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Author Topic:   Another 68 J-code Question
68 S-code GT
Gearhead

Posts: 334
From: Sayreville, NJ, US
Registered: Mar 2000

posted 01-24-2001 06:04 PM     Click Here to See the Profile for 68 S-code GT   Click Here to Email 68 S-code GT     Edit/Delete Message   Reply w/Quote
Did these cars come with 8 or 9 rears? The Shelbys probably had a 9 so I guess their out of the question.

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Mike65
Gearhead

Posts: 1279
From: Columbia,NJ, USA. 65 Fastback, 69 Coupe MCA #-04549
Registered: Dec 2000

posted 01-24-2001 10:00 PM     Click Here to See the Profile for Mike65   Click Here to Email Mike65     Edit/Delete Message   Reply w/Quote
I had a 68 J code with front power discs, & an auto & mine had a 9" rear.

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Mike & Robin MCA#-04549
65 Fastback
99 Explorer Sport
96 Ranger
87 Crown Vic

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Moneymaker
Moderator

Posts: 10921
From: Lyons, IL, USA
Registered: May 99

posted 01-25-2001 12:52 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
All the "J" codes that I have seen and owned had 3.25 9 inch rear ends in them.

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Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link

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68 S-code GT
Gearhead

Posts: 334
From: Sayreville, NJ, US
Registered: Mar 2000

posted 01-25-2001 07:50 AM     Click Here to See the Profile for 68 S-code GT   Click Here to Email 68 S-code GT     Edit/Delete Message   Reply w/Quote
Mine has a 9 in it now but Im told the tag is a 1970 style tag with a 1969 date on it. Its got a lot of gunk on it but you can see some red primer on the center section.

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68 S-code FB GT 4spd/3.25
68 J-code Coupe C4/3.00 PDB PS AC
99 F150 XLT Ext/cab, 4X4, 5.4L, 3.55LS

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CannedHeat
Journeyman

Posts: 11
From: CO
Registered: Jul 2000

posted 01-25-2001 08:03 AM     Click Here to See the Profile for CannedHeat   Click Here to Email CannedHeat     Edit/Delete Message   Reply w/Quote
I also have a 68 J code coupe and I am pretty sure that the rear end is an 8" with
3.00 gears. I bought the car from the original owner and I am confident that it came that way from the factory. The J codes are pretty good sleepers as mine looked like a 6 banger with those cheapie dog-dish style wheel covers and painted Medowlark Yellow! I surprised many people at stoplights! I kept the original motor and swapped in a hot 289. I plan on rebuilding the 302 because it had over 240,000 miles on it and was never rebuilt. It still ran great right up to the time I replaced it with the 289.

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mellowyellow
Gearhead

Posts: 3206
From: So. Fl.
Registered: Aug 2000

posted 01-25-2001 08:33 AM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
I had a GT 350 Shelby that I bought and sold. It HAD a 9' 3:25 rear.

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sigtauenus
Gearhead

Posts: 1413
From: Beaufort, SC
Registered: Jun 2000

posted 01-25-2001 12:34 PM     Click Here to See the Profile for sigtauenus   Click Here to Email sigtauenus     Edit/Delete Message   Reply w/Quote
my J-code has an 8" in it, its a 3.00 or so, but I haven't opened it up yet so don't know for sure.

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T5owner
Gearhead

Posts: 434
From: Germany
Registered: Apr 2000

posted 01-27-2001 06:22 AM     Click Here to See the Profile for T5owner     Edit/Delete Message   Reply w/Quote
My 68 is a J-code and has 8" 3.00.
I am pretty sure most J-codes (except maybe for the 68 GT350) came standard with an 8".
There is still reason as for a 9", as end of 67 there was UAW strike with pretty much mixed up cars. A fellow had a early 68 with even some 67 spare parts originally from the factory.

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Moneymaker
Moderator

Posts: 10921
From: Lyons, IL, USA
Registered: May 99

posted 01-27-2001 11:22 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
I forgot all about that stike. I was a "freshie" in high school back in 68. I do know friends of my brothers who had pruchased 68 FoMoCo products new that had to wait a long time for their ordered cars. Also, one in particular, a 68.5 CJ GT fastback 4 speed car that came with 3.91 gears from the factory. No where in the 68 liturature to they show anything steeper than 3.50 available. I saw it right on the window sticker as we went with him to go and pick the car up. It was a $46 dollar option with the eqa-loc.

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Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link

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Ryan Wilke
Gearhead

Posts: 571
From: Stanton, Michigan
Registered: Oct 2000

posted 01-27-2001 09:19 PM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
Alex,
Was the "Equa-loc" available in both 8" and 9" rears? Wasn't the "Equa-loc" the limited-slip differential offered up in the late 50's early 60's and then was replaced by the "Traction-loc" diff?
Ryan

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TomP
Moderator

Posts: 3423
From: Delta BC Canada
Registered: Dec 99

posted 01-27-2001 10:15 PM     Click Here to See the Profile for TomP   Click Here to Email TomP     Edit/Delete Message   Reply w/Quote
Traction Lok came in 68 , but my 73 Bronco had an Equalok in it ,copper washers and tag still on it ,not likely changed. I kinda think that because this rear end assembly (early Bronco) was the same from 66-77 that the earlier units may have been installed until they were used up on a low volume vehicle like that.
Cobras and Sunbeam Tigers are another example,1966 cars using 1964 engines , my guess is the engines were sold in a lump sum ,it took a couple years to use them up.

BTW... all the J-codes i've seen have 8" rear ends

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sigtauenus
Gearhead

Posts: 1413
From: Beaufort, SC
Registered: Jun 2000

posted 01-28-2001 03:02 AM     Click Here to See the Profile for sigtauenus   Click Here to Email sigtauenus     Edit/Delete Message   Reply w/Quote
Was a limited slip differential available originally in 8" rears? I always thought that was an option only on 9" rears, but never looked into it to find out for sure.

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mellowyellow
Gearhead

Posts: 3206
From: So. Fl.
Registered: Aug 2000

posted 01-28-2001 07:56 AM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
Sig: I have an 8" center section that is a limited slip. It is a 3:50 to 1 with a C-7 part no. It is definitely an odd ball. Saving it for my 65 if I should put in AOD.

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Moneymaker
Moderator

Posts: 10921
From: Lyons, IL, USA
Registered: May 99

posted 01-28-2001 10:59 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Equa-loc, Traction Loc, posi, twin pull, whatever you want to call it was always available in an 8" as an option. Even in Pintos and Mustang II's.

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Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link

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sigtauenus
Gearhead

Posts: 1413
From: Beaufort, SC
Registered: Jun 2000

posted 01-29-2001 01:36 PM     Click Here to See the Profile for sigtauenus   Click Here to Email sigtauenus     Edit/Delete Message   Reply w/Quote
Cool!! Is it something not too rare, that can be found in the junk yard or is it best to just buy it from somebody who handle's rear ends like Currie Enterprises?

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mellowyellow
Gearhead

Posts: 3206
From: So. Fl.
Registered: Aug 2000

posted 01-29-2001 02:41 PM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
Sig: There's a guy that advertises 8" center sections in Hemmings. He has been advertising every month for a spell. His phone no. in Cal. is 559-784-7809. He advertisers all ratios, but I don't know if any of them are limited slips.

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Moneymaker
Moderator

Posts: 10921
From: Lyons, IL, USA
Registered: May 99

posted 01-30-2001 12:34 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Sam, we have covered this before many a time. Many Mustang II's and Pinto V-6 wagons had 8 inch traction locs. You just have to do some judicious junk yard scrounging and you can find one. Or take Pete's advice and call the guy in Hemmings.

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Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link

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sigtauenus
Gearhead

Posts: 1413
From: Beaufort, SC
Registered: Jun 2000

posted 01-30-2001 04:39 PM     Click Here to See the Profile for sigtauenus   Click Here to Email sigtauenus     Edit/Delete Message   Reply w/Quote
Cool deal Alex. And just to refresh, the tag on the pumpkin will have a L in the gear ratio, right? Or am I thinking of something else?

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SteveLaRiviere
Administrator

Posts: 20706
From: Saco, Maine USA
Registered: May 99

posted 01-30-2001 05:49 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
Yes, L for Limited Slip.

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'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L Disposable Commuter

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