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FireSale · 01-13-2016, 05:17 PM

I run a TCI Street Fighter C4 with a brake in my Mustang. They have a tech section at their site with a list of line pressures gear by gear for all transmissions they deal with, including the Turbo 400. Here's the link:

http://www.tciauto.com/tc/trans-line-pressure

Looks like 180-200 for a TB in a TH400 no matter what gear.

I've heard of drilling in a trans case to convert to brake and if it wasn't done correctly it could be your problem. My TCI came with a reverse pattern manual valve body with the trans brake built in.

If the line pressures check out take a look at the return spring in the solenoid setup. It's responsible for moving the pin out of the way to return the trans to normal operation. You should hear a very crisp snap when you release the button with the engine off.

Dale

01-13-2016, 05:17 PM	#4
FireSale VIP Member Join Date: Feb 2014 Location: Lakewood Washington Posts: 1,407 Likes: 29 Liked 237 Times in 126 Posts	Re: Trans Brake Slow Release I run a TCI Street Fighter C4 with a brake in my Mustang. They have a tech section at their site with a list of line pressures gear by gear for all transmissions they deal with, including the Turbo 400. Here's the link: http://www.tciauto.com/tc/trans-line-pressure Looks like 180-200 for a TB in a TH400 no matter what gear. I've heard of drilling in a trans case to convert to brake and if it wasn't done correctly it could be your problem. My TCI came with a reverse pattern manual valve body with the trans brake built in. If the line pressures check out take a look at the return spring in the solenoid setup. It's responsible for moving the pin out of the way to return the trans to normal operation. You should hear a very crisp snap when you release the button with the engine off. Dale __________________ Dale Shearon 68 Mustang 6394 Last edited by FireSale; 01-13-2016 at 05:20 PM.