Moving rear axle back - Ford Bronco Forum
  • 1 Post By Hagan
  • 1 Post By trustyrusty
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 03-11-2017, 04:19 PM Thread Starter
Registered User
Join Date: Oct 2003
Location: Victoria, BC
Posts: 328
Bronco Info: 78 Bronco
iTrader: (0)
Moving rear axle back

When I put the Dana 60's in my 78 I had to shorten the driveshafts a little bit. Maybe an inch or so, I can't remember.

When I built my 203/205 case the output of the 205 moved back about 7-1/4" if I remember correctly. I checked the two shafts and it turns out they were 7-1/2" different in length. Amazing, as if I had planned it that way. Anyways, I was able to take the front and put it in the back, and take the back shaft and put it in the front. I have been driving this way for a few years now with the small diameter front shaft powering the rear diff. Haven't had a problem at all, although I did make a little more clearance in the trans mount cross-member for the larger rear driveshaft.

Anyways I am now thinking about linking the rear (can't stand leaf-springs anymore) and while I'm at it moving the axle back so that my driveshafts would be the same length, so somewhere around 7". I have to replace my quarters anyways so I thought I could do the bodywork at the same time.

Any thoughts? Any pics of lengthened Broncos out there?


Steve Johansen
seve is offline  
Sponsored Links
post #2 of 5 (permalink) Old 03-11-2017, 09:51 PM
press ALT+F4
78bronco460's Avatar
Join Date: Mar 2003
Location: PDX vicinity
Posts: 4,422
Bronco Info: '78 Bronco with motor, axles and stuff
iTrader: (2)
One thought: Lengthening the wheelbase will give up clearance on breakover.

Tradeoffs everywhere.

78bronco460 is offline  
post #3 of 5 (permalink) Old 03-13-2017, 02:47 PM
Registered User
Hagan's Avatar
Join Date: Jan 2012
Location: Salem, OR
Posts: 622
iTrader: (0)
What about the gas tank?
445 FE Bronco likes this.

1989 Bronco 6bt Cummins Zf5 Super Duty axles
1989 F350 6bt Cummins ZF5 4wd 19.5's
Hagan is offline  
post #4 of 5 (permalink) Old 03-14-2017, 07:40 PM Thread Starter
Registered User
Join Date: Oct 2003
Location: Victoria, BC
Posts: 328
Bronco Info: 78 Bronco
iTrader: (0)
Not concerned about loss of breakover clearance. Departure angle will be greatly increased so one loss is another gain.

Gas tank can/will be relocated above the axle, through the floor. Prob going propane so mods have to be done anyways...

Steve Johansen
seve is offline  
post #5 of 5 (permalink) Old 03-15-2017, 10:39 PM
Registered User
trustyrusty's Avatar
Join Date: May 2013
Location: southwest ontario canada
Posts: 2,975
Bronco Info: driving a 78 rusty piece o crap owned 23 yrs, and working on another 78 bronco,mint,460
iTrader: (0)
depending on how much stretch you want, swapping the frame for a f150 shortbox frame may be easier than hacking up the bronco frame
beernut likes this.
trustyrusty is offline  

  Ford Bronco Forum > Bronco Discussions > 1978-'79 Bronco Tech

Quick Reply

Register Now

In order to be able to post messages on the Ford Bronco Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself. DO NOT USE accounts. If you only have a email please contact the administrator here

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome