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Author
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Topic: Another 68 J-code Question
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68 S-code GT
Gearhead Posts: 334
From: Sayreville, NJ, US
Registered: Mar 2000
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posted 01-24-2001 06:04 PM
   
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
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posted 01-24-2001 10:00 PM
I had a 68 J code with front power discs, & an auto & mine had a 9" rear.------------------
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
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posted 01-25-2001 12:52 AM
All the "J" codes that I have seen and owned had 3.25 9 inch rear ends in them.  ------------------
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
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posted 01-25-2001 07:50 AM
Mine has a 9�� in it now but I��m 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.------------------
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
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posted 01-25-2001 08:03 AM
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
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posted 01-25-2001 08:33 AM
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
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posted 01-25-2001 12:34 PM
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
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posted 01-27-2001 06:22 AM
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
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posted 01-27-2001 11:22 AM
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. ------------------
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
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posted 01-27-2001 09:19 PM
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
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posted 01-27-2001 10:15 PM
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
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posted 01-28-2001 03:02 AM
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
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posted 01-28-2001 07:56 AM
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
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posted 01-28-2001 10:59 AM
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. ------------------
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
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posted 01-29-2001 01:36 PM
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
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posted 01-29-2001 02:41 PM
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
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posted 01-30-2001 12:34 AM
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. ------------------
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
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posted 01-30-2001 04:39 PM
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
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posted 01-30-2001 05:49 PM
Yes, L for Limited Slip.------------------
'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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