Click Here -> Please Consider Making a PayPal Contribution to the FordSix Forum!
2018 Contributors:
StarDiero75, curts56, DannyG, B RON CO, wsa111, Captainslow42, falconcritter
Econoline, THE FRENCHTOWN FLYER, 95FordFleetside, turbo6, Max_Effort, WorldChampGramp
cr_bobcat, C.S.Designs, pmuller9, gus91326, rwbrooks50, rocklord, drag-200stang, Big64my79Effie, CNC-Dude, gb500

2019 Contributors:
NJwpod, 1strodeo, mightynorseman, maxtrux, 6d7coupe, broncr, Phase3, 68Flareside240, bmbm40,
mustang6, WorldChampGramp, justintendo, BigBlue94, ags290, motorsickle1130, Rooster, ousooner919, ethanperry

Unknown->> M.Ketterer, T.Smith, J.Myers, P.McIntire - Please PM me (1966Mustang) and lemme know who you are!

General Interest - 7 1/4" Rear Ends

Moderator: Mod Squad

Ashley47
Registered User
Posts: 11
Joined: Wed Oct 17, 2018 11:58 pm

General Interest - 7 1/4" Rear Ends

Post #1 by Ashley47 » Thu Nov 29, 2018 9:29 pm

Whilst digging around my accumulated mess of parts I came across not 1 but 3 carriers for the 7 1/4". So I lined the up (with the Non-Locking 2 pinion from my car) for a group photo.
2 Equalocks, 1 x 2 pinion Non Locking and 1 x 4 Pinion Non Locking.

The 2 equalocks are strange creatures as one is U.S made the other Canadian. The inner dish is machined slightly different on both, the steel of the Canadian carrier is a little thicker, plus the Canadian one has an oil slinger whereas the U.S model doesn't. Both take a 2 1/2" pin for the pinion shaft which is different to the non lockings cases which take a 2 1/4" pin. The pin hole on the Canadian equalock has been countersunk possible due to the difference in thickness of the steel.
The 4 pinion case requires the 4211 C1DZ-4211-A 4 pinion kit for supporting the 4 spider gears.

Anyhow, just a bit of useless information which I wanted to share.

Image

bmbm40
Registered User
Posts: 1218
Joined: Tue Feb 22, 2005 6:25 pm
Location: Carson City, NV

Re: General Interest - 7 1/4" Rear Ends

Post #2 by bmbm40 » Fri Nov 30, 2018 7:35 pm

Good information. You have some nice parts available.
66 Bronco-1970 250, NV3550, DSII, 4 turn ps, uncut, 1" bl, 2.5" sl, front disc, twin stick D 20, 30 x 9.50
NEXT- direct mount 1.08 on D8 head, power brakes, rear limited slip, 3G, electric fan, electric upgrades, custom curved DSII, header, 31" tires

New guy? Get the Falcon Performance Handbook and Ford six high performance parts from https://vintageinlines.com

User avatar
xctasy
VIP Member
Posts: 6834
Joined: Sat Nov 09, 2002 10:40 am
Location: PO Box 7072 Dunedin 9011,South Island, NEW ZEALAND
Contact:

Re: General Interest - 7 1/4" Rear Ends

Post #3 by xctasy » Sat Feb 09, 2019 8:43 am

Wow man. Great info. :thumbup: :wow:

47 th post...was this just a co-incidence?

The subtle variant changes were possibly because the need for an Equal-lock was obviously met from other sources, Ashley.


viewtopic.php?t=71382

Post #47 by xctasy » Thu Sep 21, 2017

xctasy wrote:http://www.fordmuscleforums.com/mustang-pages-1965-1973/500968-limited-slip-7-25-rear-end.html


If you look around, the 7-1/4" axle has a 2.83 to 3.20, 3.50 and 4.00 crown wheel and pinion for it, and a limited slip diff Equa Lok version.

Mike from Classic in lines discussed it many years ago.



The link to the supplier is very helpful.


viewtopic.php?f=76&t=78193


The axle info I found on the differences in 7-1/4" diffs

viewtopic.php?t=78668
Image
XEC Ltd ICBE's Inter Continental Ballistic Engines-
FAZER 6Bi (M112 & EEC5) or FAZER 6Ti (GT3582 & EEC5) 425 HP 4.1L/250 I-6
FAZER 6V0 3x2-BBL Holley 188 HP 3.3L/200 I-6 or 235 HP 4.1L/250 I-6
X-Flow Engine Components Ltd http://www.xecltd.info/?rd=10

User avatar
xctasy
VIP Member
Posts: 6834
Joined: Sat Nov 09, 2002 10:40 am
Location: PO Box 7072 Dunedin 9011,South Island, NEW ZEALAND
Contact:

Re: General Interest - 7 1/4" Rear Ends

Post #4 by xctasy » Sat Feb 09, 2019 8:51 am

Is a four pinion Equalock a possibility?


Image

https://www.fordmuscleforums.com/mustan ... end-2.html
BJBOZ wrote:Picked it up from the post office this afternoon.
I must say the gent I purchased it from in Indiana has been great to deal with. Prompt posting and he didn't ask for any more postage than what USPS charged him. $65 from US to OZ. ^::
You can see the family history of the three carriers. I dropped it into the diff housing to check. All good.
L to Right
'66 Ford OZ utility carrier ( originally 4.00 ratio)
'67 Mustang open carrier (2.83 ratio)
'65/66 Equa-lok carrier ( He supplied the longer bolts that hold the pinion gear than the standard bolts)

Image
Image
XEC Ltd ICBE's Inter Continental Ballistic Engines-
FAZER 6Bi (M112 & EEC5) or FAZER 6Ti (GT3582 & EEC5) 425 HP 4.1L/250 I-6
FAZER 6V0 3x2-BBL Holley 188 HP 3.3L/200 I-6 or 235 HP 4.1L/250 I-6
X-Flow Engine Components Ltd http://www.xecltd.info/?rd=10

Ashley47
Registered User
Posts: 11
Joined: Wed Oct 17, 2018 11:58 pm

Re: General Interest - 7 1/4" Rear Ends

Post #5 by Ashley47 » Sun Feb 10, 2019 3:33 am

I wasn't aware of it being the 47th post. That number has followed me for years. Turning 47 as well this year.

In regards to a 4 pinion Equalock. No, the 4 pinion doesn't have a deep enough dish to hold the hub gear and splines, it's more like the conventional 2 pinion carrier and the 4 pinion only has the two holes for the pinion shaft.

Who is online

Users browsing this forum: No registered users and 5 guests