So when I went to hook up my trans cooler to my th400, I bought adapters that were supposed to fit in the trans so I could use -6an hose. Well they ended up not being the right thread. I heard the trans had the same as npt thread without the taper, and if you tried using npt fittings it would crack the case. I might be missing some other fittings that were in there before (or are those fittings that the brake lines are threaded into and they come out? I tried taking them out but they are in there good, didn't want to break anything) I'm not sure, but what did thread in was 5/16 brake line. So what I did was flared the ends of the brake line to make it like a barbed fitting and put the hose on with two hose clamps for each line. My question is, will this be good enough? I'm not sure how much pressure goes through these lines and I don't want them coming off while I'm driving it. The hose fit pretty tight on there, I just need somebody else to confirm so I can stop worrying about it. I'm new to autos.

Second question, I researched a place for the trans temp gauge and found that the pressure test port on the drivers side right above the pan would work, is this correct?

Thanks in advance

 

How you have your lines will work. I've ran mine that way for 10 years plumbed directly to the cooler from the trans. No leaks.

 

The high side of pressure will be around 90lbs or so, That's on transbrake.

What size hose are you running? we have hose ends and the fittings to go from the case to the hose ends.

Part #FCLF2 is the fittings you need to go from the transmission to the hose ends(if you're running -6 line)

http://ftiperformance.net/Automatic-...oducts_c75.htm

 

Mine was done like that the past 8 years with rubber heater lines......one just split last month.

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OK cool, that puts my mind at ease.

I am running -6 line, and these were the two fittings I tried, they both ended up being the same size on both ends, just a little different cause they're different brands, but the pictures I've seen of then are going right into the case, not through the fittings that I have in mine, if they even are fittings, I'm not sure cause they didn't want to come out.

 

You need to take that stuff off like right now. One of two things is going to end up happening, you either burn your car down......or you wreck it from having transmission fluid spraying on your tires at speed.

 

The blue one APPEARS to be right one from what I can tell. It should be a 1/4" NPT(PIPE) thread to a -6AN fitting. Did you check to make sure that it wasn't your hose ends potentially leaking?

 

Nothing has leaked, the car hasn't even been driven with this setup yet, I've just been second guessing the way I did it. I think I am going to try and remove the fittings that are in there and try the adapters

 

Ok so I just tried taking them out again and they did come out, one of them I really had to crank on, which is probably the one I tried. So you are saying the new fitting should or should not be tapered? The black fitting isn't and the blue one is

 

SHOULD be tapered. use some Teflon tape or liquid Teflon on the threads and be careful about how much you tighten them.

 

I thought they were 1/4 in. Nps (straight thread)

 

The fittings that came out are straight, maybe some are different?

 

You need to use a straight thread for the case fittings. If you use tapered you may crack the case

 

As stated the threads are straight, not tapered.
https://www.summitracing.com/parts/SUM-220027/

 

Here is my setup.

 

Yeah I'm gonna go with straight, I had to order two more fittings because one of them is mia. Thank you everybody, I appreciate the help