4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

J-mod

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Old Oct 18, 2008 | 12:45 PM
  #11  
99 GT vert's Avatar
99 GT vert
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From: Northwest Ohio (Fort Wayne Area)
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i bought mine from the same place that defcon posted


no you can not use it with a shift kit

tranny cooler is not installed yet but from the instructions it looks really to install
not real sure what brand just some cheaper one
Old Oct 18, 2008 | 07:07 PM
  #12  
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j-mod & shift kit are not exactly the same thing . I have done both to my VB per Jerry's specifications . here is everything you need to know ...
http://www.tccoa.com/articles/tranny/index.html
Old Oct 19, 2008 | 03:29 AM
  #13  
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2000AZ5.0GT
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I was going to say, I thought the Jmod was a full valvebody, whereas the shift kit was just modified parts of a valvebody?

either way, just put in a damn manual valvebody, and never let anyone drive your car.
Old Oct 19, 2008 | 02:36 PM
  #14  
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j-mod is just enlarging holes in the seperator plate . shift kits come w/ different springs , accumulators , servos & solenoids depending on application .
Old Oct 19, 2008 | 02:53 PM
  #15  
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so what would u guys suggest for me to do... torque converter? shift kit? trans cooler? i want to do all three eventually if you could throw out some brands and more info it would be greatly appreciated.

-Patrick
Old Oct 19, 2008 | 03:08 PM
  #16  
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blstoff
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1st thing you should do is get a cooler . I have this one ...
http://store.summitracing.com/partde...5&autoview=sku , but you dont need one w/ a fan . go to summitracing & find a B&M trans cooler kit . the kits come w/ all hardware you need to install . after that , do the j-mod , shift kit & get a TC . change fluid every 20k . mounting instructions are on the link in my earlier post . mount behind front bumper . and you will want to get a new tune , especially after the TC .

Last edited by blstoff; Oct 19, 2008 at 03:12 PM.
Old Oct 20, 2008 | 05:14 AM
  #17  
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03FstStngKB
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J-mod relies more on decreasing the time(enlarging holes in the orifices of the valvebody) it takes for the fluid to move around in your valvebody resulting in quicker and firmer shifts...w/no pressure increases, I do believe?

Shift Kits achieve a firmer shift at the cost of increasing global line pressure, amongst other things like taking out or adding spacers, springs, etc..to achieve the same results. It has been said that doing it the j-mod way is safer for long term reliability vs the shift kits that mess just soley w/the pressure...but many report no problems using either method to gain a firmer and quicker shift.
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