Does any one have a empty a-body housing to measure? I got one at a swap that is supposed to be cut to a-body length.I get 53 7/8 is that right? I also got a b-body rear end for the chunk and brakes.Thanks,Todd
Another 8 3/4 question
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Dusterdude72
IN MOPAR MUSCLE MAGAZINE
Another member recently posted this in another thread, hope this helps
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"
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"
fishy68
Tyr Fryr's Inc.
53-7/8" is about 1-1/4" too wide. You can use it if you find axles to fit and wheels with more offset.
damnimcooltom
Too Cool For School
Yes, I just measured a couple of housings I had, and they matched that list. The A body is 52 5/8", bare.
fishy68
Tyr Fryr's Inc.
That's pretty close. Should work ok.
damnimcooltom
Too Cool For School
Some people cut them a little shorter than stock, so when they add big bolt shafts that use the B/E body brakes, they end up closer to the normal full rear-end width of the stock A Body axle with its narrower brakes.
fishy68
Tyr Fryr's Inc.
Good point.
So would I use stock lenght axles or the a-body w/b-body brake longer axles?
damnimcooltom
Too Cool For School
The people that I've know that did this needed to use custom length axles. We switched to big bolt pattern and B Body brakes.
I found one site that used 51.4" flange to flange . 52 5/8 was the most common # though.
I just dropped my axles off at the driveline shop today and would prefer to have the housing cut only once...lol....
Now I understand the whole big brakes vs A-body brakes . it's the width of the shoe that is the difference . right ....? That never occurred to me before .
I just dropped my axles off at the driveline shop today and would prefer to have the housing cut only once...lol....
Now I understand the whole big brakes vs A-body brakes . it's the width of the shoe that is the difference . right ....? That never occurred to me before .
damnimcooltom
Too Cool For School
Te shoe is wider, yes, but the offset is different, too. The distance between the bearing and the wheel flange is different on the small bolt pattern axles than it is for the big bolt axles. Some people make big bolt pattern axles with the A Body offset so that they can reuse the redrilled A Body brakes, but I'd rather just swap to the B/E stuff, myself. It's cheaper than having the drilling done, and still being confined to the more expensive small bolt drums in the future.
damnimcooltom
Too Cool For School
I've never had an issue with a stock disc valve.
fishy68
Tyr Fryr's Inc.
51.4" is wrong. That website needs to take it down because it's caused so much confusion over the yrs. 52-5/8" is the correct stock width.
Like Tom, I haven't had a problem using the stock valve either. The stock valve is not really a proportioning valve. A proportioning valve limits how much fluid is sent to the rear brakes. The stock valve on our A-bodies is just a safety valve. It only senses when a brake line blows (either front or rear) and the valve inside moves to close off the blown side and apply the fluid to the good side. Some factory A-body valves also have a residual pressure valve that gives the brakes a firmer pedal.
I have a set of backing plates I took off a B-body a while back. PM me if you are interested. Their bare backing plates but they do have the parking brake hardware so all you need is to rebuild the brakes, which you should do on any set of brakes you put on your car.
fishy68
Tyr Fryr's Inc.
calling now
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