Rear Axle 8.75"

From MoparWiki
Jump to: navigation, search



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.


This Wiki is Under Construction, and can use your help!


Please take a moment to add any information you might have on this topic. It is through this type of Member collaboration that the MoparWiki will grow into being the Ultimate Mopar Infobase. The links contained in the Understanding Wikis box in the sidebar can help you get started.


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:


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, 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, 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 (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"

Carrier Types and Specifications

741

742

489

Year by Year Changes

Wiki Topic References:

Magazine References:

External Links