TH400 With Transbrake: Start to Finish Build Part One of Two.

[@rodneyj3530]

Thanks for your videos! I just rebuilt my first TH400 and used your videos for reference. You do a great job explaining things.

[@speedracer412]

I also just did my first th400 using a hipster trans brake, your videos were extremely helpful, trans has worked great so far ,thanks again

[@mountainsgarage]

Cool!!

[@455wagon]

Outstanding work. I wish I had half your patience and ablity.

[@mountainsgarage]

Thanks!

[@lostinthewoods6474]

Thank you for the help.

[@larrysnellings7992]

I am getting ready to rebuild my HD TH400 for my k2500 6.2 truck (1985), and I am trying to figure out how to do a good and thorough cleaning of the transmission and parts. What should I use to clean the internal parts (such as the drums and so on)? Also, I am upgrading to the 34 element sprag. Do I need a new drum for that spray or will mine work alright for it? Thank you, Larry

[@mountainsgarage]

You most likely will need a round back drum, or just buy a 4L80E drum with the 34 element sprag already attached. Tractor Supply, or whatever you might have for that kind of store, has 5 gallon buckets of parts washer fluid. Works good. And a few cans of brake cleaner for final cleaning. The case you can scrape then clean with a pressure washer, car wash, or in the solvent after you scrub the internal parts.

[@alanjanderson9789]

Shawn can you show how you modfie the alloy pistons too take extra clutchs and how much you take off them as I am building one to go behind a blowen BBC at around 1500hp have most off the parts that you talked about and want too run a 6 by 4 by 6 clutch setup .thank you for your videos as they havs help a great deal

[@mountainsgarage]

Thanks! In the TH400 Playlist I have a video “4L80E Drum and Extra Clutches” that covers some of that. Not the best videos but it has it’s moments! I will be shooting a better video.

[@alanjanderson9789]

@@mountainsgarage Thanks Shawn but I changed the steel piston in the 4L80E drum but can't get the 6 clutch's and steels in and have no clearances

[@mountainsgarage]

@@alanjanderson9789 I did one in the video with 6 clutches

[@mountainsgarage]

I cut it to .600 thick.

[@alanjanderson9789]

@@mountainsgarage Thanks Shawn that will help alot Been going back your vidieos for a recap so I can start on the w/end making all the mods Thanks once again your vidieos are best I have found on building and modafiying T400 keep up the great work

[@edhunt3682]

How do I look up all of your videos?

[@mountainsgarage]

Click on my channel name, then go to the Playlist. If that doesn’t work let me know.

[@timmycolson7403]

Awesome videos 👍 Is there a way to stop 1st gear in the T-400 from shifting out on its own? Thanks

[@mountainsgarage]

Yes lots of info online, go to crankshaftcoalition.com and it explains the few simple mods.

[@XODOHTRO]

Hi Mate, Love your Videos. And attention to details. I have a 400 and always leak from the Pump bolts. No matter what has been done to them still weap. Any help from you will be appreciated.

[@mountainsgarage]

Hello! Certainly not normal. Did the bolts originally have an o ring or the flat seal? I use a 5/16 x 1.5 flange bolt with the flat seals, no sealer and they never leak. Always with a new pump o ring and gasket. Sounds like you have tried everything, hope there is an answer!

[@XODOHTRO]

@@mountainsgarage Hi Shawn I know it's not normal but definitely leaking the Transmission came from Jegs and I had nothing but issues with it.

[@JasonCosgriff]

How much money do you get for this type of build?

[@steves759]

Hey I have a 76 drag truck I am building and will be looking for a solid TH400 probably with a brake. Never dynod it but its a 500 inch BBC large solid roller Brodix head 14.0:1 engine. Might be 800 ish hp. Do you have a website where you price your builds or only by phone? I enjoy your videos keep them coming. 👍

[@mountainsgarage]

All the transmissions I have sold or done for people so far have been local to Maine. They all run around $2000 depending on options.

[@bebetekracing2412]

Great video..I’m the guy that called u last week about welding the hole in the drum because my bit broke..remember??lol I got it out. Are u a fan of the sonnax rear no walk bushing?ive noticed they have a kit where u can run the bushing and also the thrust washer.what’s ur take on it sir..thanks for ur time

[@mountainsgarage]

I haven’t tried the sonnax kit with the bushing, bearing and shims. I had bought a no walk bushing but figured out it would not work with the usual TH350 pump thrust bearing. I will try buying the kit. I have good luck with the stock bushing installed slightly inboard to center the bearing, installed with a little Loctite Cylindrical Part Bonding liquid. Glad you saved the drum! I was thinking about you while I was drilling the bleed hole today!