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Old 10-05-2017, 07:17 PM
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gimpyrobb gimpyrobb is offline
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Default 4l80 shift kits

So I have a 6.5 diesel in my pickup. The 4l80 is on its last leg and I've got a new milsurplus one on the way. It was originally put behind the 6.5 in hmmwvs and comes with the torque converter. My question is, should I rip the new trans open to put a transgo kit in it? I've been doing some reading and think it would help longevity. Anyone have any experience?
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Old 10-06-2017, 06:39 PM
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cramd cramd is offline
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Quote:
Originally Posted by gimpyrobb View Post
So I have a 6.5 diesel in my pickup. The 4l80 is on its last leg and I've got a new milsurplus one on the way. It was originally put behind the 6.5 in hmmwvs and comes with the torque converter. My question is, should I rip the new trans open to put a transgo kit in it? I've been doing some reading and think it would help longevity. Anyone have any experience?
I don't have any experience with a transgo kit in a 4l80, but when the local (25 miles away) transmission shop put a new valve body in my Allison a year or two back, I asked about a Transgo JR. (2006 6 speed Ally), and the owner recommended installing one.
I have been quite satisfied with the way my trans shifts now; always disliked the way it would shift when going around a corner in town. The original valve body had a hanging valve, "fixed" under warranty, but gradually kept having problems with some shifts, such as when taking off from a stop sign at times.I had to give the engine a lot of throttle before the trans would seem to go into gear and start moving. It was not a consistent problem, but was annoying enough that I finally said piss on it and had a new valve body put in.
I was told that the transmission would also handle heavy towing better and last longer with the kit installed.
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  #3  
Old 10-09-2017, 07:42 PM
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Camaro Zach Camaro Zach is offline
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I have one in my truck. Shifts firm and crisp. Install was easy (although I didn't install the new springs in the pump that the kit comes with myself, had a shop do that after a later rebuild)

Lots of people have good luck installing them in junkyard 4l80e s and having them hold 6-700 hp.

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Old 10-11-2017, 04:46 AM
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Thanks guys. I hate to open up a new trans and work on it, but I think I will upgrade it.
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