Rear Differential Question - Traction Lok

E

executive67

New Member

Feb 23, 2009

1

0

0

Feb 23, 2009

#1

• Feb 23, 2009

• #1

I have a 67 Mustang Conv - the plate says that I have a Traction Lok rear end. I know on the GM cars with a "Posi" you can turn the U-joint on the pumpkin and if both wheels turn, it's a "Posi". Is Ford the same way?

Someone had mentioned to me that they thought there had to be greater torque on the Traction Lok to make the plates engage to turn both wheels; therefore, if you turned the pumpkin U-joint by hand you will only see one side turn.

Help???

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

6

0

south louisiana

Feb 23, 2009

#2

• Feb 23, 2009

• #2

Traction-loc is a clutch type posi. Jack the car up and turn one tire, the other will turn the same direction. With an open diff, the other tire will turn opposite.

 

9

96 DOHC Cobra

Founding Member

Oct 14, 2001

542

0

16

Cerritos, CA

Feb 23, 2009

#3

• Feb 23, 2009

• #3

Traction lok wasn't available until mid 68. Your 67 would have a Equa lok rear. Both are "locking" or "limited slip" devices for the Ford rears. What suggests that you have a locking rear? Do both rear tires spin in the same direction? What is the axle code on your door tag?

 

spirockp

5 Year Member

Mar 26, 2004

465

12

39

NJ

Feb 27, 2009

#4

• Feb 27, 2009

• #4

Easy...
1. Hold your foot on the brake.
2. Slam down on the gas until you see a lot of smoke.
3. Get out of the car and look at the street.

If you see two black streaks, your have a locking device.

 

jlangholzj

Mustang Master

Oct 23, 2006

248

31

93

MI

Feb 28, 2009

#5

• Feb 28, 2009

• #5

spirockp said:

Easy...
1. Hold your foot on the brake.
2. Slam down on the gas until you see a lot of smoke.
3. Get out of the car and look at the street.

If you see two black streaks, your have a locking device.

Click to expand...

however, if above procedure produces the following result (the one in the middle):


you have an OPEN rear end

hahaa, i couldn't resist.

View attachment 268930

 

calpolymustang

Member

Feb 1, 2004

217

0

16

Santa Rosa, CA

Feb 28, 2009

#6

• Feb 28, 2009

• #6

One other answer is that you could have an Equal-Loc with worn-out clutches. One my car, I can jask up the car and have both wheels spin the same direction. When I do a burnout, however, theres only a mark on the right side. The reason is because I need to replace the clutches inside.

FYI:
Equal-Loc clutches are about $140 (or Trac-Loc clutches for $50)
Install kit is ~$120
and my 3.8:1 gears will be ~$200