Re: green bearing questions
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Re: green bearing questions
- From: Dan McCormack <mcwheels@xxxxxxxxxxxxxx>
- Date: Sat, 9 Aug 2008 23:28:32 -0400
Steve, All I can tell you is that my freind is running a B body rear in his
73 Duster 340. It is not narrowed and he's not using any special offset
wheels and has no problems with tire clearance even with big tires. Read
this below and the second chart showing the actual flange to flange
measurements and not just the track and it might explain why.
Dan
Section 3: Part Numbers and Demensions of Axles and Housings.
The following chart can be found in the Mopar Performance Chassis Manual.
the distance between spring perches is an accurate reference, however the
Track listing is the source of a lot of misconceptions. Track is the
distance between the two tires, and includes a proportion of the actual tire
track, or patch where it contacts the ground. The chart below tends to lead
people to believe that all 62-70 B-body 8-3/4 rearends are the same width,
not true!
Body line Track Perches Notes
A-body, 65-72 55.6 43.0 4" lug bolt circle
B-body, 62-70 59.2 44.0
B-body, 71-72 62.0 47.3
B-body station wagon, 71-72 63.4 47.3
C-body, 64-72 63.4 47.3
D-body, 64-72 63.4 47.3
E-body, 70-74 60.7 46.0
Axle Housing and Axle demensions
The following is a listing of flange to flange widths for various year
8-3/4" housings. This is a measure of the bare housing, with brake backing
plates removed, from the outside of the flange across to the outside of the
other flange. Chrysler part numbers are listed as well for the purpose of
showing a distinction between some housings and axles.
Part# Application Flange to Flange Width Notes
1045744
1945745
2070259
2070269
2070270
2070960
57-62 fullsize 63-64 Chrysler/880 55-5/8" (est.) 8-1/4" axles 57-61
have different housing part numbers.
SG axle shorter than open rear axle, except for 1964 models.
65 C-body unknown axle 2404228 same as A-100 vans and trucks.
2800175 66 C-body unknown
2881003 69 C-body 56-7/16"
2881310 69 C-body wagon 59-7/64"
70 C-body 57-3/4"
2070231 60-62 Imperial unknown Imperials: 57-63 SG, all 64 axle
1829267
2070961 63-64 Imperial unknown Imperials: 57-63 open axle 1675449
2404208 65-66 Imperial unknown different from above axles, 2404139
2800224 69 Imperial unknown
2070539 62-63 B-body
64 Max Wedge 53-1/4" a.. Parts Manuals list four different axles for
this housing:
b.. 2070573 - 741 case w/o SG 30-1/2" overall;
c.. 2404003 - 742 case w/o SG 30-1/2" overall;
d.. 2070695 - 741 case SG 30-7/16" overall;
e.. 2404050 - 742 case SG 30-7/16" overall;
2404271 64 B-body except Max Wedge. 55-5/8" (est) 1/8" - 1/4" narrower
than 2070270 (fullsize Chrysler) housing. axle length 31-1/2" overall.
2404143 65 B-body 54-1/2" uses axle 2404223
2643409 66-67 B-body 54-1/4"
2852838 68-69 B-body 54-15/16" same as 1970 B-body, 1/32" difference
3432295 70 B-body 54-29/32" same as 1968-69 B-body, 1/32" difference
3507502 71-73 B-body 57-47/64"
3507501 71-73 C-body
71-73 B-body SW
59-1/8"
2800227
3432647
3432295
66-72 A-body 52-13/64" (70-71) 52-37/64" (72) 4" bolt circle, used
10x1-3/4" drums. These demensions come from 1970,71,72 Factory Parts Manuals
2852882 70-74 E-body 56-7/16"
----- Original Message -----
From: "Steve Chervinsky" <63hemipolara@xxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx>
Sent: Saturday, August 09, 2008 7:08 AM
Subject: Re: green bearing questions
Here is the dims of the 8 3/4 axles, yes the spring perches only have
to be moved an inch inwards, but overall the diff is 4" wider:
Because the 8-3/4" axle was available in most body lines, there are a
variety of housings available. Following are some of the passenger car
axle dimensions and notations. <br>
The Perches dimension is the distance center to center between the
spring mount perches.
Body Line Track Perches Notes
Dimensions are in inches.
A-body, 65-72 55.6 43.0
B-body, 62-70 59.2 44.0
B-body, 71-72 62.0 47.3
B-body, 71-72 63.4 47.3 station wagon
C-body, 64-72 63.4 47.3
D-body, 64-72 63.4 47.3
E-body, 70-74 60.7 46.0
Dodge, Chrysler, Plymouth Rear Axle Dimensions
Rear Axle dimensions and diagram for Chrysler, Plymouth, and Dodge
cars. Rear Axle's. covers A-Body, B-Body, C-Body, E-Body and F-Body.
Year
Axle
(A)
(B)
(C)
1963 - 1972
7 1/4" A-Body 53.200"
43.02"
10.09"
1973 - 1976
7 1/4" A-Body 51.400"
43.02"
10.09"
1973 - 1976
8 1/4" A-Body 51.400"
43.02"
11.69"
All
8 1/4" B-Body 57.800"
47.30"
11.69"
All
8 1/4" C-Body 59.200"
47.30"
11.69"
All
8 1/4" F-Body 54.340"
44.46"
11.69"
All
8 3/4" A-Body 51.400"
43.00"
12.35"
1962 - 1970
8 3/4" B-Body 55.000"
44.00"
12.35"
1971 -1974
8 3/4" B-Body 57.800"
47.30"
12.35"
All
8 3/4" E-Body 56.500"
46.00"
12.35"
1971 -1974
8 3/4" B-Body S.W. 59.200"
47.30"
12.35"
All
9 1/4" B-Body 57.800"
47.30"
11.69"
All
9 1/4" C-Body 59.200"
47.30"
11.69"
1966 - 1970
9 1/4" B-Body 54.936"
44.00"
13.47"
All
9 1/4" E-Body 56.500"
46.30"
13.47"
(A) = Flange to flange.
(B) = Leaf spring centerline to leaf spring centerline..
(C) = Centerline of axle shaft to centerline of rear universal joint.
Illustration & Information from Chrysler Performance Upgrades, by
Frank Adkins. Published by CarTech as part of their SA Design series.
Check the following link as well: http://www.mymopar.com/axledims.htm
It is not a direct bolt in and offset wheels would have to be used if
the axles are not narrowed as evident in all articles of the dims of
the 8 3/4 A and B body.
----
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