I see a lot of people talking about rollerizing the 4L80E. As I understand it this simply means replacing thrust washers with torrington bearings. Anyone have guidance on how to do this perhaps with some part numbers? I'm concerned on the shimming aspect and whether or not machining is required. The trans builders seem to hold this info close, understandably.

I have my '99 4L80E all apart and would like to build it to reliably hold 700-800 rwhp. I'm going to go with Borg Warner hi-energy clutches and bands, Transgo shift kit, 300M input shaft, and new soft parts throughout. It's 100% street daily driven, will never see the track, never tow.

Also anyone have thoughts on 5 or 6 clutches for the direct? The 5 steels would be 0.09" thick and the 6 steels would be 0.06" thick Kolene units. Those seems awfully thin. With the Transgo kit the direct clutch will be dual fed as I understand it.

Thanks!

 

Anyone?

 

Seems like nobody wants to share any knowledge so you'll buy theirs I have also been doing a ton of research because I am a do it myself kind if guy and I have a few questions of my own nobody wants to answer

 

Yes that what it seems. But I know people have done this themselves so I'm waiting for them to chime in. From PATC and CK Performance you can buy billet forward clutch hub with roller bearings. I'm planning on calling them today.

I'm also curious how to rollerize the output shaft. I spoke with one trans builder and he does not recommend rollerizing because the rollers in the bearings create "high spots" where the force is applied, whereas the plastic thrust washers conform to the surfaces. He also said the plastic washers rarely break unless something else is wrong. But most other trans builders seem to rollerize.

 

Well the kit I purchased from patc includes Torrington bearings so I'm guessing that's why I don't see washers and such and I guess I'll have a rollerized trans my question now is.... Where so I put them lol

 

If you're rebuilding the trans, then dual feed the directs the right way. I'll try and dig up the thread that shows you how.

 

You may have already seen these, but it's what I came up with after a quick search. I was trying to find Corey's thread. There's all kinds of good info in there...

Some rollerizing info in here: https://www.performancetrucks.net/fo...-4l80e-493357/

This one covers the dual feed: https://www.performancetrucks.net/fo...ebuild-495376/

Clutch clearance discussion: https://www.performancetrucks.net/fo...setups-492837/

 

https://www.performancetrucks.net/fo...t-drum-506779/

 

Thanks for the links. I've read them all except the dual feed one. I have an HD-2 kit I was going to use but now I'm second guessing.