The Ford Torino Page Homepage
Forum Home Forum Home > Model Specific Forum > General Automotive Technical Discussion
  New Posts New Posts RSS Feed - Change diff?
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Change diff?

 Post Reply Post Reply
Author
Message
Anderslober View Drop Down
Senior Member
Senior Member
Avatar

Joined: 30-July-2019
Location: Denmark
Status: Offline
Points: 763
Post Options Post Options   Thanks (0) Thanks(0)   Quote Anderslober Quote  Post ReplyReply Direct Link To This Post Topic: Change diff?
    Posted: 20-May-2020 at 2:36PM
Hello forum. I am slowly starting restoration of my 72 GTS 351-CJ/4sp.
According to the Marti report, my car has a `conventional rear ax le`...open diff. I would like to change the diff to a trak-lok or similar. My question is...what spline is the diff?

I would like to go with a 3.50 trak lok......any ideas on where to get one?. I am on a budget!Clap
Back to Top
californiajohnny View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: 05-October-2013
Location: winlock, wa
Status: Offline
Points: 14606
Post Options Post Options   Thanks (1) Thanks(1)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 20-May-2020 at 2:42PM
normally it's a 28 spline but best to pull 1 axle and count before you buy Wink
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
Back to Top
Rockatansky View Drop Down
Senior Member
Senior Member


Joined: 30-July-2010
Location: On The Road
Status: Offline
Points: 6059
Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 20-May-2020 at 3:32PM
on a budget, upgrade your existing 3rd member with a new or used Trac-Loc center section, new gear set and overhaul kit
72 GT Ute
   
Back to Top
Anderslober View Drop Down
Senior Member
Senior Member
Avatar

Joined: 30-July-2019
Location: Denmark
Status: Offline
Points: 763
Post Options Post Options   Thanks (0) Thanks(0)   Quote Anderslober Quote  Post ReplyReply Direct Link To This Post Posted: 20-May-2020 at 4:29PM
Yuuup! Those are my exact intentions. I will pull the axle and make sure...and then buy a kit.

Will post....
Back to Top
Anderslober View Drop Down
Senior Member
Senior Member
Avatar

Joined: 30-July-2019
Location: Denmark
Status: Offline
Points: 763
Post Options Post Options   Thanks (0) Thanks(0)   Quote Anderslober Quote  Post ReplyReply Direct Link To This Post Posted: 20-May-2020 at 4:31PM
Johnny....dont forget me......I am still wanting a left front fender section....Smile lemme know....
Back to Top
californiajohnny View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: 05-October-2013
Location: winlock, wa
Status: Offline
Points: 14606
Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 20-May-2020 at 4:59PM
i haven't Wink i may have a possibility but would mean a lot of work for meConfused
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
Back to Top
pete rad View Drop Down
Senior Member
Senior Member


Joined: 29-November-2014
Location: usa
Status: Offline
Points: 305
Post Options Post Options   Thanks (0) Thanks(0)   Quote pete rad Quote  Post ReplyReply Direct Link To This Post Posted: 21-May-2020 at 1:03PM
Back to Top
pete rad View Drop Down
Senior Member
Senior Member


Joined: 29-November-2014
Location: usa
Status: Offline
Points: 305
Post Options Post Options   Thanks (0) Thanks(0)   Quote pete rad Quote  Post ReplyReply Direct Link To This Post Posted: 21-May-2020 at 3:53PM
There are 2 more ring and pinion sets below, you will have to ask the person who is selling them if they are for the traction lock/limited slip differentials.

https://hartford.craigslist.org/pts/d/enfield-ford-350-ring-and-pinion-for-9/7113409575.html

https://akroncanton.craigslist.org/pts/d/akron-350-ratio-ford-ring-and-pinion/7119475125.html

Edited by pete rad - 21-May-2020 at 4:10PM
Back to Top
pete rad View Drop Down
Senior Member
Senior Member


Joined: 29-November-2014
Location: usa
Status: Offline
Points: 305
Post Options Post Options   Thanks (0) Thanks(0)   Quote pete rad Quote  Post ReplyReply Direct Link To This Post Posted: 21-May-2020 at 3:54PM
Back to Top
pete rad View Drop Down
Senior Member
Senior Member


Joined: 29-November-2014
Location: usa
Status: Offline
Points: 305
Post Options Post Options   Thanks (0) Thanks(0)   Quote pete rad Quote  Post ReplyReply Direct Link To This Post Posted: 21-May-2020 at 9:23PM
Back to Top
pete rad View Drop Down
Senior Member
Senior Member


Joined: 29-November-2014
Location: usa
Status: Offline
Points: 305
Post Options Post Options   Thanks (0) Thanks(0)   Quote pete rad Quote  Post ReplyReply Direct Link To This Post Posted: 21-May-2020 at 9:24PM
Back to Top
pete rad View Drop Down
Senior Member
Senior Member


Joined: 29-November-2014
Location: usa
Status: Offline
Points: 305
Post Options Post Options   Thanks (0) Thanks(0)   Quote pete rad Quote  Post ReplyReply Direct Link To This Post Posted: 21-May-2020 at 9:24PM
Back to Top
72FordGTS View Drop Down
Admin Group
Admin Group
Avatar
GTS.org Admin

Joined: 06-September-2005
Location: Ontario, Canada
Status: Offline
Points: 5802
Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 22-May-2020 at 4:48AM
Definitely pull the axle to check the spline count. If you can rebuild the rear end yourself you will save a lot of money just buying a kit listed above. Even if you can't rebuild the rear end, maybe there is someone local that can do it?

Summit and Speedway have fully assembled third members but they are way pricier and would cost a lot to ship overseas. But a Currie or Moser rear end has upgrades over a stock Ford rear.
Vince

1972 Ford GTS Sportsroof - Survivor, One Family car

GTS.org Admin
Back to Top
pete rad View Drop Down
Senior Member
Senior Member


Joined: 29-November-2014
Location: usa
Status: Offline
Points: 305
Post Options Post Options   Thanks (0) Thanks(0)   Quote pete rad Quote  Post ReplyReply Direct Link To This Post Posted: 22-May-2020 at 2:15PM
Back to Top
pete rad View Drop Down
Senior Member
Senior Member


Joined: 29-November-2014
Location: usa
Status: Offline
Points: 305
Post Options Post Options   Thanks (0) Thanks(0)   Quote pete rad Quote  Post ReplyReply Direct Link To This Post Posted: 22-May-2020 at 2:18PM
https://bozeman.craigslist.org/pts/d/bozeman-ford-9-rear-ends/7125196938.html

This next person below has a 9" for sale but he does not know what gear ratio it is, or if it is a trac loc. But the price is good.

https://fortcollins.craigslist.org/pts/d/fort-collins-ford-9-differential-31/7112416894.html
Back to Top
Big Bird View Drop Down
Senior Member
Senior Member
Avatar

Joined: 25-August-2013
Location: New York
Status: Offline
Points: 4194
Post Options Post Options   Thanks (0) Thanks(0)   Quote Big Bird Quote  Post ReplyReply Direct Link To This Post Posted: 23-May-2020 at 3:28AM
Gear sets are the same trac-loc/no trac-loc.
Aftermarket lockers are probably a better deal than rebuilding a 40+ year old unit.
Shipping will probably be a killer.
"What we do in full frontal view, is more honest than your cleaned-up mind."
Randy
1979 T-Bird
2005 F-150 STX RCSB 4.6, 3.55 LSD
How the Heck does a REGULAR CAB SHORTBED weigh over 5200 pounds?
Back to Top
Rockatansky View Drop Down
Senior Member
Senior Member


Joined: 30-July-2010
Location: On The Road
Status: Offline
Points: 6059
Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 23-May-2020 at 5:28AM
i have a PowerTrax Loc-Right unit in my 2011 Crown Vic 8.8 ...

(retrofit Detroit locker style differential)

i definitely don't recommend it for a daily driver type vehicle and would not do it again.

it's coming out and a Trac-Loc out of a Mustang is going in (clutch pack limited slip style differential)
72 GT Ute
   
Back to Top
Big Bird View Drop Down
Senior Member
Senior Member
Avatar

Joined: 25-August-2013
Location: New York
Status: Offline
Points: 4194
Post Options Post Options   Thanks (0) Thanks(0)   Quote Big Bird Quote  Post ReplyReply Direct Link To This Post Posted: 23-May-2020 at 7:02AM
Powertrax and any Detroit lockers are BRUTAL, especially in snow...
Was thinking modern replacements as opposed to re-re-rebuilding 40+ year old stuff when the supply line for parts is 1800 miles long.
"What we do in full frontal view, is more honest than your cleaned-up mind."
Randy
1979 T-Bird
2005 F-150 STX RCSB 4.6, 3.55 LSD
How the Heck does a REGULAR CAB SHORTBED weigh over 5200 pounds?
Back to Top
albo74 View Drop Down
Senior Member
Senior Member
Avatar

Joined: 25-February-2006
Location: ME. USA
Status: Offline
Points: 616
Post Options Post Options   Thanks (0) Thanks(0)   Quote albo74 Quote  Post ReplyReply Direct Link To This Post Posted: 23-May-2020 at 11:04AM
This is the same set up I have in my car . 351 CJ with a 4 speed manual shift ,  The original owner knew just what he wanted , and I do like the Bench seat. but he ordered it with the 3.50 open rear end , I never drive this car in the rain or snow  ,  I'm thinking Speed way  3X2 gears only,  3.50 ,  28 spline is the way to go , https://www.youtube.com/watch?v=mnuGDOfhdd4

Edited by albo74 - 23-May-2020 at 11:13AM
albos73gts
Back to Top
Dubz View Drop Down
Member
Member


Joined: 26-April-2020
Location: Manitoba
Status: Offline
Points: 49
Post Options Post Options   Thanks (0) Thanks(0)   Quote Dubz Quote  Post ReplyReply Direct Link To This Post Posted: 24-May-2020 at 10:14AM
anyone on here running a truetrac setup?  It's what I've been eyeing for when I get to the stage of getting an LSD, seems like a good deal that you don't need clutch rebuilds or dealing with the issues of a standard detroit locker.

For over the pond, it might be a good option so you aren't needing extras in a few years?


Edited by Dubz - 24-May-2020 at 11:59AM
1974 Gran Torino in flat black 351W/C6
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.06
Copyright ©2001-2023 Web Wiz Ltd.

This page was generated in 0.109 seconds.