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4l80e rebuild for 2002 Yukon Swap, SLOWWWWW BUILD....

Old 12-20-2014, 07:42 PM
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Holy huge pics! Nice work. What rebuild parts are you going with?
Old 12-20-2014, 11:51 PM
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Originally Posted by mdwatts11
Holy huge pics! Nice work. What rebuild parts are you going with?
Sorry, its how the pics come off my phone. Other forums resize and click to enlarge. I don't know why this forum doesn't. Is there a better way to post pics?

I am TOTALLY open to suggestions on parts. I'm shooting for a max of 600FtLbs (more like 500) since I'm going LS6 CAM and smallish turbo for early peak torque on my 5.3, but was thinking...

- Pretty much stock frictions and steels where needed. I keep hearing conflicting reviews on really aggressive frictions and steels holding heat too much. I'd love input here.

- Sonnax sure cure with that stupid expensive tool kit to drill things out.

- Transgo hd2 shift kit.

- Drill out the pump oil hole a bit.

- Sonnax fancy plastic check *****, wiring harness, 4x4 output shaft and misc I'll post when they arrive.

Should I do bearings? Should I just replace all frictions and steels?
Old 12-20-2014, 11:55 PM
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Originally Posted by Atomic
Forwards look a little rough....intermediates and directs look ok.
What makes you think that (serious, I'm learning)?

Here is a better pic. The material is a diff color than all the other frictions I found in the trans. And of course I appreciate the help!

4l80e rebuild for 2002 Yukon Swap, SLOWWWWW BUILD....-xunno1a.jpg
Old 12-22-2014, 02:24 PM
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I resized pics to a more reasonable size. Sorry for the retarded huge images.
Old 12-28-2014, 09:47 PM
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Default Internal case damage

Uhhhh.... just noticed this bit chipped off inside. I found no such chunk when pulling apart. I assume the GM rebuild ran fine like this.

Do I have anything to worry about? I hope to god I don't need a new case...

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Old 12-28-2014, 10:09 PM
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Not my case. Yup, missing something. Will my snap ring be ok without that bit of support?

4l80e rebuild for 2002 Yukon Swap, SLOWWWWW BUILD....-jktczt7.png

Last edited by tgui; 12-28-2014 at 10:32 PM.
Old 12-31-2014, 12:16 PM
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I don't see that one broken tongue being a problem. When you put the snap-ring back in clock it so its gap is centered between the two supported ring slots.
Old 12-31-2014, 02:11 PM
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Originally Posted by James B.
I don't see that one broken tongue being a problem. When you put the snap-ring back in clock it so its gap is centered between the two supported ring slots.
Thanks. I was thinking and hoping someone would say that. I've identified the HD snap ring from the transgo kit on WIT Trans for about $3.00. I'll slap that in to make things tougher On the cheap build after all.
Old 01-01-2015, 09:29 PM
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Dust cover for $19.00
4l80e rebuild for 2002 Yukon Swap, SLOWWWWW BUILD....-vav3yds.jpg

4l80e rebuild for 2002 Yukon Swap, SLOWWWWW BUILD....-c7w1u5u.jpg
Old 01-02-2015, 12:01 PM
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I got a good deal. $300 total for a Sonnax Sure Cure and the tool kit. Some guy on ebay had both sitting around, never used since he decided to just buy a new trans rather than rebuild his broken one.

The toolkit is $300 by itself, so I done good I think.

Also since I'm tearing everything apart I'm not going to get a Transgo HD2 kit. I'll more cheaply do the internal dual feed mod (free)

4l80e rebuild for 2002 Yukon Swap, SLOWWWWW BUILD....-obr3jjz.png

4l80e rebuild for 2002 Yukon Swap, SLOWWWWW BUILD....-t0re3xb.png

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