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  8.8 into a classic Mustang

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Author Topic:   8.8 into a classic Mustang
Hell_Fish
Gearhead

Posts: 680
From: Austin, TX.
Registered: May 2002

posted 12-09-2002 08:23 AM     Click Here to See the Profile for Hell_Fish   Click Here to Email Hell_Fish     Edit/Delete Message   Reply w/Quote
Will a 8.8 from a fox body Mustang work in a 69?

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68DARKHORSE
Gearhead

Posts: 404
From: Austin, Tx
Registered: Aug 2002

posted 12-09-2002 12:13 PM     Click Here to See the Profile for 68DARKHORSE   Click Here to Email 68DARKHORSE     Edit/Delete Message   Reply w/Quote
You can weld on leaf spring perches or check with http://www.griggsracing.com for the torque/control arm parts.

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Hell_Fish
Gearhead

Posts: 680
From: Austin, TX.
Registered: May 2002

posted 12-09-2002 12:21 PM     Click Here to See the Profile for Hell_Fish   Click Here to Email Hell_Fish     Edit/Delete Message   Reply w/Quote
So all the Fox bodies and new Mustangs use IRS? Sweet!

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68DARKHORSE
Gearhead

Posts: 404
From: Austin, Tx
Registered: Aug 2002

posted 12-09-2002 01:27 PM     Click Here to See the Profile for 68DARKHORSE   Click Here to Email 68DARKHORSE     Edit/Delete Message   Reply w/Quote
They don't come IRS.
The Cobra IRS does bolt in the other cars though.

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Hell_Fish
Gearhead

Posts: 680
From: Austin, TX.
Registered: May 2002

posted 12-09-2002 01:46 PM     Click Here to See the Profile for Hell_Fish   Click Here to Email Hell_Fish     Edit/Delete Message   Reply w/Quote
I think I got it now. To tired to think today.

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Fastymz
Moderator

Posts: 12673
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 12-09-2002 07:11 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
The following information about late model 8.8 inch rear ends to evaluate the possibility of swapping
them into early Mustangs. The 8.8" rear is almost as strong as a 9" and would be a very good choice for a hot street car. Good, low mileage versions of these rears are easily located and performance parts are readily available. Considering the ever shrinking supply of the popular Lincoln Versailles 9"ers with disc brakes, the Explorer 8.8" option looks really good. The following charts compare critical dimensions to those used in early Mustangs.

1991 Ranger 8.8" 1965.66 Mustang 8"

Width 56.25" wheel flange to wheel flange 57.25" wheel flange to wheel flange

Springs Leaf, 39.125" on center with pads located on top of axle tube Leaf, 43" on center with pads located below axle tube

Brakes 10x2.5" drums 10x1.75" drums

Yoke Flange type u-joint mount Strap type u-joint mount

Tube Diameter 2.815" 2.75" (?)

Splines 28 28

Shocks Mount to bracket on rear end Mount to bracket on lower spring plate

Wheels 5 lug on 4.5" bolt circle 5 lug on 4.5" bolt circle

1997 Explorer 8.8" 1967/70 Mustang 9"

Width 59.5" wheel flange to wheel flange 59.25" wheel flange to wheel flange

Springs Leaf, 39.125" on center with pads located below axle tube Leaf, 43" on center with pads located below axle tube

Brakes Disc 10x1.75" drums

Yoke Flange type u-joint mount Strap type u-joint mount

Tube Diameter 3.25" 3.25"

Splines 31 spline 28 or 31 spline

Shocks Mount to bracket on lower spring plate Mount to bracket on lower spring plate

Wheels 5 lug on 4.5" bolt circle 5 lug on 4.5" bolt circle


The Explorer also had a .75" diameter sway bar that can be easily adapted to the Mustang. It also had a 3.55 to 1 ratio gear set and limited slip differential.

The main changes that will need to be made are as follows. They shouldn't be to expensive or difficult:

? Move the spring pads to the correct location.

? Adapt the driveshaft to the flange style yoke.

? Adapt the brake lines and parking brake cables.

If you aren't familiar with difference between flange and strap type u-joint mounts, check out this site:

http://www.homestead.com/therangerstation/Explorer8_8.html

I hope some of this info helps,also talk to TomP he knows more about it.

SCOOP

------------------
oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

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