I hope someone can help me here. I ruined my trans cooler lines taking the transmission out, and I just want to run braided line to the external cooler and bypass the radiator. (I drive it only in the summer) I think the cooler outlet/inlet fittings on the transmission (700R4) are 5/16 flare, so what I need is a 5/16 inverted flare to -6 AN adapter. The problem is I cant find one anywhere. I know someone has to have used braided trans lines before, can someone give me a pn# or tell me where to get an adapter like this? Thanks.

 

Aeroquip made one but I can't find it in the catalog.

 

http://www.demon-tweeks.co.uk/ http://www.cvproducts.com/cv/

 

Thanks anyway, but I couldnt find what I needed on either of those sites.

 

A 5/16 IF to pipe thread would work as well. Anyone else?

 

most good parts stores carry npt to flare stuff. my local nala dealer has an to npt or an to flare. any hydrolic shop ought to have what you need. look for parker hydrolic store, thay would have it too.

 

I found that a mechanical fuel pump adapter will work. Summit pn# AER-FCM2111. Thought Id post an update for the sake of archive information.

 

That sounds vaguely familiar... I remembered they called it a fuel system adapter but I was looking for 5/16 I.F. in the catalog.

 

'formularpm' my experience comes from the Th350, but I didn't use those brass fitting and ran a NPT -> 37°AN straight from the case. It's been awhile but I think it was 1/4 to #6 (I think?).

I than used a B&M cooler. The one that comes with 1/2 NPT in/output. Yea, the big one. Earls or Aero I think make the 1/2 -> #6, but Russel doesn't.
Guess what I also did? Now is the time to patch in a Trans temp gauge. Get yourself a 'T' fitting, and patch it in on the braided return line.

Ron

 

Are the threads in the TH350 case NPT? The 700R4 case threads are a strait thread, I would have to re-tap them to pipe, and the trans is already assembled so that isnt an option, Im stuck with the brass fittings. I was also planning on the t-connection in the return line.

 

If you look closely, the I.F. fittings on the 700R4 are actually brass adapters, if you remove them the case is probably tapped NPT.

 

Ive got the brass adapters out of the transmission now, oddly enough, the tranny side of the adapter is a strait thread, not tapered like NPT.

 

Could be NPS then?

 

Did you find out the true size of the fittings on the tranny? Are you sure they are not metric? Anyways this site has helped me out before with converting thread sizes, hope it helps: http://www.holley.com/HiOctn/ProdLin...PTS/EPPTS.html

Also does anyone know the size of the fittings on the radiator transmission cooler?

 

Same size, 5/16" inverted flare.

 

I don't see how using an NTP on straight threads is a problem?
It's going to wedge in there and provide a positive seal anyhow right.
If it is a problem, than use a die on the soft aluminium fitting.

Mine doesn't leak, and the hole is probably the same as the 700.

Ron

 

Even tapered threads need sealant anyway.

 

Absolutely, I used Teflon tape on the ones in the photo.

Ron

 

The lines going into tranny seem to be the same as the GM fuel lines (I very well may be wrong). If they are the same size you could simply use a these fittings. http://www.jegs.com/cgi-bin/ncommerc...14&prmenbr=361

 

Has anyone found out what size the hole in the 700R4 tranny is (not the fitting)? Since my tranny is out, and my cooler is GHETTO RIGGED right now, I'd like to make some braided lines for it and mount my cooler in a more permanent location.

Also, does anyone know what the pressure is inside those cooler hoses/lines?

 

The holes in the actual case are a strait thread, not NPT. You probably will not find a fitting for the case itself, but there is a 5/16 IF to -6 AN adapter that will attach to the brass fitting in the trans and allow you to use the braided hose. Summit pn# AER-FCM2111

 

That part number brings back a 1/2"-20 IF to 6AN adapter. Is 1/2"-20 the same as 5/16 IF?

 

formularpm,
AER-FCM2111 is an a "-6 AN to 1/2-20 thread inverted flare" are you sure you want inverted flare? Arn't the stock lines 5/16 standard flare not 1/2-20 inverted?

Also there is like 4000 different types of AN fitting and hoses. Will all AN hose work or is hightemp hose needed?

 

A 5/16 Inverted Flare fitting has 1/2-20 threads. I'm pretty sure that's the same part I used and it worked fine.

 

Would it be possible to use Earls Super Stock hose and hose ends? What kind of pressure will the hose be exposed to? It'd be GREAT to not have to use a wrench to attach those hoses to install the cooler hoses inside the tranny tunnel. www.anplumbing.com says the hose is good to 250psi and 250 deg F. continious usage. Are those ratings plenty, or too low to be safe?

 

'Scott', I'm using regular old Russell Pro-Flex braided hose which is good to 350F and a max of 1000PSI. That's probably peak, but I heardly ever see 200F with the B&M super coolers. Braided line is often use for dry sump oil system in a race enviroment. Your safe

Ron

 

The Super Stock hose is not a braided steel hose. I think its rubber bonded with a nylon sheath, and the connectors are push on, rated at 250psi. Having push on kind of scares me though, unless the stress applied to the hose and ends is well under the rated specs.

 

I wouldnt worry about the pressure rating of the hose, automatic trans pumps dont put out anywhere near 250PSI to the cooler.