider in track, but the Duster (a-body) rears **I Think** have the spring pads in the exact location. All you have to do is relocate the shock mounts and call Moser for a custom set of six-lug axles. If you don't want to do that, then the five-lug rotors from a pre-1991 Dakota will bolt on to the Gen II Spindles.
Here's a link to a guy who's running one on his truck. He went with the 5-lug option.
http://people.mw.mediaone.net/flyboy01/main.html
Go in and look around. He's got a whole how-to section on getting the welding right and pinion angle, etc.
Good Luck. It will fit and it's a damn sight stronger than the rear that came in your truck from the factory.
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Scott
Dodge Dakota
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1/22/2002
11:01:59
|  RE: Any advice on puttin an 8 3/4 rear in ?
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Thanks so much for your help ALEX!!
This is just the kind of advice I was lookin for.
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alex
Dodge Dakota
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1/22/2002
11:25:52
| RE: Any advice on puttin an 8 3/4 rear in ?
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You bet. I'm still considering bolting one on in place of my 9 1/4" unit. I just need some $$.
Good luck.
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B1llyw
Dodge Dakota
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1/22/2002
12:22:14
| RE: Any advice on puttin an 8 3/4 rear in ?
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I could understand replacing an 8.25 with an 8.75 rear. But why would you want to replace your 9.25 rear with an 8.75? From everything I've read, the 9.25 is pretty stout.
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alex
Dodge Dakota
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1/22/2002
13:34:11
| RE: Any advice on puttin an 8 3/4 rear in ?
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Well, I know of two people who've exploded the Auburn-style posi unit in the 9 1/4" rear. The housing and axles themeselves are strong, but the posi unit is weeeeek.
I know two other people with 8 3/4" rears in their Daks and have never exploded any piece at all. One guy has the Eaton-style posi unit where the clutch unit is adjustable and rebuildable. He has adjusted it so tight that it's almost like a spool. And I'm not sure the Eaton unit is adaptable to the 9 1/4"
I know it looks weird on paper, but there may be strength in that smaller unit. I just need to research it further.
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moparjoe20
Dodge Dakota
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1/22/2002
14:05:17
| RE: Any advice on puttin an 8 3/4 rear in ?
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Two big advantages I see in an 8 3/4 is its alot easier the change gears and you can set up the diff on a workbench instead of laying on your back under the truck.BTW if you break an axle in an 8 3/4 your wheel wont leave the truck and trash the bedside on the way out.
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alex
Dodge Dakota
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1/22/2002
14:16:54
| RE: Any advice on puttin an 8 3/4 rear in ?
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That removable chuck is also another consideration in swapping an 8 3/4" for a 9 1/4". I can swap out the pig in about an hour or so. That way I can keep a few different gear ratios for different activities. Put in the 3.90's and head for the track. Get home from the track, put in the 3.23's and drive to the beach getting 22 mpg. It's really about an hour long job oce you do it a few times.
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scat pack
Dodge Dakota
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1/22/2002
16:55:58
| RE: Any advice on puttin an 8 3/4 rear in ?
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That 8 3/4 is definately stronger -it rivals the Ford 9". During the muscle car era I think the only mopar that really needed a stronger rear was a hemi / manual tranny combo - that got the Dana rear.
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alex
Dodge Dakota
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1/22/2002
17:08:19
| RE: Any advice on puttin an 8 3/4 rear in ?
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It was pretty much a given. If your car had 8 cylinders, no matter what size, you got at least an 8 3/4" rear. If you got a big block manual trans, you automatically got the Dana 60. That would be cool, but it's just overkill for a 287 ci pickup truck drivetrain.
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Scott
Dodge Dakota
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1/23/2002
09:31:46
| RE: Any advice on puttin an 8 3/4 rear in ?
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You guys all hit the nail on the head as far as my reasons for going to the 8 3/4.
I have a 73 340 Challenger with 4.10's in an 8 3/4 so I would like the flexability of swapping third members between my rides.
My Chally is modified with a 3500 stall and I have never grenaded the 8 3/4 in it. Tough rears form what I can tell.
Alex, I have seen a guy break an axle in a 73 RR with a 9 1/4, lost the wheel completely and F'd up the fender pretty good.
I found a junk yard with an A body 8 3/4, off to pick it up this weekend.
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alex
Dodge Dakota
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1/23/2002
10:17:32
| RE: Any advice on puttin an 8 3/4 rear in ?
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How much does the junkyard want for it?
Where are you? All the Atlanta junkyards want $400 to truck it in from some other out of state junkyard (they have a network??)
The Pick-a-Part junkyards usually have about 3 Mopars that are older than 1985 and all of them have been stripped of their rear ends every time.
Kinda frustrating!
I have actually met a guy running a Ford 9" in his Dak, and I was going to make a smart-a$$ comment to him, but then he went out and ripped off an 11.60 pass, with a 1.80 short time. That's a pretty strong set-up to withstand that kind of launch, so I didn't make fun of him. I've heard that it creates a lot of heat internally to the housing because of how the gears mesh. maybe a strong racing rear, but I'm going to be driving about 25,000 miles a year on whatever axle I put under my daily ride. Can't have something that'll need constant maintenance (like most Ford products)!
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jjj
Dodge Dakota
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1/23/2002
22:59:11
| RE: Any advice on puttin an 8 3/4 rear in ?
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The 8 3/4 is absolutely bulletproof, personally I prefer it over the DANA. 440 4 sp Cuda and the 8 3/4 has never broken. Well when I had the 3.23's in I did snap a couple of teeth off and still continued to run. Wouldn't have of even noticed except I had the 4.88's ready to pop in. The 3.23's were only a temp. thing. Go for it.
Jeff
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Scott
Dodge Dakota
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1/24/2002
12:24:13
| RE: Any advice on puttin an 8 3/4 rear in ?
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ALEX, I'm in VA.
I finally found [after MUCH searching] a junkyard that has alot of older mopars, they even told me they have a few A body 8 3/4's! They are a little expensive, 200 to 300 if I pull it and 300 to 375 if they pull it and these are all prices with no member. Because I have a few set up allready I didnt need one. I know of another junkyard closer to me that has B body rears for 200 and less.
Anyone whos interested let me know via this post and I will post these junkyards #'s on here, I would now but I dont have them with me.
Oh and I also have a guy in Culpeper VA who will redrill the flanges from A body 4" bolt pattern to 4.5" for about 75.
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juniork
Dodge Dakota
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1/24/2002
13:14:13
| RE: Any advice on puttin an 8 3/4 rear in ?
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The B-body 8 3/4 rear is the one that is almost a direct fit. the dakota rear is a 1/4" wider than the B-body. The A-body rear is way to skinny for the dakota, you will be rubbing the inside of the tires.
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Alex
Dodge Dakota
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1/24/2002
13:38:17
| RE: Any advice on puttin an 8 3/4 rear in ?
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Yeah, Scott, watch out for the A-body width. I think other than the B-Body rears, it's the E-body rears that also fit. Just be sure the measurement from brake drum to brake drum is close. Hate to find out that once you get it all mounted that you have to run a 215/75/15 tire. HahHa!
Yeah, if those yards are near Richmond, I can send a friend out to get me one of those old rears..... Where are you in VA?
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Scott
Dodge Dakota
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1/24/2002
14:26:05
| RE: Any advice on puttin an 8 3/4 rear in ?
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Looks like I'm going to have to go out and try to do some measuring myself, I'm hearing so many different things. Ive been told that the A body is a bolt in [as far as the spring perches go]and is just slightly narrower than the Daks, then Ive heard the B body is wider than the Daks and Ive heard that the E bodys is way wider. Im really confused at this point. I have a Challenger so I guess I will go and measure it but its gonna be hard to find an A and B body somone will let me jack up and measure drum to drum.
I tried to write that guy from that site you sent me Alex, but it came back.
Alex, the junkyard that has the fairly cheap B body rears is just south of Fredericksburg [bout a 45 min trip up from Richmond]. As soon as I get the A,B,E body thing figured out and if its B body that works I'll post on here the price and phone# to that junkyard
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alex
Dodge Dakota
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1/24/2002
15:16:45
| RE: Any advice on puttin an 8 3/4 rear in ?
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Scott, that would be great if you could hunt that down. I thought the Dusters (A-body, right??) had the bolt-in rear end, spring pads & all. And I know the B-body will fit, but both the pads and shock mounts must move. Don't worry about the 1/4." That's only 1/8th inch pre side, right?
The A-body tip was from a magazine article from way back in 97 or 96. I'll have to dig that up to confirm, but if your Challenger rear is right, let us know. I may be up at Hollins College (Blacksburg?) and Richmond as well before spring is over. I may be able to swing thru Freddie Burg if the opportunity is there.
Thanks....
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jjj
Dodge Dakota
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1/24/2002
17:59:16
| RE: Any advice on puttin an 8 3/4 rear in ?
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The E body is wider than the B body, I don't remember how much but I have the B body in my 71 Cuda and have 10" tires in the wheel well. You can buy the perches and weld them into the correct place. I think (without going out and looking) that the cars springs are under the axle while the trucks spring are over the axle so the perches should be welded on anyway. Maybe wrong here.
The A body is much narrower than either the E or B body.
Jeff
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jjj
Dodge Dakota
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1/24/2002
19:52:16
| RE: Any advice on puttin an 8 3/4 rear in ?
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8 3/4 specs by body style
track A=55.6" B=59.2"(1962-1970) B=62.0"(71-74)
E=60.7" B=63.4"(71-74 stationwagon)
spring seats center to center
A=43.0" E=46.0" B=44.0"(62-70)
B=47.3"(71-74 all)
Hope this helps don't know what the Dak is.
Jeff
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Scott
Dodge Dakota
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1/24/2002
21:00:13
| RE: Any advice on puttin an 8 3/4 rear in ?
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Thanks Jeff but does anybody happen to know what is used to measure "track"? 2WD Daks have the rear on top of the leafs just like the cars Jeff
Im posting another question on this fourum, it will be if anyone has a B body or A body if they would mind takin off the rear tires and measurin from drum to drum, Im going to measure my Challenger and Daks and post em on here.
Yes Alex, the A body is a Duster, Dart, Valliant, Demon and 65-69 Barracuda. I'm not sure whatcha mean by "bolt in rear" Alex, but I have swapped em out in all Mopars and they all bolt in the same way. Let me know before you waste a Trip I'll make sure they have a rear for ya.
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jjj
Dodge Dakota
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1/25/2002
00:13:57
| RE: Any advice on puttin an 8 3/4 rear in ?
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I think the track is drum to drum or also wheel to wheel, you know the spot they bolt together.
My Dak is a 4X4, I always forget about the 2wd even though my dad has one.
I think the 4X4 springs are on top but again haven't really looked.
jeff
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alex
Dodge Dakota
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1/25/2002
08:11:34
| RE: Any advice on puttin an 8 3/4 rear in ?
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No No, by "bolt-in" I meant being able to jsut drop it in place with minimum welding, etc. I still didn't find that article. But There's one axle housing that the spring pads are already in the right place, what ever car it was. The only thing that'll need to be moved is the shock mounts. That's the one from the article, but I've got to find the article. Maybe over the weekend.
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YA
Dodge Dakota
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1/25/2002
15:09:51
| RE: Any advice on puttin an 8 3/4 rear in ?
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Guy accross the street from me has a 68 Cuda.
I'll see if I can measure it. He may even know the info. we are looking for.
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Scott
Dodge Dakota
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1/27/2002
17:58:18
| RE: Any advice on puttin an 8 3/4 rear in ?
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Thanks for your info again all!!
Yes Alex, Ive been told many times that the A body has the matching spring perch measurment but some have stated the same as you that the Abody 8 3/4 is too narrow. Narrower is fine with me then I can put a high offset to the outside rim on it for serious meats but as Jeff stated [and I have heard a couple of times] that the tires may rub the leaf sprins still bothers me in comiting to buying an over priced A body 8 3/4.
YA.That would be GREAT if you could pull off your neighbors back wheels and get a real measure, I would owe you!!
Again, thanks much for all you fine Moparians help in my little dellima.
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moparjoe20
Dodge Dakota
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1/27/2002
18:18:16
| RE: Any advice on puttin an 8 3/4 rear in ?
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Not sure how much wider a D-100 rear is compared to a dakota rear , When I had an A-body 8 3/4 sitting around from my Valiant I measured it and it was 17" narrower than the rear in my '86 Ram I was going to put that rear in my truck and put some serious tires out back. Only problem is I would have had to move the frame rails in because the axle flanges were on the inside the frame rails.
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CW
GenIII
1/27/2002
19:18:34
| RE: Any advice on puttin an 8 3/4 rear in ?
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The dakota and the D100 are real close. I remember measuring them when my Dad got his first dakota. Way back in '94.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.
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wally gator
Dodge Dakota
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1/27/2002
22:07:05
| RE: Any advice on puttin an 8 3/4 rear in ?
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I,DONT HAVE ANY INFO ON THE 83/4 ,BUT MY WIFES 89 DAKOTA HAS A 81/4 POSI OUT OF A 79 ASPEN IN IT. SHE RUNS 12.36 AT 110 MPH IN THE QUARTER.THIS REAR WAS RUN FOR 4 YRS. IN ASPEN ,AND ALL LAST YEAR IN THE DAKOTA .I HAVE NO INTENTION OF CHANGING IT .IT IS ALSO 3INCHES NARROWER THAN THE STOCK DAKOTAS.THIS TRUCK IS RUN EVERY WEEKEND AT THE DRAG STRIP.SOMETIMES ,IN BOTH BRACKET 2 &STREET CLASS.IT HAS HOOSIER QUICK TIMES ON IT ,325-50 15" A BIG TIRE.
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alex
Dodge Dakota
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1/28/2002
09:04:58
| RE: Any advice on puttin an 8 3/4 rear in ?
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I found the article over the weekend in Mopar Muscle. I forget the date of the issue, but Terry DeLong is the guy who built the truck I am thinking of. The article specifically stated that he bolted in an 8 3/4" rear out of a 71 Duster and all he had to do was move the shock mounts. Then he bolted on the rotors from a 1990 Dak to get the 5-lug set-up in the front. He had no odd looking width problems from the pictures or anything. Terry DeLong owns ProFinish Fiberglass and they make several hoods for Dakotas and Rams, etc. I think if you e-mail Geoff Stunkard at www.moparmusclemagazine.com (he's the editor of the magazine) then I think he will be able to hook you up with Terry. That guy's built lots of Dakotas (I think the last one that was featured in the magazine had a Dana 60 with rear disk brakes!!) and he'll be able to help you even more. Try that out!
alex
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Scott
Dodge Dakota
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1/28/2002
20:27:56
| RE: Any advice on puttin an 8 3/4 rear in ?
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Alex, your a fountain of information!!!
Thanks again, I think I stay with the A body rear because I may have the article way way back in the gray matter of my little brain.
Can you find the date and issue #? I or my uncle may have it. Thanks again!!
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alex
Dodge Dakota
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1/29/2002
08:34:45
| RE: Any advice on puttin an 8 3/4 rear in ?
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Damn! I had it in my pile of stuff to bring to work and left it at home. It was March or April or May of 1999. It has an overhead shot of a Lemon Twist Superbird cast on a red background and that takes up the whole cover. There are several stories inside on the origins of the A/FX classes and how it led to the earliest funny cars. Terry's Dakota is purple, it runs a hybrid 340ci "Magnum" motor (have to read the article), and it has 5-lug 1970's pickup truck style wheels.
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Scott
Dodge Dakota
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1/29/2002
18:22:53
| RE: Any advice on puttin an 8 3/4 rear in ?
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That rings a bell.
Something to be said for us old Mopar gear head readers from wayback huh?
Were you into Mopars before Daks?
PS: I have Mopar mags dating back to the birth of Mopar mags!! remember that?
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alex
Dodge Dakota
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1/30/2002
09:00:13
| RE: Any advice on puttin an 8 3/4 rear in ?
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It turns out that it was Feb 1999. I can scan the article and e-mail it to you zipped if you can open that kind of stuff.
I have been into Mopars since I saw the first episode of the Dukes of Hazzard back in 1977 when I was 5 yrs old. I grew up in a blue-collar neighborhood where all the highschool guys had rumpity-rump cars with rear tires that stuck out from under the fenders and their headers fed straight into cherry bomb mufflers that wern't even attached to the car. They just swung free. Everybody had traction bars and lots of guys made their rear tires fit by cutting open the rear fenders with a skil saw and a carbide blade! The majority of those rumpity-rump rods were GM, but there was this one guy across the street with a 1970 Duster that was the real deal. So, I guess you could say that I've been "under the influence" since I was old enough to make car sounds. And Mopar has always been my brand of preference.
So I have been receiving and keeping Mopar magazines since about 1987. I remember when the muscle car movement reared its ugly head and all those old ladies with all those Hemi Road Runners stored in their barns began turning over their son's cars for chump change and I passed up my fair share of real bargains.
But how was I supposed to afford the restoration on that 1968 Road Runner (there was one for sale for $100 that my Mom wouldn't let me bring home) on the salary of a 17 year old???? Hahahahah it had no interior at all, and the rocker panels were shot thru with rust, but I was ready to take it home! HeeHee....
I could've picked up a 1968 Charger (my dream) 440, 4-spd copper with white interior and bumble bee stripes for $8000 out on a road trip in Kansas, but I had just bought my 1992 Dakota, and again my Mom would've killed me. So I left it there. Guess how much those sell for 10 years later?? hah!
So, yeah, i've got LOTS of resources at home and not just on Dakotas.
Let me know about that article if you want it and can open a zipped jpg file.
Alex
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Scott
Dodge Dakota
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1/30/2002
09:52:11
| RE: Any advice on puttin an 8 3/4 rear in ?
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Sounds like we have quite a bit in common except I did drive my parents crazy bringin home old Mopars.
My first was a primered 71 Duster with a 318 which I promptly blew up and put a 340 in.
Then was a very fast 73 cuda which the guy I bought it from and I put a pretty hot 383, 4spd and 4.30 gears in. That car would spin around at about 50 mph hitting 3rd too hard if I wasent
carefull!!
Then came my 70 440 Cuda which I worked on constantly, but then again street racing on the weekends and winning is a great source of money to buy parts.
And last but not least is the 73 340 Challenger which I still have, I rebuilt it years ago, added ported J heads, custom cam, M1 intake, 650 Holley double pumper, 3000 stall converter and 4.10 gears.
Oops, almost forgot the little green Dak that I have now and you know for shear reliability and fun none of the other cars is as good to me.
Oh and youll probably be sad to know Dad and I just sold his 1 of 1700 or so 69 R/T-S/E Charger, that had a 440mag, limited slip, 727, leather seats, pwr windows and rear defroster. That was a luxo HP car of the time. Unrestored he only got 5000 for it.
Thanks for the date of the mag, Ill check my collection and let you know if I need it.
Thanks again.
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alex
Dodge Dakota
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1/30/2002
11:04:07
| RE: Any advice on puttin an 8 3/4 rear in ?
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You've been doing what I've been dreaming about all those years..... take an old Mopar, build it, and then beat the piss out of it.
I'm sort of formulating two projects right now. I want to buy a second Dakota (92-95 before OBD II) and make it go 12's while getting 20 mpg. I have several powertrain ideas that I'm tossing around. Turbo's, Vortec S/C, Stroker? It will have the racing seats, the 8 3/4" rear, the lowering kit, the Tremec 5-spd, etc etc etc. It will be the racer that's completely awful to drive on the street, but I will drive it on the street anyway!! hahahahhaa
The other one is to buy a 1968 Charger (doesn't have to be anything more than the standard 318 base model) and build it to my own specs. Four wheel discs, MPI 440, 5-spd tranny, make it handle, nice interior, but it looks mostly stock to the naked eye. Again, 13's or 12's at 20 mpg. That'll be the one to take all my money and take decades of work to finish.
All I can say is one of these days.....
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Scott
Dodge Dakota
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1/31/2002
17:29:00
| RE: Any advice on puttin an 8 3/4 rear in ?
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Alex, with out dreams a man is dead.
I am a little older [68] than you and have had 2 cousins and an uncle into Mopars my whole life so I have had the motivation to get fast cars going, I am super competitive so I was always broke because my cars were the fastest.
Did you see one of the latest Mopar mags with the V10 69 Charger? IT WAS SWEET!
On the next set of pages was a Hemi powered Viper [how fitting].
I will tell you, my Challenger has been parked ever since I got my Dak, its alota mess to get and AOD or good 5 or 6 speed in one of those old cars so I havent bothered. I like gettin in my Dak and going pretty fast then still being able to get on the highway and go anywhere.
Dont get me wrong the vehicles of which you speak are the stuff dreams are made of I just couldnt get my wife to let me spend that kinda money on any vehicle.
Let me know when your in the market for an oldie, I know quite a few people who still have old mopars that they would probably part with.
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alex
Dodge Dakota
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1/31/2002
18:32:54
| RE: Any advice on puttin an 8 3/4 rear in ?
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Scott, that's awesome. I appreciate the offer. I just have to bring myself to the point where I can stop spending on this truck so I can have the money to start the next project. But you already know how that goes.
One of these days.
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Dak_Yoda
Dodge Dakota
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2/04/2002
16:04:31
| RE: Any advice on puttin an 8 3/4 rear in ?
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as far as putting in an 8 3/4, i just bought the whole rear, including a 323 chuck for $150, but i've got a 3.55 suregrip thats going in it. it's out of an E body and from backing plate to backing plate it is just about exactly the same width as the one that is now in my 92 dak (~55.5 in.). so it puzzles me how people on this thread said the E body rears were too wide unless they had a dak with a different rear end? anyway this E body one looks like it's gonna work, but i havent looked at any A body rears.
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