• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Shelby A-arm Relocation and Lowering Questions

  • Thread starter Thread starter bad68coupe
  • Start date Start date Jul 28, 2006
Prev
  • 1
  • 2
  • 3
Next
First Prev 2 of 3 Next Last
8

85 Turbo Bird

Founding Member
Aug 30, 2002
77
0
0
Sacramento, CA
Aug 1, 2006
#21
  • Aug 1, 2006
  • #21
Sicarius428 said:
My 70 with the shelby drop and eibach big block 1 inch springs lowered my car 3 inches... Granted its supporting a 428 but thats what mine ended up being.
Kevin
Click to expand...

Was that with new springs? If they were older springs than that's why it dropped so much...
 

67FBack

New Member
Feb 27, 2006
316
0
0
New Braunfels, TX
Aug 2, 2006
#22
  • Aug 2, 2006
  • #22
Dagz said:
hey boys not here to steal the thread, but what are you running for ride height with that stang and the 20's MDJAY

Dagz
Click to expand...

20's on a stang remind me of this:



Just MHO.
 

Attachments

  • 1967_22copy.webp
    6.3 KB · Views: 326
J

jmenke

Founding Member
Nov 8, 1999
211
0
16
Melbourne, FL
Aug 2, 2006
#23
  • Aug 2, 2006
  • #23
I know this isn't the classifieds, but in tune with the discussion,
I have a set of promotorsports neg wedges that I am no longer using if anyone is interested in them.

I still have the steel plate that relocates the upper A-arm and ball joints on my car. Only thing I can sell are the wedges and the bolts with the modified nut/washers. I also have a set of 1" thick poly spring bushings that I don't need.

The drop was too much on my car with the Promotorsports drop and 1" Eibach progressive rate springs. Looked and handled good, but 17" 235 45s on a '66 rubbed and drug my headers.
 
O

Opentracker

20+ Year Stangneter
Feb 4, 2004
516
0
16
Aug 2, 2006
#24
  • Aug 2, 2006
  • #24
You can run a 15" wheel with 4.5 backspacing if you trim/grind some off of the upper arm. The wheels hit the arm, not the ball joint. I ran 15X7 wheels on my car for a while that had 4.5" of backspacing. All I did was grind a bit off the nose of the upper arm. The original Ford upper arms gave more room than the aftermarket arms do. They have less of a lip on the front of the upper arm.

UPPER ARM PHOTO 1
This arm has had the nose cut off the ball joint dome and a brace added. You don't need to cut this much off to fit a 15" wheel with 4.5 backspacing. I'm using these arms for my next project that will run 15x8" wheel with 4.75" of backspacing.

UPPER ARM PHOTO 2
This photo showes that arm next to a regular arm without any mods to the ball joint dome.

The 16" - 17" and up wheels get very heavy, over 25lbs each, some are over 30lbs each for the big ones. The more rolling mass you have, the more brakes you need to stop it. I agree that they start to look like wagon wheels after you get past the 16" wheels.

John
 

mdjay

Premium Sponsor
Dec 9, 2003
896
0
16
Las Vegas, NV
Aug 2, 2006
#25
  • Aug 2, 2006
  • #25
jmenke said:
The drop was too much on my car with the Promotorsports drop and 1" Eibach progressive rate springs. Looked and handled good, but 17" 235 45s on a '66 rubbed and drug my headers.
Click to expand...

I would use the neg wedge for the geometry improvements and ditch the prog rate springs. The neg wedge only drops it about 1/4-1/2"...
 

mdjay

Premium Sponsor
Dec 9, 2003
896
0
16
Las Vegas, NV
Aug 2, 2006
#26
  • Aug 2, 2006
  • #26
Opentracker said:
I agree that they start to look like wagon wheels after you get past the 16" wheels.
John
Click to expand...

Come on now John! Let's not get into this debate~

This is a matter of preference!

I'm all for the 17" look

 

Attachments

  • E2atSunset_11-20-03_020e.webp
    44.9 KB · Views: 165

zookeeper

Founding Member
Aug 25, 2001
3,415
63
109
Rogue River, Oregon
Aug 2, 2006
#27
  • Aug 2, 2006
  • #27
Opentracker, nice pics. I see it really isn't too much trouble to clearance the A-arm. But most 16x8's built for older Mustangs use a 4 1/2 backspace, which is only 1/8" more than my 15x7 shelby wheels. That means that there will be 7/8" more wheel to the outside than mine and I don't have that much room, so how does everyone claim to run 8's on the front that don't rub with no modifications?
 
O

Opentracker

20+ Year Stangneter
Feb 4, 2004
516
0
16
Aug 2, 2006
#28
  • Aug 2, 2006
  • #28
mdjay said:
Come on now John! Let's not get into this debate~

This is a matter of preference!

I'm all for the 17" look

Click to expand...


That is a bad-ass looking car. I GIVE! - - Those wheels look killer!

Some of the SUV's with 24's do look a little funny to me. Just my opinion.

John
 

Attachments

  • E2atSunset_11-20-03_020e.webp
    44.9 KB · Views: 154

mdjay

Premium Sponsor
Dec 9, 2003
896
0
16
Las Vegas, NV
Aug 2, 2006
#29
  • Aug 2, 2006
  • #29
zookeeper said:
Opentracker, nice pics. I see it really isn't too much trouble to clearance the A-arm. But most 16x8's built for older Mustangs use a 4 1/2 backspace, which is only 1/8" more than my 15x7 shelby wheels. That means that there will be 7/8" more wheel to the outside than mine and I don't have that much room, so how does everyone claim to run 8's on the front that don't rub with no modifications?
Click to expand...

Most are runnin 4.75" with TTII 17x8" and about 1 deg neg camber! Most are also rollin the fender lips...
 
O

Opentracker

20+ Year Stangneter
Feb 4, 2004
516
0
16
Aug 2, 2006
#30
  • Aug 2, 2006
  • #30
zookeeper said:
Opentracker, nice pics. I see it really isn't too much trouble to clearance the A-arm. But most 16x8's built for older Mustangs use a 4 1/2 backspace, which is only 1/8" more than my 15x7 shelby wheels. That means that there will be 7/8" more wheel to the outside than mine and I don't have that much room, so how does everyone claim to run 8's on the front that don't rub with no modifications?
Click to expand...






Our '65 coup runs the 16X8 wheels with 4.5 backspacing on the track with a 225/50/16 tire. It has glass fenders and there is no lip at all. They do rub a little but not much. The cars I have seen with the 8" wheels do have some mods or they sit way high with a small tire and stiff springs.
 
S

Sicarius428

Active Member
Jan 6, 2004
2,085
5
49
Aug 2, 2006
#31
  • Aug 2, 2006
  • #31
Yeah that was with new springs. I After I change the heads to some Edelbrocks it should come up a bit more. I like the way it corners and looks but my headers drag on most speedbumps. I drove my friend's 70 with some 620s and it was a bit skittish on some of the bumps is why I went with the progressive springs. Not that I drive the car much but thus far I am really pleased.
Kevin
 

mdjay

Premium Sponsor
Dec 9, 2003
896
0
16
Las Vegas, NV
Aug 2, 2006
#32
  • Aug 2, 2006
  • #32
Opentracker said:
That is a bad-ass looking car. I GIVE! - - Those wheels look killer!

Some of the SUV's with 24's do look a little funny to me. Just my opinion.

John
Click to expand...

IMO It's the bling factor that can kill the look on an early model.

Ex Big-Mac did a nice job with 18's

 

Attachments

  • IMG_4170.webp
    69.2 KB · Views: 140

mdjay

Premium Sponsor
Dec 9, 2003
896
0
16
Las Vegas, NV
Aug 2, 2006
#33
  • Aug 2, 2006
  • #33
Sicarius428 said:
Yeah that was with new springs. I After I change the heads to some Edelbrocks it should come up a bit more. I like the way it corners or looks but my headers drag on most speedbumps. I drove my friend's 70 with some 620s and it was a bit skittish on some of the bumps is why I went with the progressive springs. Not that I drive the car much but thus far I am really pleased.
Kevin
Click to expand...

Prog rate springs allow the car to roll and you'll push. A 600 rate spring on a big block made for your car would be a pretty good ride and you don't give up body roll.

PS I always recommend shory headers for a street driven car!
 

2bav8

Founding Member
Nov 30, 1998
2,511
1
47
Mesa, AZ
Aug 2, 2006
#34
  • Aug 2, 2006
  • #34
Opentracker,

Do you have the vario-camber kit on the front of the '65?
Doesn't that also provide a little extra wheel clearance as shims are no longer needed?
 

zookeeper

Founding Member
Aug 25, 2001
3,415
63
109
Rogue River, Oregon
Aug 2, 2006
#35
  • Aug 2, 2006
  • #35
Opentracker said:
Our '65 coup runs the 16X8 wheels with 4.5 backspacing on the track with a 225/50/16 tire. It has glass fenders and there is no lip at all. They do rub a little but not much. The cars I have seen with the 8" wheels do have some mods or they sit way high with a small tire and stiff springs.
Click to expand...
Ok, that's what I thought. Thanks for answering honestly, I really don't want the tires to rub at all, nor do I want to raise the car. I know some companies make 16x7's and I'll probably go with those when the time comes rather than hope rolling the lips is enough.
 

Jester67

Member
Sep 21, 2004
908
1
18
TN
Aug 2, 2006
#36
  • Aug 2, 2006
  • #36
mdjay said:
IMO It's the bling factor that can kill the look on an early model.

Ex Big-Mac did a nice job with 18's

Click to expand...
OH, you had to go and role out Big-Mac didn’t yah. That is the one and only classic mustang that I thought looked good with 18”. However, my personal limit is 17 and I really want to go 16 because I like to see some tire on the rims.
 

Attachments

  • IMG_4170.webp
    69.2 KB · Views: 156
S

Sicarius428

Active Member
Jan 6, 2004
2,085
5
49
Aug 2, 2006
#37
  • Aug 2, 2006
  • #37
Honestly the car doesn't roll or plow that I noticed. I've taken it on a few good turns but I also put the 1 1/8th front sway and 7/8ths sway bar in the rear. The front end is still by no means spongy. Shorty headers really aren't an option for the 428... I wouldn't want to sacrifice the power that the long tubes give me anyways. hehe... not that its hurting for any.
Kevin
 
N

nugget68

Member
Sep 26, 2005
362
3
19
Aug 2, 2006
#38
  • Aug 2, 2006
  • #38
mdjay said:
zoo - they have 17" 5 and 10 spokes with the correct backspacing.

It's been my experience that just the 1" s drop can cause a bind as well. So be careful with the process.

Dodge's wheel chart shows someone ran a 17x9 with a 5.5 bs in the front on a 67-68. That put's the offset in the same spot on as a 17x8 with a 4.5. Personally I would think you might run into problems with the UCA and/or the outer tie rod.
http://www.dodgestang.com/Tire Fitment Guide 67-8.pdf

Just found out 20's work...
Click to expand...
Looks better like this...
 

Attachments

  • PICT0235.webp
    74.6 KB · Views: 229

mdjay

Premium Sponsor
Dec 9, 2003
896
0
16
Las Vegas, NV
Aug 2, 2006
#39
  • Aug 2, 2006
  • #39
Sicarius428 said:
Honestly the car doesn't roll or plow that I noticed. I've taken it on a few good turns but I also put the 1 1/8th front sway and 7/8ths sway bar in the rear. The front end is still by no means spongy. Shorty headers really aren't an option for the 428... I wouldn't want to sacrifice the power that the long tubes give me anyways. hehe... not that its hurting for any.
Kevin
Click to expand...

Hey if it works for you, that's what counts. Those sway bars are helping you!

There's a long time debate between the shorties and long tube. The dyno numbers are virtually the same with slightly different curves. In other words, you may gain a little in the middle and loose a little on the top. Little meaning 2 or 3 hp! When you're talking about 500hp, you've got room to play. Someone out there has gotta make shorties for the fe motors...
 
S

Sicarius428

Active Member
Jan 6, 2004
2,085
5
49
Aug 2, 2006
#40
  • Aug 2, 2006
  • #40
The sway bars are definately a big help. The problem with my friend's car that it was to much spring which didn't allow the tire to plant either.
I know on the 5.0 the torque difference is suppose to be pretty significant down low between the shorties and LT.
Kevin
 
Prev
  • 1
  • 2
  • 3
Next
First Prev 2 of 3 Next Last
You must log in or register to reply here.

Similar threads

Drivetrain Rear end clunk
  • seanmahoney
  • Oct 13, 2025
  • SN95 4.6L Mustang Tech
Replies
3
Views
415
SN95 4.6L Mustang Tech Oct 13, 2025
nickyb
A definitive answer to the question of how much height Energy Suspension isolators add
  • 2000xp8
  • May 20, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
0
Views
273
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 20, 2025
2000xp8
C
1965 Mustang Lower Control Arm Question.
  • chopper1876
  • Nov 9, 2024
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
19
Views
897
1965 - 1973 Classic Mustangs -General/Talk- Dec 7, 2024
GOvert
G
R
1974 Datsun 620 pickup / 5.0L HO
  • RJH46
  • Aug 24, 2025
  • Other Auto Tech
Replies
1
Views
238
Other Auto Tech Aug 24, 2025
Noobz347
S
5.0 Rebuild
  • smittys7up
  • Nov 29, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
8
Views
562
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Dec 20, 2025
Noobz347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?