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Author Topic: Who can decode this rear end tag for me?  (Read 4763 times)

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jayb

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Who can decode this rear end tag for me?
« on: June 02, 2015, 10:35:34 PM »
This is from the 8" rearend that came out of my 68 Mustang.  I thought it was just more junkyard scrap, but then yesterday when I was moving it around I noticed that when I turned the pinion, both axles moved - in the same direction!  Could this thing have a Traction Lok in it?  I know less than nothing about 8" rear ends, so any insight is appreciated.  The tag reads:

WCZ-V1
2.79 7GC 930

A small block Mustang with 2.79 gears!  No wonder the car was a dog...
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Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

thatdarncat

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Re: Who can decode this rear end tag for me?
« Reply #1 on: June 02, 2015, 10:49:36 PM »
No Traction Lok per the tag, but anything is possible after all these years. A Traction Lok would be 2L.79 in the ratio section. Other info is it's for a '67-'70 Mustang ( and possibly Cougar, I didn't check ) 28 spline. Date code 1967 / July / 3rd week. Medium differential bearing, Medium axle bearing. 930 is an axle plant code.
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Kevin Rolph

1967 Cougar Drag Car ( under constuction )
1966 7 litre Galaxie
1966 Country Squire 390
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machoneman

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Re: Who can decode this rear end tag for me?
« Reply #2 on: June 03, 2015, 08:02:06 AM »
Yes, it could have a TractionLok differential. Most 8" rears did have high 2 and very low 3 series gearing.

Kevin's 9" site does have some 8" detail, about 1/2 way down the opening  page.

http://www.kevinstang.com/Ninecase.htm

 
« Last Edit: June 03, 2015, 08:07:08 AM by machoneman »
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Bob Maag

FElony

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Re: Who can decode this rear end tag for me?
« Reply #3 on: June 03, 2015, 05:14:08 PM »
Quote from: jayb on June 02, 2015, 10:35:34 PM
This is from the 8" rearend that came out of my 68 Mustang.  I thought it was just more junkyard scrap, but then yesterday when I was moving it around I noticed that when I turned the pinion, both axles moved - in the same direction!  Could this thing have a Traction Lok in it?  I know less than nothing about 8" rear ends, so any insight is appreciated.  The tag reads:

WCZ-V1
2.79 7GC 930

A small block Mustang with 2.79 gears!  No wonder the car was a dog...

Check with local street rod builders, as they often buy 8's drum-to-drum for lightweight builds.
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Heo

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Re: Who can decode this rear end tag for me?
« Reply #4 on: June 03, 2015, 05:49:24 PM »
Rotate one drum if the other rotate the same direction
its alocker if it rotate oposit or dont rotate its no locker
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jayb

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Re: Who can decode this rear end tag for me?
« Reply #5 on: June 03, 2015, 07:53:08 PM »
I checked it out in more detail tonight and it is not a locking differential;  the drums moved together at first but when I jammed a screwdriver between two of the wheel studs on one side to hold it in place, the other drum would still rotate.  Then when I took the screwdriver out, they rotated in opposite directions.  Looks like the 2.79 gear set in there, just like the tag said.  Oh well...  ::)
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Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

Heo

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Re: Who can decode this rear end tag for me?
« Reply #6 on: June 04, 2015, 03:27:59 AM »
The axles are the same as in a  28 spline 9 inch rearend
I have used a few of them to shortening wider 9 inch axles
in the 80s when aftermarket axles was hard to find
And as said earlier the favorite streetroders axle
so it may have some resale value
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The defenition of a Gentleman, is a man that can play the accordion.But dont do it
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