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Author Topic:   8" Limited Slip
69 Sportsroof
Gearhead

Posts: 1421
From: Valley, Alabama, USA
Registered: Mar 2002

posted 03-01-2003 08:57 AM     Click Here to See the Profile for 69 Sportsroof   Click Here to Email 69 Sportsroof     Edit/Delete Message   Reply w/Quote
What should I look for at the junkyard to determine if a car has a limited slip dif in it? Does that question make any sense?

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1969 Mustang Sportsroof
302 with 3 Speed Stick
!!!Totally Stock!!!

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Dave Gibson
Moderator

Posts: 7851
From: Norfolk, Virginia, USA M&M#166 MCA#47921
Registered: Aug 99

posted 03-01-2003 10:07 AM     Click Here to See the Profile for Dave Gibson   Click Here to Email Dave Gibson     Edit/Delete Message   Reply w/Quote
Dave,
Why not look for a nine inch "N" case rear end? Should be an easy swap out if you get the right length. I've got a lead on nine inch with either 3:00 or 3:25 gears. Should know more about it later this weekend.

Dave & Terri

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'65 Mustang Fastback
'02 Explorer XLT
I don't suffer from insanity. I enjoy every minute of it!
We have enough youth, how about a fountain of smart?

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V8 Thumper
Gearhead

Posts: 4044
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 03-01-2003 10:16 AM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Trac-Loc differentials' ring gear bolts are accessable only with a socket; meaning that the bolt heads are 'recessed' (girth of the carrier to accomodate the clutch pack). You cannot get a combination wrench on the ring gear bolts of a T-Loc.

The 3rd member must be removed from the axle housing to determine this

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1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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Dave Gibson
Moderator

Posts: 7851
From: Norfolk, Virginia, USA M&M#166 MCA#47921
Registered: Aug 99

posted 03-01-2003 11:44 AM     Click Here to See the Profile for Dave Gibson   Click Here to Email Dave Gibson     Edit/Delete Message   Reply w/Quote
Dave,
You got me thinking, so I pulled out the books. Here is what you want to look for if the rear end has a tag bolted to the third member:

Effective with 1963 models, all axles came with an identification tag that was attached to the front carrier of the axle approximately at the one o'clock position. On this tag is a coded message that identifies the axle type. Below this code is the ratio, followed by the build date and assembly plant code. For instatance the numbers 3.25 would be an open rear end and 3L25 would be a traction lock. Look for the letter "L" in the ratio. Right after the ratio, you should have the build date that looks something like this: 5C3. The "5" is the year (1965), "C" is for the build month, and "3" is for the week of the month.
Also check out the Mustangsandmore archives for more information on rear axles.

Dave & Terri

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'65 Mustang Fastback
'02 Explorer XLT
I don't suffer from insanity. I enjoy every minute of it!
We have enough youth, how about a fountain of smart?

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69 Sportsroof
Gearhead

Posts: 1421
From: Valley, Alabama, USA
Registered: Mar 2002

posted 03-01-2003 06:47 PM     Click Here to See the Profile for 69 Sportsroof   Click Here to Email 69 Sportsroof     Edit/Delete Message   Reply w/Quote
Thanks guys. That's good info.

Dave - I'm not planning on building an engine strong enough to bust an 8" but if a deal too good to pass up came along (as in free), I'd get it.

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Fstln69
Gearhead

Posts: 355
From: Westmont,il
Registered: Jan 2003

posted 03-01-2003 07:24 PM     Click Here to See the Profile for Fstln69   Click Here to Email Fstln69     Edit/Delete Message   Reply w/Quote
On the n case 9's to the small case is there a length difference?meaning does the companion flange stick out further or can you swap centers without messing with the driveshaft?

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69 fairlane 351w [email protected] before M&M.. after??
always in search of more HP and faster ET'S

Fstln69 Pics Page

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