4L80E Rebuild Quick Overview for First Time Builders! You can do this!

This is a quick overview of a 4L80E transmission rebuild. I skip a lot of the details and just show the basic steps so you can see what the process looks like and decide if you want to give it a try.
#chevy #squarebody #bigblockchevy #4l80e #transmission

[@joelrugg]

Transmission bench is the goat

[@ThomasHegland]

Great Video - Thanks for taking the time to make it. I might give this a go!!

[@vikingmech]

@ThomasHegland No problem, thanks for watching and good luck on your build!

[@talljake]

Exactly the sort of video I was after; not a 3h step by step, but a quick oversight of if its within my wheelhouse!

[@vikingmech]

@talljake Yep that was the idea. Hope you found it useful. Thanks for watching!

[@talljake]

Yessir, basically looks like a th400 rebuild with a few extra fiddly bits!

[@WesternlandscapeOutdoors]

Watched the whole thing this will be helpful!!! Yes do a pump video if you already haven’t 🎉

[@vikingmech]

Thanks! The pump rebuild video is on my channel here: kzbin.info/www/bejne/rZqzcpKFhJl5lc0

[@timdontwannasay5889]

I chickened out at tightening the hollow bolt! I'm freaked out about breaking it!

[@TheSargeK5]

Great video, exactly the level of detail I was looking for, ATSG ordered, I’m ready to dive in, thank you!

[@vikingmech]

@TheSargeK5 Glad to hear it! Thanks for the feedback and good luck on your build!

[@Suds.]

That's a very helpful video. Thank you for taking the time to put this together for us out here that are hesitant about tackling a 4L80E rebuild. I would be interested in watching the pump rebuild if you find time to edit that video.

[@vikingmech]

@Suds. Thanks and glad you found it helpful. The pump rebuild video is on my channel here: kzbin.info/www/bejne/rZqzcpKFhJl5lc0

[@cameracamera1319]

Thanks. You should add 4l80e for dummies to title. Thanks again

[@vikingmech]

@cameracamera1319 I just figured it would be helpful for beginners to see the basics and get an idea what it takes. Thanks for watching and commenting!

[@MrFlippingHappy]

Very good thank you

[@RobinLovins]

Good video I watched all of it you paid close attention and very good at explaining.

[@vikingmech]

@RobinLovins Thanks! Hope it was helpful for you.

[@slingingsteel9744]

Great video! That’s the only part of a vehicle I’ve never have rebuilt is an automatic transmission. I’ve always said maybe one day I will give it a try. I was initially was going to run a 4L80 in my truck but I’ve pretty much have decided to go with a manual transmission. I’m more of a manual type guy but who knows I may decide one day to go back to an automatic.

[@vikingmech]

@slingingsteel9744 I was the same way and I think a lot of other people have always wanted to rebuild a transmission too, but just thought it was too complicated. Hopefully everyone can see here that its not impossible. I love driving a manual too.

[@davenevarez4738]

Yes we would like the rebuild of the pump

[@vikingmech]

@davenevarez4738 Ok I will get that underway. Thanks for the feedback!

[@RANDOMNATION907]

@@vikingmech I would appreciate that as well.

[@aubreyroche5080]

OH Hell,......I've been inspired....

[@vikingmech]

@aubreyroche5080 Hahaa! Thats cool man. I wasn't sure anyone would even watch this video!

[@ronhipps8273]

Good vid!

[@83SquareK20]

This is awesome man. Thank you!

[@vikingmech]

@83SquareK20 No prob man, thanks for the feedback! Let me know if there's any part I should do a more detailed video on. Thanks for watching and commenting!

[@RANDOMNATION907]

Extremely Helpful , Thank You Very Much.

[@vikingmech]

@RANDOMNATION907 You're welcome...and thanks for the feedback!

[@papergatorzfedducca7998]

New subscriber!!🔥🔥🔥🔥

[@vikingmech]

Thanks man!

[@Lonestarluck900]

Nice work!

[@toddsculley2710]

Great job

[@vikingmech]

@toddsculley2710 Thanks!

[@SharifSalukis]

Thanks! Great video. I have a partially assemble 4L80E in my garage. I got sick and ended up in Hospital. Seeing your video has inspired me to go back to my project.

[@vikingmech]

@SharifSalukis Wow, thats a great compliment. Thank you! Get well soon and get that project done brother!

[@SharifSalukis]

@@vikingmech Thank You!

[@hybridmusclegarage4590]

Cool Man!!

[@kevinboutwell2243]

I just did my first 4l80. When the intermediate shaft goes into the sun gear the lube oil holes have to line up. There’s about a 1 in 50 or so chance these hole will line up if you put the gear in first and then drop in the intermediate shaft. You have to put the 2 together and shine a light in the end to verify alignment. During assembly I noticed its very easy to pull this shaft up and mess up the alignment if a component is pulled back up. The shaft can easily be one spline off.

[@vikingmech]

@kevinboutwell2243 Where did you find that info? Not saying its wrong but I didn't see any mention of that in the ATSG manual or the video classroom series I followed. Would be nice to know if I need to tear my trans all back apart again for that or not. Thanks!

[@kevinboutwell2243]

Good question. I just looked in the ATSG book and can’t find anything about it. I had a friend show me that a while back thats done lots of 4l80s along with the bevel going down. I’ve also seen a couple rebuild videos of others that do it all the time and they line them up. I did it because monkey see monkey do principle. I just looked at a spare sun gear and intermediate shaft and the area where the hole lines up with a internal grove in the intermediate shaft. That hole has to be getting oil even when the holes aren’t lined up. My friend is out of the country right now so I can’t ask him. My gut feeling after looking is it doesn’t matter. The only thing i can say is the 2 holes lined up directly might spray oil better? If my buddy ever gets back in town I’ll ask him.

[@kevinboutwell2243]

kzbin.info/www/bejne/iGitc2uApsicnJIsi=Z4Uc-47GSOuympUA Start watching this video at minute 18. Like you said, the book doesn’t say it and there’s a groove in the intermediate shaft. I’m not sure but mine is definitely lined up.

[@vikingmech]

@@kevinboutwell2243 I did find an answer here (post #105) that says indexing the oil holes is not necessary. A few other random forum posts seem to agree, so I'm thinking its not necessary, hence no mention of it in the book or videos. bobistheoilguy.com/forums/threads/4l80e-rebuild-on-a-suburban.284668/page-6

[@vikingmech]

@@kevinboutwell2243 Yeah I found that same video with a search, and saw him line up the holes. I think this must be similar to lifters in an engine. They have oiling holes but they don't line up with the oil feed holes in the block and they're in a groove which would be entirely pressurized. So the orientation of the holes doesn't really matter. Thanks for commenting though. Always good for myself and anyone else watching to learn about this stuff!

[@maryalston3080]

In the video he show you the Word what year goes with what trans as far as the over drive hub

[@timdontwannasay5889]

Pump video please!

[@vikingmech]

@timdontwannasay5889 The pump video is on my channel here: kzbin.info/www/bejne/rZqzcpKFhJl5lc0

[@dennisalstonZ06]

The reason why you overdrive planetarium is different because you're working with our earlier 4L80E trans he shows you that on the video I think you're working on a 91 to 01 4L80E trans look at the tag on the passenger side of the trans

[@vikingmech]

@dennisalstonZ06 The one I'm rebuilding in this video is a 1998.

[@dennisalstonZ06]

The he's working on in the video is a later model.

[@vikingmech]

@@dennisalstonZ06 Yes the guy in the instructional video mentions his is a 2003 model. That would explain the smaller blue roller sprag in the overdrive drum.

[@papergatorzfedducca7998]

What manual did you use to let you know what thickness, air checks etc?

[@vikingmech]

@papergatorzfedducca7998 At the end of the video I show the resources I used. The ATSG manual has most of the info you'd need to know, but the video course from transmissionbench.com shows how to do the air checks etc.

[@papergatorzfedducca7998]

@@vikingmech ok thank you and I love the video. I still have a few minutes left to finish it.

[@vikingmech]

@@papergatorzfedducca7998 Awesome thank you for the feedback. That really helps me figure out what kind of videos people like to see.

[@papergatorzfedducca7998]

@@vikingmech So basically as a beginner it’s best to assemble one part at a time? And when possible can do another one or a 4l60e😂😂😂

[@vikingmech]

@@papergatorzfedducca7998 Yep one part at at time and in the right order. I highly recommend that video course. They show how to do each step. There are a lot of details I didn't show in my video but if you just follow their directions step by step, its not hard.