SHIFT KIT

[f250power]

Just wondering who's used what shift kits and which ones they suggest. Shopping for one for my 2003 7.3.

[daboostcreep]

i have a Factory Tech Transmission Valve body which comes competely assembled and brand new in the box for about $225. It makes shifts crisp and I highly recommend it.

[scagle1]

I Did the John Woods valve body , SWEET.

[caryt]

BTS or John Woods VB 's are the best way to go!

[sea71]

I personally like the Transgo tugger hd II kit, because it not only reworks the valve bodies, but ALSO the front pump. Why rework the valve bodies and not do anything on the front pump side to increase your pressures? I absolutely love the way the tranny performs in stock mode with the Tugger kit. Then if you do power mods, your tranny has the line pressures to handle them. Very highly regarded by lots of 7.3 owners that work their trucks day in and day out. Lots of people avoid this kit simply because the tranny has to come out to do the front pump. Simple vavle body kits require no removal. Good Luck!

[fordmike1]

I have the transgo tugger kit in mine and I get very firm and solid everytime wheather I am loaded or not and then once my billet dual disc converter locks up it hits very firm again. I love it!!!

[95dieselsmoke]

transgo for me too

[NCHornet]

I would skip the shift kit and go with a completely tuned VB. I have the FTVB from gregg evans and love it!!


NCH

[sea71]

Originally Posted by NCHornet

I would skip the shift kit and go with a completely tuned VB. I have the FTVB from gregg evans and love it!!


NCH

It is my understanding that any modified valve body, irregardless of maker, manufacturer, or tuner uses different series of springs in each valve to change apply pressures in that given part of the valve body, along with replacing and removing the little "balls" in the valve body to reroute fluid to accomplish the same goal- more apply pressure at the time of the shift. Now if you do this valve body work to increase the apply pressures, arent you asking more from your front pump than it is designed to do in stock form? The front pump is only going to pump what its capable of in stock form, so when you "ask more of it" by modifying your valve bodies, then its only a matter of time before the front pump cant keep up with the new demands imposed on it. Again, this is the way I have understood the relationship between the front pump and valve bodies. Please correct me if I am wrong.

[f250power]

Originally Posted by sea71

It is my understanding that any modified valve body, irregardless of maker, manufacturer, or tuner uses different series of springs in each valve to change apply pressures in that given part of the valve body, along with replacing and removing the little "balls" in the valve body to reroute fluid to accomplish the same goal- more apply pressure at the time of the shift. Now if you do this valve body work to increase the apply pressures, arent you asking more from your front pump than it is designed to do in stock form? The front pump is only going to pump what its capable of in stock form, so when you "ask more of it" by modifying your valve bodies, then its only a matter of time before the front pump cant keep up with the new demands imposed on it. Again, this is the way I have understood the relationship between the front pump and valve bodies. Please correct me if I am wrong.

I imagine there's a way to prevent this. You could probably re-route the fluid in a manner to provide higher volume to the valves without over working the pump, the question is nwhere are you re-routing that fluid from. It could be from a lubricating passage or something of that manner which could cause damage over time. I guess you'd have to ask the builder exactly how he's is providing that additional pressure.