Rear Axle 8.75"

Background:

The 8.75" (AKA Eight and Three Quarter") axle was a very durable Rear Axle, mostly used in the full-size cars from the mid fifties until 1974. Unlike the other four Modern Day axles used by Mopar, the 8.75" had a 3rd Member (also referred to as a chunk, Carrier, or Pig) removable from the front of the axle housing -- much like the Ford 9". This 3rd Member grouped the ring gear, pinion gear, and the differential (or spool) as a unit.

8 3/4" Exploded View

History:

 Need some help with the history of this axle

Model Predecessor

 Need some help with the predecessor of the 8.75"

Model Successor

Rear Axle 9.25"

Related Models

Other Rear Axles used on Modern Mopars include:

• Rear Axle 7.25"
• Rear Axle 8.25"
• Rear Axle 9.25"
• Rear Axle Dana 60

Applications and Size

Shaft Length

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"

A-100

• '65-'70= 30"

D100

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

Housing widths

Measure flange to flange

A BODY

• '66-'72= 52 5/8"

B BODY

• '62-'63= 53 1/4" (And '64 Max Wedge)
• '64-'67= 54 1/4" (Exc. '64 Max Wedge)
• '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"

Rear end widths

Measure drum-to-drum

A BODY

• '66-'72= 57 1/8"

B BODY

• '62-'63= 58 1/2" (And '64 Max Wedge)
• '64-'67= 59 1/2" (Exc. '64 Max Wedge)
• '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"

Spring Perch Widths

Measure center-to-center of spring perch

A BODY

• '66-73= 43"

B BODY

• '62-'70= 44"
• '71-'74= 47.3"

C BODY

• '65-'73= 46"

E BODY

• '70-'74= 46"