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Re: [GMCnet] shift kit pro's and cons [message #317794 is a reply to message #317762]

Fri, 19 May 2017 09:51

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma:

Senior Member

I've rebuilt many T400s, and a few T425s. As others have said. A very durable transmission. As an example. I just changed the trans in Barb's 73 GMC. That trans had never had any repairs made to it by the service records. And the extreme amount of grim built up on it. 220,000 mile, and pulling a toad. The key was timely fluid, and filter changes. Thus getting the junk out at each change. ( As a note. It never had synthetic put in it. ) So how could synthetics do better? GM's shift programming is excellent for our application. I've put shift kits in some of my trans at rebuild time. But to me. Our GMC's aren't the place to install one. Want mileage out of your T425. Let up a little at it's shift times. Change fluid, and filter at every 25,000 miles. Synthetic or not. I'm always pulling something. Much of the time my 403 is pulling up to 21,000 lbs GVW. And I have the 3:70 FD. Bob Dunahugh
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[Message index]

		shift kit pro's and cons By: joewilly on Thu, 18 May 2017 08:58
		Re: shift kit pro's and cons By: Matt Colie on Thu, 18 May 2017 10:00
		Re: shift kit pro's and cons By: A Hamilto on Thu, 18 May 2017 10:40
		Re: shift kit pro's and cons By: roy1 on Thu, 18 May 2017 11:07
		Re: [GMCnet] shift kit pro's and cons By: Keith V on Thu, 18 May 2017 12:48
		Re: [GMCnet] shift kit pro's and cons By: sgltrac on Thu, 18 May 2017 15:10
		Re: [GMCnet] shift kit pro's and cons By: BobDunahugh on Fri, 19 May 2017 09:51
		Re: [GMCnet] shift kit pro's and cons By: joewilly on Fri, 19 May 2017 10:46
		Re: [GMCnet] shift kit pro's and cons By: Kingsley Coach on Fri, 19 May 2017 18:26
		Re: [GMCnet] shift kit pro's and cons By: powerjon on Fri, 19 May 2017 18:31
		Re: shift kit pro's and cons By: JohnL455 on Fri, 19 May 2017 07:50
		Re: [GMCnet] shift kit pro's and cons By: Keith V on Fri, 19 May 2017 08:37
		Re: shift kit pro's and cons By: Russell K. on Fri, 19 May 2017 07:58
		Re: shift kit pro's and cons By: JohnL455 on Fri, 19 May 2017 08:25
		Re: shift kit pro's and cons By: Chris Tyler on Sat, 20 May 2017 14:28

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