How To: Transgo JR Shift Kit Install Allison 6 Speed

[jaredk]

Just got enough courage today to tackle this transgo kit. Not really as hard as I was thinking. Granted, I just finished removing the stock downpipe and installing a diamond eye which is as bad as they say it is All in all it took around 3-4 hours and if I had to do it again maybe like 1.5 hrs. I do have a big question for you guys though. While I was removing bolts from the valve body I noticed that two bolts were missing near the pink plug in all by itself. Is that normal or something I need to worry about? As far as I can tell it has never been worked on. I bought it from the original owner with 25k miles on it. Also... I know I should have been paying more attention, but I'm not sure I put in the accumulators and springs in correctly. I filled her back up and went through the relearn process. Everything feels smooth and no issues, but I could use a little reassurance by the experts here.

[Billly]

I'll be back

[jaredk]

here is a pic with missing bolts in yellow

[jaredk]

Anyone?

[Jd4230]

Originally Posted by jaredk

Anyone?

I know this is off topic, but I saw in your signature that you have the DE 4" quiet tone system with muffler and a DE downpipe. What was the sound level difference before and after, daily driving and towing? That's the combo I'm looking at because I want some more exhaust flow, but not much more noise. Thanks!

[Shov]

Originally Posted by Jd4230

I know this is off topic, but I saw in your signature that you have the DE 4" quiet tone system with muffler and a DE downpipe. What was the sound level difference before and after, daily driving and towing? That's the combo I'm looking at because I want some more exhaust flow, but not much more noise. Thanks!

Interested in the same question? Thanks ahead of time.


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[bamadiesel..WFO!!]

after the shift kit install it doesnt seem to shift any harder than it used to??? sometimes it even take to long imo in between shifts when im getting on it. How do you guys do? should it be alot harder shift? when getting into it should it be like a 350 turbo with firm and quick shifts?

maybe i should trans relearn again because i didnt go all the way through the process before i shut the truck off, or does that matter? instructions said to do 3-4 shifts at each stage from soft through full throttle and the do it all over again with tow haul on...

any input??

[jaredk]

bamadiesel..WFO!! - To tell you the truth, I don't really feel a diference in shifts either. If anything, it feels smoother and easier to move out of park into drive. I think this might just be from using transsynd fluid though. I also installed Robs efi live tuning at the same time as the exhaust, downpipe, egr plate and transgo jr kit so I wouldn't be able to single out a smooth shift being robs tuning or the transgo kit itself.

Jd4230 and Shov - I really like the 4" exhust w/ quiet tone and muffler. I had rob tune a rumble at idle and it sounds so much better. In the cab it is very quiet and no noticable drone in town or at freeway speeds (I haven't towed with it yet though). I got the exhaust and downpipe mostly for the decreased egt's while towing and better fuel economy (DPF delete).

P.S. Even with those mising bolts in the valve body things seem to be fine... just makes me nervous ya know.

[bamadiesel..WFO!!]

Would a trans relearn be done on highest hp setting?

[Kblaylock9244]

Subd for future reference. Does anyone know if this would be a bad idea to do to a high mileage trans? Ive heard horror stories about higher pressures on a high mileage trans.


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