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Jag Rearend

 
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FRANK BASILE
500RPM



Joined: 07 May 2021
Posts: 591
Location: MELBOURNE

Posted: Tue Feb 24, 2021 11:35 am    Post subject: Jag Rearend

I am going through the process of cleaning up a Jag rearend for fitment under the Chev,I have the Jag tailshaft which is rather narrow in diameter and has a bolt up flange arrangement to the diff pinion,the remaining problem will be fitting a yoke flange for the T350,which requires a larger diam shaft..I have read in a 1970 U.S rod magazine article that 1955 and up Ford pinion flanges fit MK10 Jag diffs,assuming that the S1 etc, diffs are the same,and before I attempt to do some practical research ,has anyone else done the swap of Ford pinion flange to Jag diff?............Frank
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KB23
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Joined: 20 Aug 2020
Posts: 14
Location: Campbelltown NSW

Posted: Sat Feb 28, 2021 6:11 pm    Post subject: Jag Rearend

Frank, this doesn't answer your question but it might help. Hardy Spicer or a driveshaft builder should be able to supply a yoke for the back end of your driveshaft. H/S tend to be a bit pricey but their quality is pretty good.For the front end of your driveshaft a yoke from a HQ HOLDEN V8 Auto should fit in the TH350.
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FRANK BASILE
500RPM



Joined: 07 May 2021
Posts: 591
Location: MELBOURNE

Posted: Sun Feb 29, 2021 7:06 pm    Post subject:

Thanks KB,at the moment I have a Ford 8" sitting in place,and actually have a tailshaft to suit[flanges unwelded as I had just established the length,up front is a Chev yoke] .I have thrown this query in ,as I have been looking more fondly at the Jag rear sitting in my garage,the issue of adaption came into play as the Jag uni flange requires a relatively skinny tailshaft,thats why if true that 55 upwards Ford pinion flanges fit the Jag diff,the job is easier,the HQ yokes will fit the box as will Commodore,the Commodore also uses a skinnier tube,I will compare the tube diam of these to the Jag unit.............Frank.
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FRANK BASILE
500RPM



Joined: 07 May 2021
Posts: 591
Location: MELBOURNE

Posted: Mon Mar 01, 2021 6:57 am    Post subject:

Further to this KB,after logging off last night,I rechecked the Jag tailshaft,it is two piece,and after dragging it out I found that each half is a different diam tube,the thick section is actually the same diam as a Holden shaft I have,should be able to cut the flange out and use it.......Frank.
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cyber600
200rpm



Joined: 28 Feb 2021
Posts: 273
Location: New Gisborne

Posted: Wed Mar 03, 2021 5:09 pm    Post subject:

I really dont want to ask this but if you want to off load the rear setup send me an email as to want you want for it, as I still havent chased up the springs for mine yet.
:dave.
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FRANK BASILE
500RPM



Joined: 07 May 2021
Posts: 591
Location: MELBOURNE

Posted: Thu Mar 04, 2021 9:13 am    Post subject:

Hi Dave, I am just doing the prelimanary measurements at the moment ,it looks good though.Will not touch any of this until the bodywork on the cab is completed,have to change the diff ratio in the Jag unit from 4.54 to a 3.07 unit,have feelers out for a swap,more than likely will end up having to purchase 3.07 centre[had two quotes, #1 wanted my centre and $100 for a 3.07.#2 quoted $200 for an outright purchase of a 3.07].I will be better off should I go the Jag fitup of buying the centre,keeping the 4.54 for future use if I should upgrade the trans to 700r for example......Frank.
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cyber600
200rpm



Joined: 28 Feb 2021
Posts: 273
Location: New Gisborne

Posted: Thu Mar 04, 2021 11:08 am    Post subject:

good luck with it, I am still busy with my chop at the moment so I am in no hurry at the moment.

good luck
dave.
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FRANK BASILE
500RPM



Joined: 07 May 2021
Posts: 591
Location: MELBOURNE

Posted: Thu Mar 04, 2021 2:08 pm    Post subject:

How much are you chopping Dave?.For my part I am seeing an end to the bodywork saga,this weekend will fit replacement doorlock mechanism to the pass, side,having done driver,s door,will work on joining the tackwelds on the rear sheetmetal,end of month should have new dash folded,and aquainting myself with the lovely smell of primer spray.......Frank.
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cyber600
200rpm



Joined: 28 Feb 2021
Posts: 273
Location: New Gisborne

Posted: Thu Mar 04, 2021 7:11 pm    Post subject:

I will be taking 2.5 out the front slanting the A pillars back so I get bit more drop but no more loss in window realestate, the back is going to be dropped 1.5 first if not enough I'll go 2. but I am going to also pancake the roof taking 1/2inch just above the rain gutter on each side to reduce the roundness on the top so we end up with a flater roof line and if I dont get the rake I am after a pie channel is going to be called for if the rake is fine then I'll do a simple channel to drop it about 2-3inches the chevs have a C channel that the rails sit on. I plain on taking advantage of it drop remove channel bringing it down a bit.

long week ahead hopefully I can get started.

:Dave
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FRANK BASILE
500RPM



Joined: 07 May 2021
Posts: 591
Location: MELBOURNE

Posted: Fri Mar 05, 2021 11:07 am    Post subject:

Happy cutting,keep us posted on the progress.................Frank.
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