Hot Rods TH 400 Trans experts - Question

TH 400. No dipstick tube. How much fluid should there be in relation to the hole where the tube would normally be? Is there another option than a tube?

 

a cork! ??

putting all seriousness aside.....I can measure a tube and dipstick on one in my shop and give you a 'full' measurement related to outside of case were the tube seats. Won't be in the next hour or two.....I'm not at my shop today.....but will get to it. Beautiful Olds!

Ray

 

FULL HOT is about 1-3/8" below the top of the dipstick hole in the case.

 

1 3/8 inch from where the tube seats to the add mark and 9/16 up from there is the full mark
It is recommended to run them on the add mark when worm

 

^^^^^^^there you go.......saves me...and you....a little time

Ray

 

What I've found to be the best way to fill when you have an unreliable indication is pull the modulator valve, when fluid starts to run out, put the valve back in.

 

Anyone know the answer to this when talking about a 727? I've got a clutchflite that i'm wanting to use, but it has 4 inches of plumbing pipe with a cap on it instead of the dipstick- haven't opened it up yet to see how that pipe is attached.... -rick

 

I have use this set up on PG for dirt track cars
I weld a steal rod to the pipe cap with a notch that sticks down the pipe for the full mark.

 

http://www.jegs.com/i/Lokar/625/1211142/10002/-1

Lokar 1211142 - Lokar Anchor-Tight Flexible Locking Transmission Dipsticks

 

You better have some time on your hand if you have to completely fill a ****** with one of those.

 

Don't mean to jack a thread but does anyone know the stock panic shift rpm of a th400?

 

not sure what you mean by "panic" shift, but if you have the kickdown wired up, and hold the pedal down, it will generally shift around 4500. Unless you have a high perf trans, like they used to put in the higher HP vettes...they shift around 5500 or so

 

If you put it in 1st and hold the pedal down it will shift into 2nd automatically at around 4500. To my knowledge th400's have that "panic" shift feature.. I may be wrong..

 

I modify mine so they don't do that. Some models shift to 2, some don't.

 

Can you eliminate it with a shift kit?

 

I know you can with a TransGo Shift kit

 

grind a flat on the 1-2 shift valve, and plug a hole in the valve body housing.

the Trans Go kit comes with a modified shift valve

 

Thanks all for the info and feel free to jack the thread as I'm learnin' from it.

 

I could be wrong but I think our company had 1986 3/4 ton pick ups with TH 400s back then. I got in a discussion with one of my subordinates while he was driving (I was riding shotgun) about truck abuse and the subject came up about throwing the truck in reverse at 60 MPH. He said it wouldn't do anything. I wondered how he found that out.

 

^^^^^^^^^^^how, indeed?

"Good judgment comes from experience.........unfortunately, most experience comes from poor judgment"

Ray

 

I'll have to remember that quote.