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Old 07-03-2017, 12:25 AM   #1
1972K20
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Re: 4L80E & TH400 Tech.

Why use 3rd party hosting when photos can be uploaded to this site directly?
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Old 07-03-2017, 11:58 AM   #2
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Re: 4L80E & TH400 Tech.

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Originally Posted by 1972K20 View Post
Why use 3rd party hosting when photos can be uploaded to this site directly?
This site's photo hosting is atrocious, the photos are downsampled to low-res.

Too bad, because this thread is great. I'll see if I can find an archived copy on the internets to save as a pdf. It looks like the photos are still on photobucket but embedded img tags are blocked... I already didn't like photobucket but this is ridiculous. imgur.com is free, fast, and has none of that nonsense fwiw.
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Old 03-23-2018, 08:14 PM   #3
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Re: 4L80E & TH400 Tech.

Okay guys, quick question. I've got a 4l80e in my 03 2500hd, the converter locks fine around town, until you're on the highway and then it will unlock after about 73mph. I read somewhere that the pcm sends a ground signal to the tcc solenoid. Is this correct?
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Old 02-18-2019, 08:40 PM   #4
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Re: 4L80E & TH400 Tech.

Anyone know where clinebarger went?
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Old 02-19-2019, 12:21 AM   #5
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Re: 4L80E & TH400 Tech.

His thread was very helpful glad I was able to get answers to my questions before he left. Ill leave the transmissions to pro next time took to many hours to figure everything out ill just take it to a shop. Problem is not too many shops here do mods mostly just stock rebuilds.

Looks like he stopped posting here back in 2017.
I saw a post from him on other forums seems to still be around not here.

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Old 06-09-2019, 07:07 PM   #6
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Re: 4L80E & TH400 Tech.

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Originally Posted by kell490 View Post
His thread was very helpful glad I was able to get answers to my questions before he left. Ill leave the transmissions to pro next time took to many hours to figure everything out ill just take it to a shop. Problem is not too many shops here do mods mostly just stock rebuilds.

Looks like he stopped posting here back in 2017.
I saw a post from him on other forums seems to still be around not here.
hey KELL490 do you remember what forum(s) you saw CLINEBARGER on and what name he was using? I could use some good technical info from him. thank you in advance.
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Old 06-09-2019, 07:19 PM   #7
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Re: 4L80E & TH400 Tech.

He is on LS1 Tech going by same name. Last time I was there anyway.
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Old 06-09-2019, 08:21 PM   #8
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Re: 4L80E & TH400 Tech.

I just google searched his name. If you go to this forum yellowbullet there is a guy named Hutch he is an expert on transmission builds has a sub-forum there. You probably search / post over there find out lot of good information also if you can't find Clinebarger.

https://www.yellowbullet.com/forum/f...splay.php?f=30

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Old 06-09-2019, 10:32 PM   #9
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Re: 4L80E & TH400 Tech.

Quote:
Originally Posted by Dustytrix View Post
He is on LS1 Tech going by same name. Last time I was there anyway.
Thank you dustytrix I appreciate your help 👍🏻

Quote:
Originally Posted by kell490 View Post
I just google searched his name. If you go to this forum yellowbullet there is a guy named Hutch he is an expert on transmission builds has a sub-forum there. You probably search / post over there find out lot of good information also if you can't find Clinebarger.

https://www.yellowbullet.com/forum/f...splay.php?f=30
Thank you kell490 good looking out on the knowledge, I'm always trying to learn more lol

Thats what I like about this forum, most people are genuine and willing to help each other.
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Old 10-08-2023, 11:02 AM   #10
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Re: 4L80E & TH400 Tech.

Is clinebarger still active here?

Did a 4l80 in my 73 and the tailshaft won't stop leaking 2 bushings 3 seals and all I've made it do is leak worse.
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Old 10-09-2023, 02:08 PM   #11
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Re: 4L80E & TH400 Tech.

Good thread, thanks for posting.
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Old 10-10-2023, 08:31 AM   #12
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Re: 4L80E & TH400 Tech.

Google 4l80e rear seal and bushing issues. I believe there were two different bushings used over the years. Something like 40 or 50 thousands difference on the inside diameter.
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Old 10-09-2023, 02:26 PM   #13
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Re: 4L80E & TH400 Tech.

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Originally Posted by KQQL IT View Post
Is clinebarger still active here?

Did a 4l80 in my 73 and the tailshaft won't stop leaking 2 bushings 3 seals and all I've made it do is leak worse.
It looks like your driveshaft may be too long. The slip yoke should not go all the way into the tailshaft on the transmission. It should stick out about 3/4 to 1 inch.
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Old 10-10-2023, 08:32 AM   #14
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Re: 4L80E & TH400 Tech.

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Originally Posted by 70STOVEBOLT View Post
It looks like your driveshaft may be too long. The slip yoke should not go all the way into the tailshaft on the transmission. It should stick out about 3/4 to 1 inch.


It's out about 1-1/8
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Old 10-10-2023, 08:49 AM   #15
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Re: 4L80E & TH400 Tech.

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It's out about 1-1/8
Ah, ok. The one pic showed the yoke all the way in.
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Old 10-10-2023, 09:14 AM   #16
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Re: 4L80E & TH400 Tech.

a pic from the mockup. The yoke is long almost twice that of my 400 yoke I replaced
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