Moparts Tech Archive
Rear Axle
disclaimer.
Part I of this guide was authored by Gary Lewallen (a.k.a. Vaanth)
for the MML and Internet community. Gary originally published
this document in January 1998. Part II was authored by Doug Ahern
as a supplement to Gary's piece.
===========================================================================
A Chrysler 8-3/4" Rear Axle Guide, Part I.
------------------------------------------
Author: Gary Lewallen (a.k.a. Vaanth)
Date: 12 January 1998
Updated: 20 January 2000
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Introduction
------------
The Chrysler 8-3/4" rear axle assembly was introduced in 1957. It is a
banjo-type ( Hotchkiss ) axle, ie. the differential is contained in a
removable carrier assembly. The axle has an 8-3/4" diameter ring gear.
There are three basic types available distinguished by their drive pinion
stem diameter. The 8-3/4" axle was the primary axle assembly used in
most car lines through 1972.
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8-3/4" Axle Center Section Types
--------------------------------
The 8-3/4" axle was available in three basic types. The types are differentiated
by the pinion stem diameter....1-3/8", 1-3/4", 1-7/8". The choice
of axle pinion assembly was determined based on the application.
1-3/8" small stem pinion... (a.k.a. '741')...
Carrier casting numbers: 1820657 (1957-1964), 2070741 (1964-1972).
This assembly was typically used in low weight/low horsepower
applications through low weight/medium horsepower and high weight/low
horsepower applications.
Pinion depth and bearing preload is set with shims. Differential
bearing setting (ie. backlash ) is set with threaded adjusters.
1-3/4" large stem pinion... (a.k.a. '742')...
Carrier casting numbers: 1634985 (1957-1964), 2070742 (~1961-1969).
This assembly was replaced by a phase-in of the 1-7/8" pinion starting
in the 1969 model year. 1970 RW (Plymouth and Dodge mid-size) were
the last models to use the 1-3/4" which appeared in a 2881489 case.
This assembly was typically used in high weight/medium horsepower
applications through high weight/high horsepower applications.
Pinion depth and bearing preload is set with shims. Differential
bearing setting (ie. backlash ) is set with threaded adjusters.
1-7/8" tapered stem pinion... (aka. '489')...
Carrier casting numbers: 2881488, 2881489 (1969-1974).
This assembly was introduced in 1969 and was phased-in to replace the
1-3/4" unit through 1970. Note: the 1-3/4" pinion also appeared in
some '489' carriers during this period. By 1973, the '489' was the only
unit available in passenger car applications.
This assembly was typically used in high weight/medium horsepower
applications through high weight/high horsepower applications.
Pinion depth is set with shims, preload is set with a crush sleeve.
Differential bearing setting (i.e. backlash ) is set with threaded adjusters.
All 8-3/4" carrier assemblies can be identified externally by the
casting numbers. Additionally, the '741' commonly has a large X cast on
the left side, the '742' may have a large 2 cast on the left side, and the
'489' has a large 9 cast on the left side. Through 1965, the factory
ratio was stamped on the identification boss, followed by an 'S' if
Sure Grip equipped. After 1965, a tag was affixed under one of the
carrier mounting nuts to identify the ratio. If Sure Grip equipped,
an additional Sure Grip lube tag was sometimes affixed; later years
sometimes had the filler plug painted orange.
Gear ratios available on the 8-3/4" axle through the years include:
2.76, 2.93, 3.23, 3.31, 3.55, 3.73, 3.91, 4.10, 4.56, 4.89, 5.17,
5.57. On OEM gear sets, the ratio is usually stamped on the ring gear
edge. Ratio may be determined by the number of teeth on the ring
gear divided by the number of teeth on the pinion gear or by counting
the ratio of the number of turns of the pinion relative to one turn
of the axle shaft.
The 8-3/4" center section is removed from the front of the housing.
It is retained by 10 nuts on studs in the housing. The rear of the
housing is smooth, the back is welded onto the main housing. The
axle tubes are part of the overall housing. To remove the center
section, remove the wheels, brake drums, and drive shaft (note: pre-
65 units have a pressed-on brake hub...requires a puller for removal).
Remove the axle shafts, 5 bolts on the backing plate flange on post
64 units, use puller for pressed-in pre-65 units. Remove the 10
nuts on the housing studs around the carrier perimeter. Remove the
carrier...may require prying, fluid will drain when carrier gasket
seal is broken.
Interchange Notes:
Any 8-3/4" center section may be interchanged for another as an entire
assembly, with the exception of center sections manufactured prior to
model year 1964 (See Part II, Section 1: "Thrust Block Variations").
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Sure Grip
---------
Sure Grip is the Chrysler name for a limited slip differential. It
was optional on the 8-3/4" axles, 1958-1974. Two styles were used.
1958-1969 used the Dana Power-Lok (# 2881487). This unit utilized
clutches for the differential locking action. The Power-Lok can be
rebuilt using kit # 2070845 ( Mopar Performance [MP] # P4529484 ). In
this assembly, axle driveshaft end thrust is taken by the thrust
block assembly (replacement # 2881313). This Sure Grip appeared in the
'741' and '742' assemblies. The axle bearings are: 25590 (Timken cone),
and 25520 (Timken cup), (Chrysler numbers 1790523 and 696403). The
Dana Power-Lok can be recognized by its bolt-together assembly, bolts
around the side opposite the ring gear, and multiple openings exposing
the cross shafts.
1969-1974 used the Borg Warner Spin Resistant (# 2881343). This unit
utilized a spring-preloaded cone friction arrangement for the locking
action. Axle end thrust is taken by the cross shaft. This Sure Grip
appeared in '489' assemblies and 70 and later '741'/'742' assemblies.
The differential axle bearings are:
LM 104912 (Timken cone), and LM 104949 (Timken cup), (Chrysler numbers
2852729 and 2852728). The Borg Warner Spin Resistant unit can be
recognized by its lack of bolts on the side opposite the ring gear
(like the Dana), and two openings exposing the preload springs.
Borg Warner sold this design to Auburn Gear who currently offers the
replacement Sure Grip assemblies.
Non-Sure Grip differentials can be identified by the large openings in
the differential exposing the differential (a.k.a. spider) gears. There
are no springs or clutches.
Interchange Notes:
The two Sure Grip types can be interchanged between the carriers if the
matching differential axle bearings are retained. The outside diameter
of the cups are the same between the '741'/'742' and the '489'; the
inner cone differs.
The Sure Grip differential can be used as a direct replacement for the
non-Sure Grip within the carrier/bearing limits previously noted.
There is an interchange problem with differentials and axles manufactured
prior to 1964 (See Part II, Section 1: "Thrust Block Variations").
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Universal Joint Yokes
---------------------
The 8-3/4" axle was offered with two size cross & roller style universal
joint. These are referred to as the '7260' (2-1/8" yoke ID) and the '7290'
(2-5/8" yoke ID). Most Imperials and some C-bodies used a different univer-
sal joint. The '1330' type joint was used on Imperials and others with a
constant velocity joint. The '1330' uses outside snap rings instead of the
inside snap rings used by the '7269' and '7290'. The cap diameter for the
'7260' is 1.078". The cap diameter for the '7290' is 1.126". The '1330'
style joint cap diameter is 1.063".
There are four different yokes that have been used with the 8-3/4" axle
for the '7260' and '7290' style universal joints. The '741'/'742'
assemblies used a coarse spline (10 splines) drive pinion. Most of the
aftermarket gears also use this coarse spline yoke mount. There is a
small yoke for the '7260' and a larger one for the '7290'. The '489'
assembly used a fine spline (29 splines) yoke. Note: during the phase-in
period of 69-71 for the '489' unit, there were several permutations of pinion
size and yoke availability. 69-70 '489' units may be equipped with
a coarse (10) spline pinion, particularly for the '7290'. There are two yokes
for the '7260' and '7290' universal joints with fine (29) splines. Two
additional yokes were used for the '1330' style universal joint in
constant velocity applications, one for 10 splines and one for 29 splines.
Interchange Notes:
7260, 7290, 1330 yokes may be interchanged if the spline count is the same.
Note: the 9-1/4" axle (73-up) uses the same fine spline yokes as the
8-3/4" fine spline units (29 splines).
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Strength Considerations
-----------------------
Pinions...
The 1-3/8" '741' pinion is the weakest. It is still a capable unit in most
moderate power, moderate traction street applications. For high torque
applications with high traction tires, the 1-3/4" or 1-7/8" should be
considered.
The 1-7/8" '489' is supposedly the strongest. Although the stem tapers down
along it's length, it appears inherently stronger from a pinion stem
perspective and the inherent strength of the fine splines (OEM gears).
The 1-3/4" '742' has a larger rear pinion bearing yielding greater strength
in this area. The 1-3/4" shares yoke mount diameter and mounting nut
with the 1-3/8".
For perspective, the 7-1/4" has a 1-3/8" pinion, the 8-1/4 has a 1-5/8"
pinion, the 9-1/4" (70s) has a 1-7/8" pinion.
Sure Grips...
The Dana Power-Lok is inherently stronger and provides better, equal
torque transmission to both axles. It's locking capability is also
proportionate to the applied torque. The Borg Warner unit is weaker,
but is a more versatile unit for practical street applications in
inclement traction periods. The Dana unit is better for racing
applications and has clutch rebuild kits available.
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Axle and Housing Notes
----------------------
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. The 'Perches' dimension is the
distance center to center between the spring mount perches. Dimensions
are in inches.
Body line TrackPerches Notes
--------------------------------------------------------
A-body, 65-7255.643.04" lug bolt circle,
offered in heavy duty apps.
B-body, 62-7059.244.0
B-body, 71-7262.047.3
B-body, 71-7263.447.3 station wagon
C-body, 64-7263.447.3
D-body, 64-7263.447.3
E-body, 70-7460.746.0
The 8-3/4 was also available in the 58-74 D100/W100 trucks (and variants),
the 64-70 A-100 trucks and vans, the 67-70 A-108 trucks and vans, the
71-74 B100/B200 vans and non-listed 57-64 full and mid-size car models.
Note: the axle centerline to yoke/universal centerline is 12.35" for the
8-3/4" axle.
See Part II, Section 3: "Part Numbers and Dimensions of Axles and Housings"
for axle housing part numbers, sizes, and more detailed interchange
information of axles and housings.
Interchange Notes:
Any 8-3/4" center section may be interchanged for another as an entire
assembly except for a thrust block difference of non-Suregrip units
built before 1964 (See Part II, Section 1).
All 8-3/4" axle shafts, 65-74, are retained by a bolt-on flange. Axles can
be interchanged within housings of the same width. The passenger side
axle has a threaded adjuster to set axle shaft end play.
Note: there was a slight dimensional change in axle shaft length when
the Sure Grip design changed. If interchanging axles with the slight
difference, the threaded end play adjustment can be used to accommodate it.
Note: the 57-64 8-3/4 axle driveshafts were tapered and used a keyway and
locknut to retain the brake assemblies and end play was set with shims.
The 65 and later units use flanged axle shafts and a threaded adjuster to
set axle end play.
editor's note: AutoHobbyDigest has a tech article on working
with these tapered axles.
See Appendix A for information about the A-body 8-3/4" axle and bolt
circle changes.
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Service Parts Information
-------------------------
Most replacement parts for the 8-3/4" axle are still available. Some
items not available are new Dana Power-Lok assemblies, most OEM gears,
most carrier housings and complete differentials and housings. Sure
Grips are available from Auburn Gear. The Power-Lok clutch kits are
available from MP and other sources. Gear sets (typically performance
oriented ratios) are available from MP and the aftermarket for the
'489' and '742'. Bearings and seals are readily available.
Some sources...
Mopar Performance dealers, Chrysler dealers.
Moser Engineering, 1616 Franklin St, Portland IN, 47371 (219-726-6689).
Reider Racing, 12351 Universal Dr., Taylor MI, 48180 (313-946-8672).
Aftermarket for general replacements, i.e. seals, bearings, etc.
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Selected Parts Reference...
---------------------------
Numbers listed for reference, some may be superceded or discontinued,
some variances among models/years may occur. Reference factory or
replacement parts catalogs for exact replacement details.
Universal Joint Items...
ItemChryslerPrecisionDanaTRW
(Detroit ref.)(OEM or MP)(Moog)(Spicer) (FederalMogul)
------------------------------------------- --------------
7260 joint4364400315G5-1306X 20030, 20030P
7290 joint4057025316 5-1309X 20059, 20059P
Combination * --- 347 --- 20226
1330 joint25332023545-213X 20064, 20064P
7260 strap kitP4120468318-102-70-38X 20704
7290 strap kitP4120469492-102-70-28X 20705
* This is a combination of the 7260 and 7290 universal joints to allow
mating of the two styles.
Yokes...
Chrysler numbers:
3432485 -> 29 spline 7260 (2-1/8" ID), also P4529481
3432487 -> 29 spline 7290 (2-5/8" ID), also P4529483
3004872 -> 10 spline 7260 (2-1/8" ID), also P4529480
P4529482 -> 10 spline 7290 (2-5/8" ID), replaces 2808384, 3004873
2931813 -> 10 spline 1330, for constant velocity, ie. Imperial.
3432489 -> 29 spline 1330, for constant velocity, ie. Imperial.
1556556 -> pinion washer, concave, 3/16" thick, 13/16" hole diameter.
2070117 -> pinion washer, concave, 3/16" thick, 15/16" hole diameter.
1795175 -> pinion washer, flat, 3/32"thick, 13/16" hole diameter.
1795173 -> pinion nut, 3/4"-16 thread, 1-1/4" hex.
6027323 -> pinion nut, 3/4"-16 thread, 1-1/8" hex.
6028041 -> pinion nut, 7/8"-14 thread, 1-1/4" hex.
Sure Grip Items...
Chrysler numbers:
Mopar Sure Grip axle additive - 4318060
Dana Power-Lock thrust block set - 2881313
Repair Kit, Dana Power-Lok - P4529484 (replaces 2070845)
Note: there is no repair kit for the Borg Warner/Auburn unit, but
the internal cones have been remachined by others to successfully
restore performance.
Shim Package...
Chrysler numbers:
1-3/4" pinion -> P4452027
1-7/8" pinion -> P4452026
Ring Gear Bolts...
Chrysler numbers:
P4529486 -> 71 and later (also 4131255, pkg. of 10)
P5249163 -> 70 and earlier
Note: the 71 and later bolts may be installed in the earlier units by
drilling a shoulder relief in the attachment holes.
Gaskets, Seals...
Position ChryslerNationalC/RFel-Pro
--------------- --------------------------------
Axle inner seal 47966988695S15460 ---
Axle outer seal 2404216 8704S19000 ---
Axle flange, foam 2070933see flange kitsee flange kit 55032
Axle flange, shim 2881314see flange kitsee flange kit ---
Carrier gasket 1673367 --- --- RDS 65833
Pinion seal, 1-7/8 2931862512618708 ---
Pinion seal, 1-3/4 2931862721618912 ---
Pinion seal, 1-3/8 29318628515N18708 ---
Yoke repair sleeve --- 9918799187 ---
Bearings...
PositionCup/Cone, Timken, BCANotes:
----------------------------------------------------
Differential, side LM 104949/LM 10491270-74, Borg Warner
Differential, side 25590/2552057-69, Dana
Pinion, frontM88048/M880101-7/8"
Pinion, frontHM89443/HM894101-3/4"
Pinion, frontM88048/M880101-3/8"
Pinion, rearM804049/M8040101-7/8"
Pinion, rearM803149/M8031101-3/4"
Pinion, rearHM89446/HM894101-3/8"
Axle, outer BCA A-765-74
Axle, outer C/R BR765-74
Axle bearing service kit: Chrysler # 3683966, one axle.
BCA differential kit: 1-7/8", # RA-301, 1-3/4", # RA-300.
BCA axle mounting flange repair kit: Left # A-7-LK, Right # A-7-RK.
C/R axle mounting flange repair kit: Left # A7-LK, Right # A7-RK.
Note: the 8-3/4" axle shaft outer bearings require packing with grease
as they are not lubricated by the gear oil.
Miscellaneous...
Vent bolt - Chrysler # 4032798
Spring mounting pads (perches) - Chrysler # P4120074
'489' collapsible spacer (pinion bearing preload) - Chrysler # 2931687
Mopar gear lubricant - 4318058
Mopar Sure Grip axle additive - 4318060
Mopar wheel bearing lubricant - 4318064
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Appendix A: 8-3/4 A-body axle upgrade to 4.5" bolt circle
The 65-72 A-bodies were available with the 8-3/4" axle. This was standard
on all 340 equipped cars. It was also included in heavy duty packages
such as 318 with manual transmission and towing options. It was often
included in post 65 273 high performance manual applications.
The bolt circle (BC) on these vehicles was 4". All other Chrysler
vehicles (except some Imperials and trucks) of this era were equipped with
a 4.5" BC. It is commonly desired by A-body owners to change to the
4.5" BC when upgrading to later style disk brakes or to expand wheel
choice.
A-body 8-3/4" axle shaft swap:
There are several methods to accomplish this. Custom axles such as
Strange, Summers, Moser, etc. can be specified with the larger lug
pattern for the A-body housing. Longer axles from a larger vehicle
may be cut and resplined to fit the shorter A-body axle. Donors for
this operation are C-bodies, D-bodies, trucks and vans with the 8-3/4"
axle and 4.5" BC. Moser Engineering can perform the cut and respline
operation. When selecting a donor axle shaft, look for one that does
not taper along its length. Note: A-body 8-3/4" axles were equipped
with 10x1-3/4" drum brakes. Replace these with 10x2-1/2" or 11-2-1/2"
brakes and associated hardware from the donor vehicle or similar.
B-body axle in the A-body:
Another alternative can be used to replace an existing 8-3/4" or the
smaller 7-1/4" or 8-1/4" axles. An axle from a 66-70 B-body can be installed
in the A-body (note: a 62-64 axle can be used, but it does not
contain the flanged axles of the later units). The later sport coupe style
cars, Duster, Demon, Dart Sport, have the roomiest fenderwells. The 67-76
sedan and hardtop models have less. The 60-66 appears to be the tightest
fit. The A-body has a spring perch spacing of 43.0", the 66-70 B-body
is 44.0". To mount the B-body axle on the A-body springs, the perches
need to be removed and new ones welded in place 1/2" inward from the
original location on each side. The B-body track width is greater than
the A-body. This may be a concern depending on the wheel/tire combination.
The wider track enhances handling and aesthetics to some degree. This
has been performed on the author's 73 Duster, now equipped with 15x6.5"
rallye wheels and P255/60R-15 tires with 11x2.5" brakes. Originally
setup with 15x7" rallye wheels and P275/60R-15 tires will rolled fender
lips. The larger tires exhibited scrubbing when loaded on dips/bumps.
If replacing a 7-1/4" or 8-1/4" axle, the driveshaft must be changed as
the axle centerline to yoke centerline is greater for the 8-3/4" (12.35"
vs. 10.09" for 7-1/4" and 11.69" for 8-1/4"). If changing a 7-1/4" axle
the shock plates and u-bolts/nuts must be changed to the larger units
from an 8-3/4" car.
===========================================================================
A Chrysler 8-3/4" Rear Axle Guide, Part II
------------------------------------------
Section 1: Thrust Block Variations
There was a difference in thrust blocks prior to 1964 that make
center section interchange, as well as axle interchange problematic.
The thrust block, or "axle shaft thrust spacer", is the block that
both left and right axles butt up against inside the center of the
differential. Prior to 1964, all open differentials used a thrust
block was approximately 1/8" to 1/4" thicker than units made after
1964. The Sure Grip thrust block prior to 1964, however, was
identical to all 1964 and later Sure Grips and open differentials.
In 1964, the thrust block width was changed to match the Sure Grip
thrust block width.
This difference in thrust blocks between Sure Grip differentials
and open differentials required that two different axles be
produced for each 8-3/4" housing manufactured. This is true
of all 1959-1963 cars with 8-3/4"s.
A 1964 and later differential, or any Sure Grip differential, cannot
be used with 1959-1963 rearends and axles originally equipped
with an open differential. The original axles must be machined
or original Sure Grip length axles must be used.
Part II, Section 3 contains housing and axle sizes and part numbers for these
early 8-3/4" rearends.
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Section 2: Flange Axle Taper and Flange Differences
Besides the obvious bolt circle lug pattern difference
between the A-body 4" BC axle and all other passenger
car 4.5" BC axles, there is a sometimes unexpected
difference in the flange that tends to cause confusion.
The distance from the axle housing flange to the wheel
flange of the axle is 1/4" smaller on A-body axles than
on the standard 4.5" passenger car axle. On an A-body
axle this measures 2", on 4.5" BC axles its 2.25".
This slight difference will cause problems when one
attempts to adapt brake systems (drum and backing
plate together), or a brake drum from a 4.5" BC axle to
a 4" BC axle. If you are using original A-body axles,
regardless of what BC is may have been redrilled for,
you can only use the original 10x1.75" drums (redrill
the drums as well).
The diagram above illustrates 8-3/4" axles. The top is
a 66-72 A-body axle, and the other two are longer axles
that generally resemble the B and C body and truck axles.
As Gary wrote earlier, C body and truck axles can be
shortened and resplined by a quality machine shop, however
it is important to note that not all C-body/Truck axles
are created equally. The bottom axle illustrates how
many mid-60's axles taper as they near the splines, these
can not be used as A-body short axle donors! The middle
axle shows that at the location of where the new splines
will be (26" from bearing retaining plate to the end of
the axle, see measurement #2 in the diagram) the
outside diameter (OD) must be larger than what the OD of
the spline needs to be.
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Section 3: Part Numbers and Dimensions of Axles and Housings.
Body line Track Perches Notes
------------ ---------- ----------- -----------------------
A-body, 65-72 55.6 43.0 4" lug bolt circle,
Offered in heavy-duty apps.
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
Axle
Housing
PNApplicationHousing Width/Axle Information
------------------------------------------------
104574457-61 8-1/4"same width as 57-62 full size V8
2070269and 63-64 Chrysler/880
flange to flange: 55-5/8" (est.)
Note 8-1/4" axles 57-61 have different
housing part numbers.
194574557-62 fullsizeV8 same width as 63-64 Chrysler and 880
2070270SG axle shorter than open rear axle
flange to flange: 55-5/8" (est.)
207096063-64 Chrysler same width as all 61-62 rearends listed
63-64 880above ( 2070259 / 2070270 )
SG axle shorter than open rear axle (63)
SG axle and open axle same length (64)
flange to flange: 55-5/8" (est.)
NA65 C-body axle 2404228, same housing and axles as
A-100 vans and trucks.
280017566 C-body unknown
288100369 C-body flange to flange: 56-7/16"
288131069 C-body wagon flange to flange: 59-7/64"
NA70 C-body flange to flange: 57-3/4"
207023160-62 Imperial Imperials: 57-63 SG, all 64 axle 1829267
207096163-64 Imperial Imperials: 57-63 open axle 1675449
240420865-66 Imperial different from above axles, 2404139
280022469 Imperial
207053962-63 B-body, flange to flange: 53-1/4"
64 Max Wedge Parts Manuals list four different axles
for this housing:
2070573 741 case w/o SG 30-1/2" overall
2404003 742 case w/o SG 30-1/2" overall
2070695 741 case SG 30-7/16" overall
2404050 742 case SG 30-7/16" overall
240427164 B-body flange to flange: 55-5/8" (Hollander est)
except 1/8" - 1/4" narrower than 2070270 housing
Max Wedge axle 31-1/2" overall
240414365 B-body flange to flange: 54-1/2"
uses axle 2404223
264340966 B-body flange to flange: unknown, thought
to be narrower than 68-70 B-body
285283868-69 B-body flange to flange: 54-15/16"
343229570 B-body flange to flange: 54-29/32"
350750271-73 B-body flange to flange: 57-47/64"
350750171-73 C-body flange to flange: 59-1/8"
71-73 B-body SW
280022766-72 A-body flange to flange: 52-13/64" (70-71)
343264752-37/64" (72)
3432295
285288270-74 E-body flange to flange: 56-7/16"
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Section 4: 8-1/4" Carrier Housing
From 1957 to 1964 Chrysler manufactured a front loading center section
similar to an 8-3/4". Its ring gear diameter was 8-1/4". This is not
related to the Spicer built 8-1/4" rearend used in Chrysler products in
the Seventies.
From 1957 until 1961 or 1962, it used a case with a casting number
1828448. It appears that in 1963 and 1964 this gearset was installed
in a 741 case. The 1828448 may have used a different housing flange pattern
as it calls for a different housing (1045744,2070269). These rearends
were for extreme light duty and were only used in six cylinder
applications. Six cylinder station wagons used 8-3/4"s. Along with other
available gear ratios, there was a 3.31:1 for manual transmissions and
a 2.93:1 for automatic transmissions.
===========================================================================
References...
-------------
- Chrysler factory service manuals, various, 1964-1974
- Chrysler parts catalogs, various, 1957-1974
- Hollander Interchange Manuals, 40th edition
- Mopar Performance catalogs
- Mopar Performance Chassis Manual
- Mopar Performance Oval Track Manual
- Mopar Action magazine, selected articles
- High Performance Mopar magazine, selected articles
- Chrysler Car Enthusiast, Engines, Etc magazine, selected articles
- BCA/National catalog # 510-1, 1995
- CR Seals & Bearings catalog # 457205, 1991
- American Bearing catalog # 710, 1980
- Fel-Pro Master Gasket Catalog, # 900-96, 1/1996
- Precision Universal Joint catalog # MC-86, 1/1986
- TRW Universal Joints catalog # X-4003, 1995
- Mopar Mailing List (MML) postings
- My memory.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Acknowledgements...
------------------
- Thanks to Jeff Brown with his help on the yokes information.
- Thanks to the MML in general.
Tech Index