Tranny shift kits
Logistics Pro
Joined: Jul 2002
Posts: 4,821
Likes: 19
From: South Dakota
I'd reccomend a tuner way before a shift kit on any NA gas truck. On turbo diesels and SC gas trucks, well that's a different story that often requires some type of valve body work and a tuner.
Senior User
Joined: Jan 2006
Posts: 113
Likes: 0
From: Seattle, Wa
I have heard some good things about Factory Tech valve bodies. There is another company named BTS (I think) that is suppose to make some good valve bodies too. Not sure if you want just the kit, or a moded valve body?
Shawn
Shawn
Last edited by Shawn1024; Mar 7, 2006 at 10:55 AM.
Logistics Pro
Joined: Jul 2002
Posts: 4,821
Likes: 19
From: South Dakota
The Factory tech valve bodys (based off of the 4r70W) probably won't work on the newer trannys that these trucks have (4r70E), but I'm speaking with about %70 certainty. The 4r70E has a lot of upgrades compared to the 4r70w.
Since KFX has a Roush SC, a tuner won't work right out of the box with out custom programming, so that option is out.
BTS makes great modded up whole trannys, but they really deal more in the diesel market, and not so much with the 4r70E trannys. I'm sure that they have a few things but, I'd be leary about them.
I think that your best best is to contact Roush, and see what you need to do if you want a tuner, or a shift kit.
I found this thread in the Tuners Fourm.
https://www.ford-trucks.com/forums/s...d.php?t=467978
Since KFX has a Roush SC, a tuner won't work right out of the box with out custom programming, so that option is out.
BTS makes great modded up whole trannys, but they really deal more in the diesel market, and not so much with the 4r70E trannys. I'm sure that they have a few things but, I'd be leary about them.
I think that your best best is to contact Roush, and see what you need to do if you want a tuner, or a shift kit.
I found this thread in the Tuners Fourm.
https://www.ford-trucks.com/forums/s...d.php?t=467978
Last edited by superrangerman2002; Mar 7, 2006 at 04:02 PM.
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Laughing Gas
Joined: Jan 2005
Posts: 1,055
Likes: 3
From: Magnolia, TX
Guys,
Keep in mind that even if you get a tuner there will be mechanical limitations to how quickly your tranny will be able to shift due to valves and springs in the valve body.
You will not get the full benefit from a tuner unless you get a shift kit in the tranny first. Will you get some benefit with a tuner? Sure. But you'll get a significantly better shift pattern if you get the shift kit first, then the tuner.
FYI . . .
CMOS
Keep in mind that even if you get a tuner there will be mechanical limitations to how quickly your tranny will be able to shift due to valves and springs in the valve body.
You will not get the full benefit from a tuner unless you get a shift kit in the tranny first. Will you get some benefit with a tuner? Sure. But you'll get a significantly better shift pattern if you get the shift kit first, then the tuner.
FYI . . .
CMOS
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Freshman User
Joined: Nov 2005
Posts: 27
Likes: 0
Transgo has been making great shift kits for years. I have one in my 97 E4OD and on some selieniod packs you can trun up the line presure as well.
Thats what I did and the tranny shifts just great and I have no tunner at all.
Led Zep.
Thats what I did and the tranny shifts just great and I have no tunner at all.
Led Zep.
Last edited by LED ZEP; Mar 7, 2006 at 10:25 PM.
Logistics Pro
Joined: Jul 2002
Posts: 4,821
Likes: 19
From: South Dakota
Most tuner mfg'ers do not reccomend the use of the tuner and a shift kit. What often happens is that the combination will starve the pump for short periods of time till it burns out.
A tuner does the same thing that the transgo does, it just turns up the line pressure.
A tuner does the same thing that the transgo does, it just turns up the line pressure.
