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Unread 07-10-2010, 06:41 AM   #1
kmd1776
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j20 steering box questions/upgrade

ok i dont really know where to post this, since it is for more then one jeep... but since im looking to do this in my 97 zj... ill post it here.


ok so i keep reading about a durango steering box upgrade, and a j20 steering upgrade. im more curious about the j20 since the j20 steering box seems to be better in everyway compared to stock and durango steering boxes

now my question is... what j20 box should i use?? or better yet, whats the difference between them?

here are the years with the coresponding a1 cardone numbers

'74.............. 27-6537
'75-'76......... 27-6529
'77-'79......... 27-6505
'80-'88......... 27-6528

anyone know the difference between these gear boxes??

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Unread 07-11-2010, 07:40 PM   #2
kmd1776
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anyone???
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Unread 07-12-2010, 01:51 AM   #3
5.9 ANDY
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you want after like 82, or something like that. if you ask for 1985, that will be correct.

however.... take note, that if you go to like auto zone or what ever and buy a new/reman box, you will more than likely get a j10 box, wich is not as desireable as the j20 box.

you could go out into the junk yard and get a j20 box, however, after 25 years of age, how good will that box be? not to mention, if its not the factory box at all?

these are all things to keep in mind when going with a j20 box, as this was my plan for a long time, but i since decided to just go with a durango box....im doing hydro assist anyways, so that will make up for not having all the greatness of a j20 box.
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Unread 07-12-2010, 05:16 AM   #4
kmd1776
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how can you tell the difference between a j20 and a j10 steering box??

also for the durango box... is it a 98 without snow plow package (a1 cardone # 27-7588) or with snow plow package (a1 cardone #27-7580)
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Unread 08-26-2010, 02:06 PM   #5
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ok well to update my findings... the 27-6529 gear box out of the 75-76 gear box has the wrong fittings to fit with the zj's factory power steering hose as 5.9 andy has said.
however that gear box was the only one i could find with the 3.5" piston. The 27-6528 out of the 82-88 j20 does have the right fittings, but the one i ordered only has the 3" piston. Im going to continue to try and order a couple more 27-6528 steering boxes and try and get one with the 3.5" bore... ill keep you guys up to date on what i find out.
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Unread 08-20-2013, 03:36 PM   #6
93zjer
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Any update on this? Looking for the REAl J20 with the 3.5" bore that will work for the 4.0 ZJ
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