hidden_threat
Well-Known Member
I recently was given and opportunity to aquire a differential for my 73 Duster. I was told it is an 8¾ from an early 60' s Dodge pick-up but I am not sure any help is appreciated.
Differential Identification
- Thread starter hidden_threat
- Start date
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That's an 8-3/4
65Val
Average Length Member
You don't want it....tapered axles... and it's probably too long.
fishy68
Tyr Fryr's Inc.
Agreed. Plus with it laying in the weeds it's probably all rusted up inside. Only way I'd take it is if it were free
dusterdan
Sublime Member
Yeaa that's a project at best...the housing is usable for your duster but you're gonna have to cut it (make it narrower) and reposition the spring perches. The center section will have to be completley gone through, like others said its outside and gonna be rusty. And axles, yep you'll need new ones of those too. Nice find if you can get it for free or near free
Captainkirk
Old School Mopar Warrior
Yep-8-3/4.
Here's a guide for ID'ing Chrysler rear ends:
http://www.mopar1.us/875.html
Basically, look on the left front (lower) side to identify if it's a 657, 741, 742, or 489 pumpkin. There should be a tag on one of the pumpkin studs (if still there) giving the gear ratio (e.g. 3.55= 3.55:1) and another designating Sure Grip. Easy way to tell SG is rotate pinion in direction of normal rotation, see if both axles turn the same direction. Easy way to ballpark ratio is put a mark on one axle, rotate pinion. Count number of pinion rotations to one complete revolution of the axle. Good luck
Here's a guide for ID'ing Chrysler rear ends:
http://www.mopar1.us/875.html
Basically, look on the left front (lower) side to identify if it's a 657, 741, 742, or 489 pumpkin. There should be a tag on one of the pumpkin studs (if still there) giving the gear ratio (e.g. 3.55= 3.55:1) and another designating Sure Grip. Easy way to tell SG is rotate pinion in direction of normal rotation, see if both axles turn the same direction. Easy way to ballpark ratio is put a mark on one axle, rotate pinion. Count number of pinion rotations to one complete revolution of the axle. Good luck
fishy68
Tyr Fryr's Inc.
Yeaa that's a project at best...the housing is usable for your duster but you're gonna have to cut it (make it narrower) and reposition the spring perches. The center section will have to be completley gone through, like others said its outside and gonna be rusty. And axles, yep you'll need new ones of those too. Nice find if you can get it for free or near free
Yep, and he'll need to buy housing ends too cause ends for the tapered axles won't work for a newer style axle
hidden_threat
Well-Known Member
Well it sounds like even though it is free it would cost as much to rebuild this as to find an A-body 8¾ that's a direct bolt in. Thanks for the excellent information.
Well if it's free, I would take it. You can save the center section anyway for future use.
DoctorDiff
Well-Known Member
I strongly recommend you take that (free) rearend.
If you are interested in selling a part or 2 from the assembly, please E-mail me.
[email protected]
If you are interested in selling a part or 2 from the assembly, please E-mail me.
[email protected]
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