SHIFT KIT - Ford Powerstroke Diesel Forum
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post #1 of 18 Old 07-03-2008, 10:31 PM Thread Starter
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SHIFT KIT

Just wondering who's used what shift kits and which ones they suggest. Shopping for one for my 2003 7.3.
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post #2 of 18 Old 07-03-2008, 10:36 PM
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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.
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post #3 of 18 Old 07-04-2008, 01:02 AM
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I Did the John Woods valve body , SWEET.

Sold 01 350 6" on 37's and mild mods, 00 X 4" on 35's, 02 f350 4" 35's modded from fan to drive shaft, ridin the 03 with nose conversion with 125k and counting upwards slowly.
Never had CNC's poo on any of it, never will.
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post #4 of 18 Old 07-04-2008, 07:09 AM
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BTS or John Woods VB 's are the best way to go!
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post #5 of 18 Old 07-04-2008, 07:14 AM
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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!

Shane

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post #6 of 18 Old 07-04-2008, 07:20 AM
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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!!!

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post #7 of 18 Old 07-04-2008, 07:56 AM
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transgo for me too

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post #8 of 18 Old 07-05-2008, 09:04 AM
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I would skip the shift kit and go with a completely tuned VB. I have the FTVB from gregg evans and love it!!


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post #9 of 18 Old 07-05-2008, 09:30 AM
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Quote:
Originally Posted by NCHornet View Post
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.

Shane

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post #10 of 18 Old 07-05-2008, 03:05 PM Thread Starter
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Quote:
Originally Posted by sea71 View Post
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.
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