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Rearend Swap
https://www.slantsix.org/forum/viewtopic.php?t=36223		 Page 1 of 1
Author:  dusterguy225 [ Fri Jul 10, 2009 11:15 pm ]
Post subject:  Rearend Swap
I want to swap my rear out for somthing of a better gear (3.23?) especially because I will eventually swap a 4 speed in, but I want to keep the sbp because I want to keep my cragars and I definatly cant afford bbp disc setup to use with an 8 1/4 rear. So, would it be worth finding an older rear to swap in, or to just replace the gear in my current 7 1/4? I would also like to get suregrip too. Does anyone still make gears for the 7 1/4?

Also, I have never changed rear gears before, how hard would it be to do so?
Author:  Joshie225 [ Sat Jul 11, 2009 3:06 am ]
Post subject: 
Read the factory service manual and you'll learn just how involved it is to change the ring and pinion. Sounds like you want a Sure-Grip 3.23 geared small bolt pattern 7 1/4 or 8 3/4. If you can't afford late disc brakes for the front you probably can't afford an 8 3/4 either. Are you really spinning the tires enough that Sure-Grip would be of benefit?
Author:  dakight [ Sat Jul 11, 2009 5:48 am ]
Post subject: 
Gears are available but the minimum ratio you can get now is 3.55. Jaws Gear has the best price; the gear set plus installation kit will run around $350.00.

Check car-part.com for a used rear axle.
Author:  Rug_Trucker [ Sat Jul 11, 2009 12:36 pm ]
Post subject: 
A body with 3 speeds came with 3:23 in the 198 engines. That is what my Duster has.

I will keep an eye out for one at Pull-A-Part. Yanked to 8 3/4's yesterday. One from a 74 New Yorker, the other from a 74 Maxivan. Rearends are around $100 tax and all.
Author:  dusterguy225 [ Sun Jul 12, 2009 1:49 pm ]
Post subject: 
Quote:
Are you really spinning the tires enough that Sure-Grip would be of benefit?
I don't need it, but it would be nice
Quote:
Yanked to 8 3/4's yesterday. One from a 74 New Yorker, the other from a 74 Maxivan. Rearends are around $100 tax and all.
Could you fit them under an A-Body though? I guess if I got one, I could sell it, and look for one that would fit.
Author:  DusterIdiot [ Sun Jul 12, 2009 3:40 pm ]
Post subject:  Not the easy way..
Quote:
Could you fit them under an A-Body though?
If you grab an 8 3/4" out of something else (except the late 60's B-body),
you'll have to have it shortened and have the axle shafts re-done...it's usually an amiable trade off...you can get a cheap C-body rear and do that or spend the same amount on getting a ready to fit A-body 8 3/4"... the C-body version would have the LBP if you resplined the axle shafts vs. the OEM A-body axle have SBP... which is nice if you decide to redo your front brakes to the 1973+ discs...

-D.idiot
Author:  Rug_Trucker [ Sun Jul 12, 2009 6:18 pm ]
Post subject: 
Well pull a part has F bodies occasioanlly. They have 8.25's. You can check them on line.

One thing about the one in Nashville........lots of the good Mopar stuff is gone before it hits the yard :evil:

All the front disc assemblies are gone before they hit the yard. One of my last duties at Lowes was loading up 10 wheel barrows for the manager of Pull a Part. I told him how much I liked the place. Then asked about the Mopar stuff....he was silent! :P
Author:  dusterguy225 [ Mon Jul 13, 2009 8:27 pm ]
Post subject: 
How much do you think and A-body 8 3/4 would be vs. a reworked C-body version?(cant do it myself) Also, would it be cheaper to find, and install gears in my 7 1/4 vs. and 8 3/4? I would like the bbp, but I would have to find bbp 14x6 cragars and sell my sbp ones, discs sure would be nice
Quote:
Well pull a part has F bodies occasioanlly. They have 8.25's. You can check them on line.

One thing about the one in Nashville........lots of the good Mopar stuff is gone before it hits the yard :evil:
I pulled my super six out of an 79 Volare, I guess I shoulda snagged the rear too...

There was also a 73 duster there too, most of the parts were gone, except a pair of practially mint tail lights and trim, I went back to get my tools (took maybe 5 min) and when I got back, they were gone! :shock:
Author:  dusterguy225 [ Mon Jul 13, 2009 11:59 pm ]
Post subject: 
I think I might call this guy and see if he will part with that 8 3/4 or has one he will sell
Author:  Rug_Trucker [ Tue Jul 14, 2009 5:08 am ]
Post subject: 
Quote:
I think I might call this guy and see if he will part with that 8 3/4 or has one he will sell
Didn't see that. He sure wants premium prices for crap. He has a bunch of ads for Mopars on CL. I had a kid call me on Saturday for the Ebody rear I have forsale. Wanted me to measure it :roll: I told him it was too wide. Never heard back from him.

If you want that rear you better call him quick! That kid that called me was 10 miles away.
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