Turbo 400 disassembly

[Kain]

Only took 3 hours to get it out this time. I will start tearing it down soon. More pics to soon

 

[76zimmer]

Inspect closely….I have no confidence in TCI stuff…..this is one of their convertors.

 

[wasted wages]

Only took 3 hours to get it out this time. I will start tearing it down soon. More pics to soon

View attachment 420750

A turbo 400.....you tore up a turbo 400...
What are we going to do with you son..????

 

[Chickntrk]

Inspect closely….I have no confidence in TCI stuff…..this is one of their convertors.

View attachment 420752

I’ve known quite a few people with similar experiences.

 

[Kain]

It engaged then didn’t , think a seal went on forward clutch/drum
Have manual and it’s on stand for disassembly now

 

[Kain]

I am going to get a B&M converter
20400 I think is the part number

And Tci used to be great and they have went the way of monster transmission

 

[Kain]

this is the converter i am looking at

https://www.oreillyauto.com/detail/c/tork-master/b-m-tork-master-torque-converter/bm0m/20400?q=20400&pos=3

 

[wasted wages]

You could tear up an anvil son....

Good luck with the T400.. you'll do good..
They aren't a hard Trans to rebuild, just make sure everything is clean!! The book you have is a good one, if you have questions stop and ask.

Oh, and don't forget to remove the center support bolt...it's under the valve body and it takes a 12 point socket, iirc...

You got this !!

 

[Kain]

yep been watching vids for a month
this way if it breaks it is my fault that i didn't do some thing right and not get screwed out nof 1600 bucks

 

[wasted wages]

Browse through this website... I've alway trusted them for parts..

GM TH400 Transmission

Sonnax Transmission parts for GM TH400 applications

www.sonnax.com

 

[wasted wages]

It would be worth the $ to have a Trans shop clean the case and replace all of the bushings in the case and drums, stator tube etc..

Its cheap insurance.. it's just like rebuilding an engine...you wouldn't leave the old main, rod and cam bearings in a fresh engine rebuild right ??

 

[Kain]

i think i am going to get jegs rebuild kit it is made in usa and has most of the parts i need

JEGS 62014: Transmission Rebuild Kit for 1965-1987 GM TH400 - JEGS

Get the Best Performance with JEGS Transmission Rebuild Kit for 1965-1987 GM TH400 62014 parts at JEGS. Shop Now at the Guaranteed Lowest Price!

www.jegs.com

 

[Kain]

i have the drivers so i will change them and no shop around here will touch it any more
will have to use acetone and brake clean for the case

 

[Kain]

i did notice it has an 8 bolt case and pump

 

[Kain]

on the stand going to get carb cleaner in the morning and some acetone then start tear down

 

[nvrenuf]

With a stall speed of 1800 to 2200 rpm, is your cruising rpm at or higher than that?

 

[Kain]

ok um at 75 i am at 2450 at 45 way lower

 

[1-ton]

You should rollorize the output shaft. Sonnax has a kit for that. It is not that expensive, and easy to do, and also get a set of plastic check balls for the valve body from sonnax. The steel balls are known for gauling the valve body ports they ride in.

 

[Kain]

was going to add this if its not already there

GM TH400 3L80 Bearing & Shim Kit Eliminates Rear Case Tang-Washer & Thrust Plate | eBay

Find many great new & used options and get the best deals for GM TH400 3L80 Bearing & Shim Kit Eliminates Rear Case Tang-Washer & Thrust Plate at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[1-ton]

was going to add this if its not already there

GM TH400 3L80 Bearing & Shim Kit Eliminates Rear Case Tang-Washer & Thrust Plate | eBay

Find many great new & used options and get the best deals for GM TH400 3L80 Bearing & Shim Kit Eliminates Rear Case Tang-Washer & Thrust Plate at the best online prices at eBay! Free shipping for many products!

www.ebay.com

You are right...TCI may have already rollorized your trans when it was new, but you will still have to get a new output bushing and roller bearing.