TH400 fittings for braided AN cooler lines?? - Chevelle Tech
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  #1  
Old May 17th, 07, 11:47 PM
Pro67Chevy Pro67Chevy is offline
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Default TH400 fittings for braided AN cooler lines??

I have a TH400 that I want to get AN fittings for, so I can use braided line. I did a search but I am still a little fuzzy.

I bought fittings from ATI that were advertised as the ones I need, well, they don't fit my trans. They look like NPT on one end and 6 AN on the other. They don't thread into my TH400.

Guys here post that they are buying "inverted flare to AN" fittings but I don't know what size inverted flare is on the TH400 or where to buy them.

Does anyone know what the fitting size is on the TH400 or where I can get these conversion fittings?

Thanks
Jim
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  #2  
Old May 18th, 07, 1:08 AM
Ron454 Ron454 is offline
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Default Re: TH400 fittings for braided AN cooler lines??

I just installed the Jeg's EZ kit. I believe it came with either 3/8 or 1/4" pipe to AN fittings.

Ron
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  #3  
Old May 18th, 07, 7:09 AM
fowl69 fowl69 is offline
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Default Re: TH400 fittings for braided AN cooler lines??

gotta be careful with that you will split the case. Lance Wilson <wild1955@hotmail.com>
email this guy and ask him what size he just did a tb 400 with an lines
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Old May 18th, 07, 10:43 AM
Jepprox Jepprox is online now
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Default Re: TH400 fittings for braided AN cooler lines??

They should be 1/4" NPT to 6AN flare fittings. Just installed these into my TH400.
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Old May 18th, 07, 1:38 PM
Jason Snyder Jason Snyder is offline
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Default Re: TH400 fittings for braided AN cooler lines??

Quote:
Originally Posted by Jepprox View Post
They should be 1/4" NPT to 6AN flare fittings. Just installed these into my TH400.
DITTO, me too!
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  #6  
Old May 18th, 07, 2:58 PM
Ron454 Ron454 is offline
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Default Re: TH400 fittings for braided AN cooler lines??

Quote:
Originally Posted by fowl69 View Post
gotta be careful with that you will split the case. Lance Wilson <wild1955@hotmail.com>
email this guy and ask him what size he just did a tb 400 with an lines

Well, you use teflon paste and don't tighten them in like crazy.

Ron
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  #7  
Old May 20th, 07, 8:51 PM
Pro67Chevy Pro67Chevy is offline
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Default Re: TH400 fittings for braided AN cooler lines??

I have the 1/4 inch to -6AN fittings that ATI sold me but they don't fit. I get maybe a half thread turn. Is the trans side a "fine" thread? The fitting I have looks to be a "course" thread. Here are the pics.




I stuck the fitting in to show the size. it isn't threaded in.
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  #8  
Old May 20th, 07, 9:09 PM
Bob West Bob West is offline
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Default Re: TH400 fittings for braided AN cooler lines??

looks like the brass fitting should screw directly into the transmission to me.
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  #9  
Old May 20th, 07, 9:17 PM
smittyocat smittyocat is offline
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Default Re: TH400 fittings for braided AN cooler lines??

I agree with Bob I believe that you remove the trans fitting and install the adapter directly into the trans case, the white part appears to be a seal. I would try carefully removing the line adapter from the tranny and see if it threads into the case, I think you will find this to be the correct way to install it.
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  #10  
Old May 20th, 07, 9:17 PM
Pro67Chevy Pro67Chevy is offline
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Default Re: TH400 fittings for braided AN cooler lines??

i thought about that but I didn't know if the fittings in the trans just screwd out or not.
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"It's all in the smoke!"
Video 1 Video 2

No time slips yet, 2013!!!
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  #11  
Old May 20th, 07, 10:43 PM
mc71454 mc71454 is offline
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Default Re: TH400 fittings for braided AN cooler lines??

You have to remove the tubing fittings from the trans, then the 1/4 NPT will screw right in.
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  #12  
Old May 21st, 07, 8:51 AM
Pro67Chevy Pro67Chevy is offline
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Default Re: TH400 fittings for braided AN cooler lines??

Thanks guys. I'll check tonight. Sounds logical. I just didn't think they screwed out until now.
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Jim M.
'67 Velle
468
th-400
12-bolt,4.10s
My Chevy...
The Velle 468 Int

"It's all in the smoke!"
Video 1 Video 2

No time slips yet, 2013!!!
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  #13  
Old May 21st, 07, 9:00 AM
forcd ind forcd ind is offline
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Default Re: TH400 fittings for braided AN cooler lines??

the threads in the case are not npt, but a straight thread, called 1/4 something else-the easy way out is to keep the brass adapters, and use flare to #6 adapters, as used on carbs and power steering-do a search, this has been repeated many times, i have even supplied part #'s
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