7.25 rear end dimensions

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iw378

iw378

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Long story short. I yanked my a body 8.25 rear end out of my barracuda and installed an a body 8 and 3 quarter in it. Gonna give the 8.25 to a friend of mine so he can upgrade his 7.25. Do any of you guys know the outside of drum to drum dimension of the 7.25 or would it be the same as the 8.25 ? (wheel backspace is in question)
Thanks
 
straightlinespeed said:
View attachment 1714835254
Click to expand...

Why won't this chart DIE? It's not accurate for most of the rear ends listed. Like the B body rear end. There are 4 different B-body 8.75" width's for '62-70. 4. Some of the other measurements don't work out either, like the A-body 8 3/4 measurement which is more than an inch off.

I can say that I measured the BBP 7.25" rear out of my '74 Duster at 51.5" flange to flange, so it is fairly accurate on that measurement. How the SBP 7.25's compare I don't know. I have seen someone say that the A-body 8.25's were also 51.5", but I haven't personally measured one to confirm.

What size tires/rims does your friend run? If they're close to stock dimensions, the swap shouldn't cause any major problems regardless. If they're maxed out in the wheel wells it might be a different story.

Here's a better list of the flange-flange measurements for the 8 3/4's. This isn't my list, but I can say I have personally confirmed the A body, E body, 65-67 and 68-70 B body, 65-69 C body and 65-71 D100 measurements listed.

Housing widths, flange to flange (8.75" rear axle)

A BODY
'66-'72= 52 5/8"

B BODY
'62-'63= 53 1/4" (And '64 Max Wedge)
'64 = 55 5/8" (Exc. Max Wedge)
'65-'67= 54 1/4"
'68-'70= 54 15/16"
'71-'74= 57 7/8"
'71-'73 wagon= 59 7/16"

C BODY
'65-'69= 56 3/4"
'70-'71= 57 7/8" (Chrysler & Fury)
'70-'74= 59 7/16" (and '69 wagon)

IMPERIAL
'65-'66= 57"
'67-'69= 57 3/8"
'70-'71= 54 3/4"
'72-'73= 59 5/8"

E BODY
'70-'74= 56 31/64"

A100
'65-'70= 56 3/4"

D100
'65-'71= 58 5/16"
'72-'74= 59 7/16"

F BODY
’76-’80= 54.34” (8 1/4 axle!)
 
It's been around forever, and some of the measurements line up well enough for folks to think it's accurate. Especially since most folks don't usually have all of those different measurements. I can't confirm most of the 8.25 or 9.25" measurements on the chart, but I know for a fact that it's completely wrong regarding the A-body 8.75 and B-body 8.75's if you consider that entire year range. It doesn't list the C-body 8.75's at all, and doesn't give a different measurement for the Imperials, which are different.

I have posted this list for awhile, I'm pretty sure I found it here or another of the mopar forums. I've added the F-body measurements as they came from a trusted source, and as I mentioned I've been able to confirm myself quite a few of the measurements listed, and all have been spot on so far.

8 3/4" axle shaft lengths measured from the tip of the splined end
to the outside of the flange:

A BODY
'66-'72= 27 11/16"

B BODY
'65-'67= 28 7/8"
'68-'70= 29 3/16"
'71-'74= 30 5/8"
'71-'73 wagon= 31 21/64"

C BODY
'65-'69= 30"
'70-'71= 30 5/8" (Chrysler & Fury)
'70-'73= 31 21/64" (and '69 wagon)


IMPERIAL (Large Bolt Pattern)
'65-'66= 30 1/8"
'67-'69= 30 5/16"
'70-'71= 29"
'72-'73= 31 7/16"

E BODY
'70-'74= 29 31/32"

A100
'65-'70= 30"

D100
'65-'71= 31 1/8"
'72-'74= 31 21/64
...........................................
...........................................

8.75" Housing widths, flange to flange

A BODY
'66-'72= 52 5/8"

B BODY
'62-'63= 53 1/4" (And '64 Max Wedge)
'64 = 55 5/8" (Exc. Max Wedge)
'65-'67= 54 1/4"
'68-'70= 54 15/16"
'71-'74= 57 7/8"
'71-'73 wagon= 59 7/16"

C BODY
'65-'69= 56 3/4"
'70-'71= 57 7/8" (Chrysler & Fury)
'70-'74= 59 7/16" (and '69 wagon)

IMPERIAL
'65-'66= 57"
'67-'69= 57 3/8"
'70-'71= 54 3/4"
'72-'73= 59 5/8"

E BODY
'70-'74= 56 31/64"

A100
'65-'70= 56 3/4"

D100
'65-'71= 58 5/16"
'72-'74= 59 7/16"

F BODY
’76-’80= 54.34” (8 1/4 axle!)

.........................................
.........................................

8.75" Rear end widths, drum-to-drum:

A BODY
'66-'72= 57 1/8"

B BODY
'62-'63= 58 1/2" (And '64 Max Wedge)
'64 = 60 7/8" (Exc.Max Wedge)
'65-'67= 59 1/2"
'68-'70= 60 1/8"
'71-'74= 63"
'71-'73 wagon= 64 3/8"

C BODY

'65-'69= 61.75"
'70-'71= 63.0" (Chrysler & Fury)
'70-'73= 64 3/8" (and '69 wagon)

IMPERIAL
'65-'66= 61 15/16"
'67-'69= 62 5/16"
'70-'71= 59 3/4"
'72-'73= 64 9/16"

E BODY
'70-'74= 61 5/8"

A100
'65-'70= 61 3/4"

D100
'65-'71= 63 15/16"
'72-'74= 64 3/8"

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Spring perch widths (center-to-center)

A BODY
'66-73= 43"

B BODY
'62-'70= 44"
'71-'74= 47.3"

C BODY
'65-'73= 46"

E BODY
'70-'74= 46"

F BODY
’76-’80= 44.5” (8 1/4)
 
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