Search



Go Back   MustangForums.com > Ford Mustang Tech > Classic Mustangs (Tech) > Classic Mustang General Discussion
Sign in using an external account
Register Forgot Password?
Search

Classic Mustang General Discussion Make your non-Technical threads/posts in here.

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 12-13-2011, 08:52 AM   #1
ezstang
1st Gear Member

 
Join Date: Dec 2011
Vehicle: 1966 Mustang Coupe
Location: Michigan
Posts: 85
Default 1968 8" Rear End in 1966 Mustang

Hello All-

Ok this is my first post! I have a 1966 Mustang Coupe that I'm putting a 89 5.0 HO motor in (Carburated) and 85 Police AOD Transmission. I have did the 5 lug conversion with 1968 Spindles and a 68 Rear end. At the time I redid the rear end I did not realize it was 2" longer. It is already in the car with 4.5" backspacing tires. As you can imagine the tires stick out about an inch on each side. With that being said I also have the rear end lifted 3/8inch with different leaf spring shackles. This is a rolling chassis still so my questions are:

1. Will I be able to run the set up the way it is? If so anything to look for?

2. If I decide I don't like the inch tires sticking out can I just change rear rims to 5.5" backspacing with 4.5" in the front?

3. If this rear end is going to cost me nothing but problems what is the best rear end to run with under 300Hp?

Thanks for all in advance who respond. I am doing a V-8 restoration for first time but have been around the block with Inline 6 before
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
ezstang is offline   Reply With Quote
Old 12-13-2011, 10:20 AM   #2
dodgestang
5th Gear Member

 
Join Date: Nov 2004
Vehicle: 1965, Mustang, Fastback
Location: Insanity
Posts: 2,125
Default

Quote:
Originally Posted by ezstang View Post
Hello All-

Ok this is my first post! I have a 1966 Mustang Coupe that I'm putting a 89 5.0 HO motor in (Carburated) and 85 Police AOD Transmission. I have did the 5 lug conversion with 1968 Spindles and a 68 Rear end. At the time I redid the rear end I did not realize it was 2" longer. It is already in the car with 4.5" backspacing tires. As you can imagine the tires stick out about an inch on each side. With that being said I also have the rear end lifted 3/8inch with different leaf spring shackles. This is a rolling chassis still so my questions are:

1. Will I be able to run the set up the way it is? If so anything to look for?

2. If I decide I don't like the inch tires sticking out can I just change rear rims to 5.5" backspacing with 4.5" in the front?

3. If this rear end is going to cost me nothing but problems what is the best rear end to run with under 300Hp?

Thanks for all in advance who respond. I am doing a V-8 restoration for first time but have been around the block with Inline 6 before
You can change the backspacing on the wheels to 5.5 and they will fit. This will result in a dish in the front and not in the back however which would look silly (IMO). There is a number of way you can fix this.

1. Run 5.5 wheels front and back by using a wheel adapter in the front
2. Run 5.5 wheels front and back by upgrading the front brakes to late model discs using a kit from street or track which will change your backspacing requirements for the front
3. Shorten the rear you have now
4. Obtain a different width rear
__________________
Nick
65FB 408c AOD-68FB 351w T5-67FB 302 FMX


11.521 at 118.85 (Best ET to date 11.26 at 121.06)
http://www.youtube.com/watch?v=c60rI5RWnJw
dodgestang is offline   Reply With Quote
Old 12-13-2011, 11:58 AM   #3
ezstang
1st Gear Member

 
Join Date: Dec 2011
Vehicle: 1966 Mustang Coupe
Location: Michigan
Posts: 85
Default

What if I leave it like it is? Do you see any problems with it?
ezstang is offline   Reply With Quote
Old 12-13-2011, 01:09 PM   #4
dodgestang
5th Gear Member

 
Join Date: Nov 2004
Vehicle: 1965, Mustang, Fastback
Location: Insanity
Posts: 2,125
Default

Quote:
Originally Posted by ezstang View Post
What if I leave it like it is? Do you see any problems with it?
You mean aside from the visual fopa of mis-matched wheels? I suppose not.
__________________
Nick
65FB 408c AOD-68FB 351w T5-67FB 302 FMX


11.521 at 118.85 (Best ET to date 11.26 at 121.06)
http://www.youtube.com/watch?v=c60rI5RWnJw
dodgestang is offline   Reply With Quote
Old 12-13-2011, 01:18 PM   #5
ezstang
1st Gear Member

 
Join Date: Dec 2011
Vehicle: 1966 Mustang Coupe
Location: Michigan
Posts: 85
Default

dodgestang-

I don't have mismatched wheels I currently have a 68 8" rear in in the 66 (2 inches wider). I have aluminum centerlines all with 4.5" spacing 15x8 in rear 15x7 in front. I kinda like the look of the back tires sticking out looks tough but one I get this beast on the road am I gonna have any issues with that set up?
ezstang is offline   Reply With Quote
Old 12-13-2011, 02:19 PM   #6
LynnBob Mustang
5th Gear Member
 
LynnBob Mustang's Avatar
 
Join Date: Aug 2007
Vehicle: 1999 GT, 1965 coupe
Location: PA
Posts: 2,148
Default

Let's see pics.
Lynn
__________________

'99 GT automatic
CDC Shaker scoop, K&N Filter
MAC cat back
Max Speed 1 ˝” Lowering springs
KYB GR2 shocks and struts
Cobra front brakes

'65 Mustang coupe in progress
http://mustangforums.com/forum/class...s-of-pics.html
LynnBob Mustang is offline   Reply With Quote
Old 12-13-2011, 02:20 PM   #7
dodgestang
5th Gear Member

 
Join Date: Nov 2004
Vehicle: 1965, Mustang, Fastback
Location: Insanity
Posts: 2,125
Default

Quote:
Originally Posted by ezstang View Post
dodgestang-

I don't have mismatched wheels I currently have a 68 8" rear in in the 66 (2 inches wider). I have aluminum centerlines all with 4.5" spacing 15x8 in rear 15x7 in front. I kinda like the look of the back tires sticking out looks tough but one I get this beast on the road am I gonna have any issues with that set up?
Yes, but they don't fit. You can't drive the car with the wheels sticking out past the fender like that. one good bump that bottoms out the supsension and you will slam your fender into the tire and either wrinkle for the fender or blow the tire and have an accident. So you need to get wheels in the back with the correct back spacing
__________________
Nick
65FB 408c AOD-68FB 351w T5-67FB 302 FMX


11.521 at 118.85 (Best ET to date 11.26 at 121.06)
http://www.youtube.com/watch?v=c60rI5RWnJw
dodgestang is offline   Reply With Quote
Old 12-13-2011, 02:25 PM   #8
LynnBob Mustang
5th Gear Member
 
LynnBob Mustang's Avatar
 
Join Date: Aug 2007
Vehicle: 1999 GT, 1965 coupe
Location: PA
Posts: 2,148
Default

The only hing to watch out for with the rear wheels sticking out an 1" or more past the wheels wells is going over bumps and hitting holes, etc. You'll crunch your quarter panels if your shocks aren't stiff enough and the ride height isn't high enough to keep from doing so.

I like the look myself, but it can be a pain in the butt.
Lynn
__________________

'99 GT automatic
CDC Shaker scoop, K&N Filter
MAC cat back
Max Speed 1 ˝” Lowering springs
KYB GR2 shocks and struts
Cobra front brakes

'65 Mustang coupe in progress
http://mustangforums.com/forum/class...s-of-pics.html
LynnBob Mustang is offline   Reply With Quote
Old 12-13-2011, 02:28 PM   #9
LynnBob Mustang
5th Gear Member
 
LynnBob Mustang's Avatar
 
Join Date: Aug 2007
Vehicle: 1999 GT, 1965 coupe
Location: PA
Posts: 2,148
Default

Quote:
Originally Posted by dodgestang View Post
Yes, but they don't fit. You can't drive the car with the wheels sticking out past the fender like that. one good bump that bottoms out the supsension and you will slam your fender into the tire and either wrinkle for the fender or blow the tire and have an accident. So you need to get wheels in the back with the correct back spacing
Yes, you can drive it like that.
Just don't have anyone sit in the back seat either, been there before.

Many cars back in my day in the 80's had wheels and tires sticking out past the wells.

I have done it for years in my teen years and I would do it again in a heart beat.
Click the image to open in full size.
Click the image to open in full size.
People forget why they used to make air shocks for.

We used to call them quarter crunchers back in the day, You just got be careful.
Lynn
__________________

'99 GT automatic
CDC Shaker scoop, K&N Filter
MAC cat back
Max Speed 1 ˝” Lowering springs
KYB GR2 shocks and struts
Cobra front brakes

'65 Mustang coupe in progress
http://mustangforums.com/forum/class...s-of-pics.html

Last edited by LynnBob Mustang; 12-13-2011 at 02:32 PM.
LynnBob Mustang is offline   Reply With Quote
Old 12-13-2011, 02:31 PM   #10
ezstang
1st Gear Member

 
Join Date: Dec 2011
Vehicle: 1966 Mustang Coupe
Location: Michigan
Posts: 85
Default

Well I have the leaf spring shackles that lift rear up 3/8" and also have 5 leaf hd springs vs standard leaf springs and new shocks. When it is sitting it looks like it has the clearance. I wont have the motor or tran. in it till spring. Dodgestang I know you probably have way more experience in this then me but my neighbor has a 1977 Cougar with wide tires that stick out like that and has never been a problem.
ezstang is offline   Reply With Quote
Old 12-13-2011, 02:31 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
1966, 1966 mustang, 1968 mustang, 68, 8, 8" rear end, biggest, differential, fender, mustang, ohio, past, rear, stick, tire, tires

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 07:43 PM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.5.2

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup