Mountains Garage: 1988-Up TH400 Transmissions

[@leonardleonardlove20]

Thank you for the update Paul.

[@laynelommen9460]

Thanks Shawn from mountains garage. Good info brother.

[@jeffallen3382]

Best TH400 information on KZbin bar none! Thanks Shawn!

[@mountainsgarage]

Awwww! Thanks for watching!

[@jeffallen3382]

@@mountainsgarage you're welcome sir!

[@BigFun4Life]

I always look forward to your videos,thanks Shawn for sharing your knowledge.

[@mountainsgarage]

Thanks Buddy!

[@normanhardiek7316]

Good day to you Sir. 🗜

[@MHolt3573]

Shawn have you seen the new forward and direct drum set up from Sonnax. Both drums are made into one.

[@mountainsgarage]

Yes I want to have one for my TH400.

[@MHolt3573]

@@mountainsgarage if you get one please do a video on it if possible sir.

[@MHolt3573]

Awesome video sir. Thank KS for the information.

[@timweb1510]

You have great uploads, I’m always trying to learn more

[@gregsmith9457]

👍👍👍

[@cumberlandfleetservice6152]

How much do the new bolts add to the cost and where do you get them?

[@mountainsgarage]

I buy them in 100 bags on Amazon or eBay, grade 8 flange bolts, probably adds $15 to the job.

[@Thisusernamebites]

Thanks for another great video Shawn. I'm building a 1988 TH400, It has a Hipster transbrake valvebody with engine braking and will be behind an 800 hp LS with on nitrous with a 4000 stall PTC converter. This is mostly a street car with some strip use. Do you see any problems using the new style aluminum pistons in this case?

[@mountainsgarage]

I have used them before.

[@265chevy]

thanks for the video Question you can only have a manual valve body in the 88 and up transmission or you still can make it shift automatically

[@mountainsgarage]

You can do either.

[@timothyheller2580]

Where do you order your transmission parts from

[@mountainsgarage]

Everywhere I can, stuff is hard to get sometimes!

[@BreakingStory411]

Great info as usual!

[@projectghostrider275]

Love all the Th400 info you have. What is your recommendation for an output shaft @ 1000whp. Car weighs 3600lbs and will have a rear gear of 4.11 to 4.57 Not sure what to pick 4340 or 300m or if there are other options. Thanks in advance

[@steves759]

Sure wish you weren't so far away. I'm needing a TH400 for my ProCharger build. Can you tell me what your experience with transbrakes and street use is? I'm hearing from some builders a stern no do not do it and some saying just the opposite. I only plan to race it about 2 weekends a month during race season. But I want to be able to drive it pretty regularly also.

[@mountainsgarage]

I see no issues with it, many fast cars with transmission brakes driving many miles. Only downshift at low speeds and RPMs and you are good.