Turbo400 TQ converter drain plug and fluid

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Grit dog

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Do they have a drain plug on the torque converter and anything special for fluid?
Thanks
 

PrairieDrifter

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No drain plug, all fluid goes in and comes out of the center snout. Just regular old atf.
 

Frankenchevy

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Yep, common body of fluid shared with the rest of the transmission. Some people like type F, some like dex. Factory would’ve been dex III. Now we’re up to dex VI I think...
 

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Once upon a time converters had drain plugs. Probably like a 1964 time.

At some point it was a practice to drill a hole to drain them and use a blind rivet to reseal them. That was probably about two hears later, and it was a one-time deal.

Obviously it wasn't a big enough concern to make anybody turn it into a standard practice.
 

Grit dog

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Thanks, that’s what I thought, but haven’t changed fluid on a 3 speed auto in about 30 years. And easier than checking for myself lol.
Same with fluid. Don’t recall them being finicky.
Guess I’ll do a fluid replacement draining through the cooler line after replacing filter and oil in pan.
 

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