tgui

Like the title says my 4l80e core I found to have a single broken case lug. This was a GM rebuild from a working truck (just before the accident). I found no chunk of metal, fluid was good and so were clutches. 30k miles on rebuild. I assume the donor truck was running with this case lug missing. Strange. Just to note I'm building this trans to hold a max of about 500ftlbs in a turbo 5.3 inside a 2002 Yukon... just because. Its not my daily driver but will be using it quite a bunch in the future.

- Is the case safe to use?

- Should I use a beefy snap ring like the one found in the transgo kit?

- Would something like a Rossler snap ring stabilizer fit my 4l80e and not interfere with the intermediate band? I know its made for a TH400, but they're closed for the Holidays and can't get a response for a while. Coan and Kilgore have similar products for the TH400 as well.

(for future thread finders, Jake's has a case saver/snap ring support as well)

Thanks in advance!

My Case:


Rossler snap ring stabilizer for TH400:


Coan: http://www.coanracing.com/Catalog.asp?ProductDetail=124


Kilgore: http://www.kilgoretrans.com/html/new_stuff.html (called and awaiting response)

Jake's Performance

iTrader: (2)

The snap ring support (we have them) is not going to work with a front band.

We use a HD snap ring at that location. It looks like someone got rough taking the transmission apart. I would use a HD snap ring and go on.

tgui

Thanks for helping out a hack. I'll just button her up once some new parts arrive.

Additionally, would rotating a HD snap ring 180 degrees with the gap in ring burried in the case lugs as opposed to more free floating help strengthen things up in light of the missing lug?

Jake's Performance

iTrader: (2)

Yes,
position it at the 3 o clock position.

tgui

Got it.

I appreciate the help from a trans/internet celeb!