Cooler auto transmission ports on an aftermarket copper radiator

Unanswered topics | Active topics

Home » Board index » Tech Q & A » Other

All times are UTC-07:00

Cooler auto transmission ports on an aftermarket copper radiator

Post new topic Reply to topic

Page 1 of 1

[ 2 posts ]

Print view

Previous topic | Next topic

Author

Message

Johnny

Post subject: Cooler auto transmission ports on an aftermarket copper radiator

PostPosted: Mon May 04, 2026 2:14 pm

Offline

2 BBL ''SuperSix''

Joined: Sat May 03, 2008 5:14 pm
Posts: 11
Location: St Paul, MN
Car Model:

I bought a copper 22" radiator out of a 74 Dodge Dart for my 65 Valiant. It's a reproduction from a company called GDI or GoDan Industries that is long gone. It's very well made. I want to use the auto transmission cooler lines that are ported at the bottom. It looks like they measure 3/8 but not totally sure what to try and buy. They are likely NPT thread. Does anyone know what I should buy for these ports? I'd like a basic nipple to clamp the hose on to. Thanks for any help.

Top

Profile

Reply with quote

Charrlie_S

Post subject: Re: Cooler auto transmission ports on an aftermarket copper radiator

PostPosted: Tue May 05, 2026 6:16 am

Offline

SL6 Racer & Moderator

Joined: Sat Oct 19, 2002 12:06 pm
Posts: 9028
Location: Silver Springs, Fl.
Car Model:

Quote:

Being it is a copper radiator (reproduction), it could have either. 5/16 inverted flair or 1/8 npt. Either way you should be able to find the fitting you need at a local part store.
They are most likely 1/8 inch pipe thread. Just get a couple of 1/8 NPT to barb fittings. Probably 5/16 barb, but could be 3/8 barb. use a small amount of pipe sealer on the threads and don't over tighten the fitting into the radiator.
PS: That radiator will not be a "drop in" fit.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225