FYI FORD - MustangSteve's Ford Mustang Forum
The Internet's Most Knowledgeable Classic Mustang Information
IF YOU HAVE A QUESTION ABOUT CLASSIC FORD MUSTANGS, YOU HAVE COME TO THE RIGHT PLACE!
MustangSteve has over 30 years of Mustang experience, having owned 30 of them and restored several others. With the help of other Mustangers, this site is dedicated to helping anyone wanting to restore or modify their Mustang.... THERE ARE NO DUMB QUESTIONS!!!!!
Visit MustangSteve's web site to view some of my work and find details for:
FYIFORD Contributors' PICTURES - Power Brake Retrofit Kits for 65-66 Stangs - Classic Mustang FAQ's by MustangSteve - How to wire in a Duraspark Ignition - Mustang Ride Height Pictures and Descriptions - Steel Bushings to fit Granada Spindles to Mustang Tie Rods - Visit my EBAY store MustangSteve Performance - How to Install Granada Disc Brakes MustangSteve's Disc Brake Swap Page - FYIFORD Acronyms for guide to all the acronyms used on this page - FYIFORD Important information and upcoming events

You are not logged in. Would you like to login or register?

  • Index
  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » 1975 Mustang II rear end question

    • 1 of 1

       

    5/26/2022 8:02 PM  #1

    BILLY WALTON from GEORGIA
    Carrollton, GA Bash Host

    Offline

    From: CARROLLTON GEORGIA
    Registered: 4/14/2013
    Posts: 2,431

    1975 Mustang II rear end question

    Anybody used one in a 65-66? they are .25 narrower
    I know they are 8 inch but not sure what gearing they came with.

    Its really me....I fixed my caps lock .
     

    5/27/2022 6:46 AM  #2

    TKOPerformance
    Hyper FYIFORD ADDICT

    Offline

    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,417

    Re: 1975 Mustang II rear end question

    There were a bunch of different gear ratios available, the best of which was a 3.55:1.  On the low end they went all the way down to 2.40:1.  Best bet is to just check the tag.  It will have the ratio on it.  '75-'76 is your best bet for a decent performance ratio with a Traction Lok (these are 2 pinion carriers though). 

     

    5/30/2022 8:51 PM  #3

    MS
    Forum Originator

    Offline

    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,156

    Re: 1975 Mustang II rear end question

    Downside is 4 lug axles and smaller brakes.  Attaching flanges for backing plates even have smaller bolt pattern.
    I used to offer disc brackets with the bolt pattern for MII rear bolt pattern, but demand was nonexistent.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    6/02/2022 5:53 PM  #4

    retired65
    FYI FORD Member

    Offline

    Registered: 6/18/2020
    Posts: 37

    Re: 1975 Mustang II rear end question

    I have the original rear axle assy. out of my '65 Fastback I am going to sell.  I used a 9 inch from a Lincoln  Versailles.  This is complete with emer. brake cables and diff. assy. with drum brakes and has 5 bolt pattern for axles . According to the tag on the door, F, it is 2.80: 1    I don't know if it was ever changed.   Asking $500 plus shipping.

     

     

    1 of 1

  • Index
  •  » FYI Ford, Classic Mustang Tech Discussion
  •  »  1975 Mustang II rear end question

    • Board footera


    REMEMBER!!! When posting a question about your Mustang or other Ford on this forum, BE SURE to tell us what it is, what year, engine, etc so we have enough information to go on.