Moparts
A-body 8.75 with /6
Posted By: moparmarks
A-body 8.75 with /6 - 01/21/12 02:10 PM
You fellow junk yard dogs need to be checking the rears on all the A-bodies you find. Even /6 cars.
Just picked up this 71 Dart /6 3-sp w/ disc and 8.75
A friend has a 72 Duster that he bought from the original owner. /6 auto w disc and 8.75
Posted By: moparmarks
Re: A-body 8.75 with /6 - 01/21/12 02:11 PM
Looks original to me
Posted By: moparmarks
Re: A-body 8.75 with /6 - 01/21/12 02:13 PM
Heres another 71 Dart /6. About the only thing missing is the rear end. Hmmmmmmm.
Posted By: RapidRobert
Re: A-body 8.75 with /6 - 01/21/12 02:36 PM
Good for you, sometimes Lady Luck comes our way, makes up for the occaisional mishap/misfortune. I imagine Ma used what she had on hand if an item/inventory came up short as stopping the line was the last thing a foreman wanted to have happen on his shift
I have a friend that used to own a 72 Duster with /6 and it had the 8.75 and disc brakes also.We thought it was kind of weird at the time.
Posted By: savoy64
Re: A-body 8.75 with /6 - 01/21/12 05:10 PM
when mopar decides to drop a line they empty out the warehouse of leftovers, an old mopar friend/fiend told me they dumped 426 wedge motors that wouldnt sell (because of the hemi) they restamped the blocks 413 and threw them into newports--he told me to look at the casting marks because those werent changed----at the pickapart i picked up a dana 60 with a pinion snubber under a 72 D200---needless to say i took it home for $90 cut off the flanges/welded on 8.75 axle ends--installed truck 30" axles (8.75) and i had an E body setup------but then my son nabbed it to put under his 70 cuda---damn----the same friend also told me to check close on the 6cyl 3speed A bodies for these 8.75---bob
Posted By: abodyjoe
Re: A-body 8.75 with /6 - 01/21/12 06:55 PM
Quote:
You fellow junk yard dogs need to be checking the rears on all the A-bodies you find. Even /6 cars.
Just picked up this 71 Dart /6 3-sp w/ disc and 8.75
A friend has a 72 Duster that he bought from the original owner. /6 auto w disc and 8.75
not uncommon at all.. have seen quite a few of them. even saw a friends 4 door, had 8 3/4 front disc brake and front sway bar.
just parted this one out a few years ago. six cyl, front disc brake, and 8 3/4. also had a rim blow wheel..
Posted By: HotRodDave
Re: A-body 8.75 with /6 - 01/21/12 07:51 PM
The 70 dart I have for sale is an 8.75 /6 disc brake car 3spd. My 70 duster (also for sale) is an 8.75 318 auto car
Posted By: Kern Dog
Re: A-body 8.75 with /6 - 01/21/12 07:54 PM
The 8.75 axle was part of the HD towing package. It was available even on slant six cars.
Posted By: Pacnorthcuda
Re: A-body 8.75 with /6 - 01/21/12 07:57 PM
and yet a 77 318 Volare I used to own came with a 7.25. Yea, it broke. Sometimes mopar did some weird things.
Posted By: autoxcuda
Re: A-body 8.75 with /6 - 01/21/12 08:13 PM
Quote:
You fellow junk yard dogs need to be checking the rears on all the A-bodies you find. Even /6 cars.
Just picked up this 71 Dart /6 3-sp w/ disc and 8.75
A friend has a 72 Duster that he bought from the original owner. /6 auto w disc and 8.75
I think the manual trans even in /6 tended to get the bigger rear end after 1970. Maybe something to do with the weight of the cars getting more and more as time went on. And/or warranty claims on 7.25 rears.
It seems a lot of these /6 and 318 1970 to 1972 Abodies with 8 3/4 tend to be sort of loaded (weight). A lot seem to have that option package that included the rim blow steering wheel. 8 3/4 and rim blow wheels seem to pair up often. And most of those also have A/C.
I don't think they were dumping this rear end in 70 and 71. I can sort of see late 1972. But Mopar didn't carry a complete 1 year inventory on rear ends.
Posted By: Kern Dog
Re: A-body 8.75 with /6 - 01/21/12 08:24 PM
Either the 7.25 was upgraded over the years or something is wierd. I have seen several LOADED 73-76 slant six 4 door Valiants and Darts with the 7.25 axle. They theoretically should have had the 8.25 if durability was a concern. I stick with the towing package theory. HD axle, Trans cooler in HD radiator and 7 blade fan with fan clutch.
Posted By: autoxcuda
Re: A-body 8.75 with /6 - 01/21/12 08:31 PM
Quote:
Either the 7.25 was upgraded over the years or something is wierd. I have seen several LOADED 73-76 slant six 4 door Valiants and Darts with the 7.25 axle. They theoretically should have had the 8.25 if durability was a concern. I stick with the towing package theory. HD axle, Trans cooler in HD radiator and 7 blade fan with fan clutch.
Oh I agree. The later cars seem skimpy with the 8 1/4" rear. Although I do know of a 74 Dart Sport convertiple with /6 manual trans and 8 1/4". I'm thinking the manual trans did it.
But I don't think all those car we're finding the rear ends have trailer towing. MoparMarks, does the fender tag on those cars show trailer towing? Is trailer towing even on the fender tag?
Now IIRC, disk brakes automatically got you HD suspension.
Posted By: Kern Dog
Re: A-body 8.75 with /6 - 01/21/12 08:33 PM
Ah... disc brakes! THAT makes sense too......
Posted By: autoxcuda
Re: A-body 8.75 with /6 - 01/21/12 08:52 PM
Quote:
Ah... disc brakes! THAT makes sense too......
Of the 5 cars mentioned on this thread with 8 3/4 rears, 5 had disc brakes.
This one didn't mention what brakes it had?:
Quote:
My 70 duster (also for sale) is an 8.75 318 auto car
This one is not certain what rear end it had originally. -but note it did have A/C, 318, vinyl top and the bigger looking front drums-
Quote:
Heres another 71 Dart /6. About the only thing missing is the rear end. Hmmmmmmm.
Posted By: copperSwinger
Re: A-body 8.75 with /6 - 01/22/12 04:26 AM
my 71 swinger 318 had a 8.75. drums no a/c no towing package no sway bar
Posted By: slantzilla
Re: A-body 8.75 with /6 - 01/22/12 04:21 PM
I would guess you got it when you spec'ed disc or 10" drums. I've never seen any 10" drums for small bolt pattern 7-1/4" rears.
In '73 they started using the 10" drums on BBP 7-1/4" with the BBP disc.
Posted By: DoctorDiff
Re: A-body 8.75 with /6 - 01/22/12 04:37 PM
10" drums were optional on pre '73 5 x 4" bolt pattern 7 1/4" rears.
Posted By: Rug_Trucker
Re: A-body 8.75 with /6 - 01/22/12 07:05 PM
The A bodies around here usually never make it past the front gate at PullaPart with the 8 3/4's or disc brakes. There is a Mopar guy that snags them all.
Posted By: pinkduster
Re: A-body 8.75 with /6 - 01/23/12 02:34 AM
My 71 Duster Twister has 10" drums and the 7.25 rear.
The local old time junkyard had (for years) a 70 Duster /6 3speed car with the 8.75 rear, but somebody took the axles and brakes a long time ago and everything was rusty as hell so nobody ever bought it.
I've been into A-bodies for 25+ years and sometimes it would surprise you to find 8.75 rears under cars that you wouldn't think would have them. I learned to look under EVERY car, cause you just never know.
Posted By: serano
Re: A-body 8.75 with /6 - 01/23/12 02:44 AM
Yeah;I pass nothing up,when they come in I check.
Posted By: Kern Dog
Re: A-body 8.75 with /6 - 01/23/12 02:47 AM
The two A body 8.75 axles that I have found at self serve wrecking yards were both in 4 door, slant six cars. I didn't check the fender tags. What is the code for the towing package anyway?
Anyone with a slant 6 or 318 A-body have a build sheet proving it actually left the factory with said 8-3/4"?
Posted By: QuickBpBp
Re: A-body 8.75 with /6 - 01/23/12 02:54 AM
Quote:
You fellow junk yard dogs need to be checking the rears on all the A-bodies you find. Even /6 cars.
Just picked up this 71 Dart /6 3-sp w/ disc and 8.75
A friend has a 72 Duster that he bought from the original owner. /6 auto w disc and 8.75
I thought everyone knew this already...I picked up a 3.23 posi one locally for $50 and got my buddy everything else for $150.... 
The car:
.JPG "7032261-HPIM0217(Small).JPG")
Posted By: Kern Dog
Re: A-body 8.75 with /6 - 01/23/12 02:58 AM
A POSI in a Mopar?
Chevy 10 or 12 bolt?
Posted By: QuickBpBp
Re: A-body 8.75 with /6 - 01/23/12 03:02 AM
Quote:
A POSI in a Mopar?
Chevy 10 or 12 bolt?
Yes I am no purist on lingo...Also got one out of another Duster with 4:11's...
Posted By: Kern Dog
Re: A-body 8.75 with /6 - 01/23/12 03:04 AM
Gotcha again... NO 4.11 gears in any traditional Mopar axle.... 4.10 was the closest!
Posted By: QuickBpBp
Re: A-body 8.75 with /6 - 01/23/12 03:08 AM
Quote:
Gotcha again... NO 4.11 gears in any traditional Mopar axle.... 4.10 was the closest!
Baited you on that one....Real Mopar guys will tell you otherwise....Let's see if they show up and tell the truth.... 
Posted By: Pale_Roader
Re: A-body 8.75 with /6 - 01/23/12 12:54 PM
I always thought an A-body with a slant 6, 4-speed and 8 3/4" would be the car to get if you wanted absolutely BOMBproof combo...
On the other hand, i got the other kind ov luck... even my stick E-body didn't come with an 8 3/4". Now i gotta yank the 7 1/4 out before i do anything else.
Posted By: Pyper70
Re: A-body 8.75 with /6 - 01/23/12 02:26 PM
Im no stranger to the fact either. I built my Slant 6 70 Dart with an 8.75 rear end. My slant physically broke the gears in the 7 1/4. I didn't want to be stranded again so I slipped in a 70 B-Body 8.75. Freshened up the 3.23s and I was off again. My slant was notoriously a torque monster and breaking stuff left and right.
Posted By: cogen80
Re: A-body 8.75 with /6 - 01/23/12 02:29 PM
Quote:
Anyone with a slant 6 or 318 A-body have a build sheet proving it actually left the factory with said 8-3/4"?
you don't think its possible for a slant to have come with a 8 3/4?
Anything was possible, however I've yet to see any definitive proof. EVER.
Posted By: moparmarks
Re: A-body 8.75 with /6 - 01/23/12 03:15 PM
I'll see if this Dart has the tag and sheet. Then we'll see.
Posted By: Rhinodart
Re: A-body 8.75 with /6 - 01/23/12 11:57 PM
Seen dozens of them. I drove a 68 Dart GT convertible that I bought in South Carolina in 1984 and it had the towing package and it was a 318 with a 727 trans and 8-3/4. You might have seen the car, I sold it to Karl Sturm who owns the Umbrella People that sells the Mopar umbrellas and other toys at all the major Mopar shows. It is now white with a blue interior and a crossram 340. If I remember correctly it had the towing package on the fender tag. I know for sure it had it on the broadcast sheet.
I also have a 69 Dart 4-door with a 318 and A/C with a 727 and 8-3/4. It also has ralley suspension with drum brakes all around. I bought it from the original owners son and it seems he wanted a 340 Swinger but needed a 4-door for his family so he ordered it to have all the options of a 340 Swinger but the top engine in a 4-door was the 318. Pretty interesting car and I am still thinking I may restore it and make a good driver out of it one day. It even came with 5.5J wheels and dog dish hubcaps and vinyl flooring!
Posted By: T2R9
Re: A-body 8.75 with /6 - 01/24/12 12:09 AM
Yup
My first Mopar. 72 Duster /6 Auto, Disc brakes, 8 3/4 and front sway bar.
Posted By: Steve340
Re: A-body 8.75 with /6 - 01/25/12 01:48 AM
One of my Dusters. 1971 318, A904 and 3.23 8 3/4 rear end. It had the console w/orange buckets and door panels. I changed them to black after I got it though. I was 2nd owner. Notice the trailer hitch on the back.
.jpg "7035482-orangeduster(1).jpg")
Posted By: Rapid340
Re: A-body 8.75 with /6 - 01/25/12 04:43 AM
Way more /6 abody cars with 8.75's than 318's.
Posted By: HotRodDave
Re: A-body 8.75 with /6 - 02/07/12 05:47 PM
So there was no broadcast sheet in the dart but the duster has one, what code do I look for?
Just post a photo of the build sheet.
I have a 71 dart w a 225 and an 8 3/4. Bought the whole car for $150. Beautiful grill, bezels, hood, front/rear valance, rim blow steering wheel, and the 8 3/4. What a rust bucket, but some nice parts.