TH350 Transmission Rebuild Part 1
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- čas přidán 11. 12. 2023
- Learn how to rebuild a high performance TH350 (commonly called a Turbo 350) automatic transmission. In this video I will show you how to tear down and inspect this highly popular and highly capable transmission for use in your muscle car, hot rod, or even your custom Offroad truck.
In another video I will show you how to rebuild and modify the valve body for this transmission and even how to rebuild it to reliably handle some pretty high horse power.
Check out my website to see the brands I choose to support!
WarPaintoffroad.com
***Disclaimer*** This video is just meant to show how I do it. Injury may occur by trying to replicate what is in this video. Attempt at your own risk, with proper training and equipment. - Auta a dopravní prostředky
Great video! I’ve been needing to rebuild my th350 for a while now..I don’t have to money to pay someone to do it, and I haven’t found a video as thorough as yours. I’m actually excited to tackle this project now. Can’t wait to watch the rest of them before I start.
Thanks for the support! It’s not too difficult. Just take your time. Have fun with it!
Lots to remember when putting back together. Good info.
Excellent vid man!
Thanks!
Thanks good job from iran
Awesome instructions Dan, thanks for your excellent knowledge!!🙌🙌🙌
Thanks for the support! Hopefully this helps people. These transmissions are super popular. And really pretty simple as far as automatics go. Definitely worth doing yourself.
You got a new subscriber brother!!! Great details!!! 🔥🔥🔥🔥🔥🔥
Thanks for the support!
I know mainly for your shit posting on IG and that’s pretty funny but this was actually really informative and entertaining
Thanks for the support! Instagram is just a way to promote the CZcams and have fun. Showing how to build stuff is my passion.
And a thumbs up!! 👍🏿
Hi my name is Andrey this is my first time I'm watching a transmission tear down in depth I have a few questions
1. With friction clutches or any of the disk and drums does it matter what way you drop them in (if lets say all tabs are the same?) If turned slightly
2. The valve body is it the gasket that you drill holes into to make it shift smoother or harsher?
3. What exactly gets changed to beef up the strength of the transmission (let's say raise the torque rating to handle 200 more torque?)
Hey there! So to answer your questions…if all tabs are the same…the. It doesn’t matter. But many parts inside this trans will only fit one way.
For the valve body…it would be the gasket and the plate. But it’s very easy to mess up. Which is why I usually go to a kit from someone like Transgo that has already done it for you and you know it will be right. They aren’t expensive.
And for beefing up the trans, it used to be easier because the th350 was much more available. But it’s getting harder to find parts. Anything g has a breaking point. Tbh, just upgrading the clutches, getting a good torque converter, and making sure it doesn’t run hot…it will handle some pretty good power. The th400 is strong we though. Has a larger output shaft that can handle more abuse. So it’s hard to say exactly what it will handle. Because lots of power driven nicely in the street is very different than lots of power driven on a sticky drag strip with hot slicks.
Hey thank you so much for replying i loved the video ill watch the other parts of this mini series thank you and good luck @WarPaintOffroad
trying to see front end of it in your video but, up around the front of this transmission behind where the front seal goes, around the shaft, should there be a notch in it? Your seal is intact in this one so i cant tell but, i can post a picture of it if need but my trans has a notch in the area they call a pump? its about the width of a finger but my trans was leaking from that front seal, took it all apart and the sleeve around the shaft there was cut and bent just where this notch in the pump itself is missing.
I’ll have to look. I think I know what you are describing. Let me look when I get home. You can always go to my website and use my email there to send a photo.
@@WarPaintOffroad I did some more research, as well as broke the transmission down, but this notch I was mentioning is indeed intentional, looks like some kind of blowout channel for the transmission fluid but, the reason mine was leaking was the bushing just there around the shaft. Right where that channel sits happened to be where the bushing itself was pressed together, the bushing was blown halfway apart at the seam with the point torn so far inward it was nearly poking the shaft. Being behind the front pump seal whatever blew my bushing out should've been selfcontained but aside from a few metal shards there was nothing that could've ripped through the bushing within it. It almost looks like the channel opening up over the bushing somehow became overpressurized and just blew enough fluid hard enough to rip apart my bushing. The seal itself was still in great shape too, undamaged though there are a few scratches and gouges more with the bushing..
Your videos been super helpful though, I never would've gotten my front pump out of the transmission without seeing where to pry it. That said I've caught hell trying to order a replacement bushing to install on it. None of the hardware stores have it in stock and half of them don't even have the info on it in their systems. Had to knock it out with a screwdriver myself and even with the part number off the bushing, Clevite 01588, i still had to order from amazon myself to get it.
My question is though, is that even feasible? Could the little tranny fluid channel in the front plate of the pump come out with enough force to blow in a bushing like that?
Awesome video! Will be doing my first rebuild of a transmission and will be referring to your video during disassembly. Would like to see a close up of your modified, snap ring pliers. Also, heard that the TH350 needs only one check ball and one of the ring seals, the middle one, can be left off the pump assembly shaft. Any thoughts on that? Look forward to more videos on this transmission. Cheers
I’m glad this will help you. The TH350 can be modified like you have said. But I tend to put it back together the way it came from the factory and the. Use a Transgo reprogramming kit. The TH350 has been around for a long time. And people came up with their own ways of improving its weaknesses. But Transgo has come up with a shift kit that they call a “reprogramming kit” which not only fixes the potential issues…but allows you to customize the way it shifts. I will be putting out a video on that set up shortly.
I've also heard that you can replace one of the sprag clutches with a stronger one out of a 4L60E. I can't remember which sprag is a weak point in the Th350. @@WarPaintOffroad
@@Chuck_S Yeah, I'd like to know more on that mod as well. Cheers