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

Roll axle backwards 2in on leaf springs?

  • Thread starter Thread starter fawcett
  • Start date Start date Nov 27, 2008

fawcett

Member
Sep 10, 2003
380
0
16
Cohasset, Ma
Nov 27, 2008
#1
  • Nov 27, 2008
  • #1
My uncle wants to make extra space in his wheel wells for larger wheels in his 64 Falcon that he just V8ed. What is the best way to move the rear end assembly back 2 inches on his leaf springs? Can he just cut the pins off and move them back? He is using a 289 T10 custom d/s 8.5 rear from a 63 (2in shorter) on a cherry stock 64 Falcon which had a 97hp straight 6. This is the only thing that is holding him up from driving it. Please Help!
Thank You,
Fred Fawcett
 
1

10secgoal

Active Member
Dec 1, 2003
2,801
3
49
San Diego
Nov 27, 2008
#2
  • Nov 27, 2008
  • #2
It's not quite that easy. You'll have to him the rear once it's back to get the pinion angle back to the correct angle, and make a longer driveshaft. But possible. Maybe a different body to rear brake line as well, that's longer.
 
F

ForceFed70

That's why they call it "dope"
Founding Member
Dec 6, 1999
4,818
1
69
BC Canada
Nov 27, 2008
#3
  • Nov 27, 2008
  • #3
The centering pin will be a problem. You could definately drill a hole in the leafpack for a new pin, but I'd be worried the leafs would crack/break at the old pin's location.

Like 10secgoal mentions you'd also have to shim the axle, get a longer driveshaft, and possibly replace brake hydrolic line and parking brake cables. Shock angles, length, and mounting locations might also be a concern.
 
D

D.Hearne

New Member
Sep 29, 2000
11,730
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south louisiana
Nov 28, 2008
#4
  • Nov 28, 2008
  • #4
It's more likely the springs would crack at the drilled hole than the old hole. You're playing with fire here in drilling holes in springs and taking your life in your hands. He needs to come up with a better,safer solution.
 

fawcett

Member
Sep 10, 2003
380
0
16
Cohasset, Ma
Nov 28, 2008
#5
  • Nov 28, 2008
  • #5
Any ideas on how he can roll the rear wheels back 2 inches without risking his life?
This sounds dangerous!
 
F

ForceFed70

That's why they call it "dope"
Founding Member
Dec 6, 1999
4,818
1
69
BC Canada
Nov 28, 2008
#6
  • Nov 28, 2008
  • #6
fawcett said:
Any ideas on how he can roll the rear wheels back 2 inches without risking his life?
This sounds dangerous!
Click to expand...

Move the spring mounts 2" back.
 

mrmustangman357

Member
Feb 11, 2007
763
3
18
Nov 28, 2008
#7
  • Nov 28, 2008
  • #7
drill the perches in the axle longer so they reengage the pins in the leaves/ not quite 2" but I dunno why you would do it in the first place?
 

4FUNFORDS

Founding Member
Dec 19, 1999
345
0
16
Salem OR
Nov 29, 2008
#8
  • Nov 29, 2008
  • #8
mrmustangman357 said:
not quite 2" but I dunno why you would do it in the first place?
Click to expand...

Because the 64 Falcon puts the stock tire very close to the front edge of the opening on the quarter panel. Putting on larger diamer tires will either require sheetmetal surgery to enlarge the wheel opening, or relocating the axle backwards. Try calling Calvert Racing - they make split monoleaf steel leaf springs - and can probably set up a set to move the centering pin.
 
1

10secgoal

Active Member
Dec 1, 2003
2,801
3
49
San Diego
Nov 29, 2008
#9
  • Nov 29, 2008
  • #9
Good lord that's a huge sig !!
 
B

bnickel

Founding Member
Aug 21, 2002
5,640
3
77
lubbock, texas
Nov 29, 2008
#10
  • Nov 29, 2008
  • #10
Eaton Detroit Spring will make custom springs packs pretty much anyway you want them, they made the original springs for Ford for many years, and I think they still do too.

Eaton Detroit Spring
 

latamud

Founding Member
Oct 22, 2002
791
2
19
Tampa, FL
Nov 30, 2008
#11
  • Nov 30, 2008
  • #11
I've seen gassers at the car shows which change the leaf spring mounting points rearward to fit bigger tires.
 
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