Tranny oil cooler install question... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Gray Ghost · 06-28-2008, 03:59 PM

I can't find out anywhere [including searching this site] which tranny oil line is the return line....anyone know?

dooce · 06-28-2008, 04:07 PM

I dont know. Easy enough to find out though. Just disconnect one, turn on your truck for a second, and check to see which direction the fluid was shooting. Obviously not the best way, but quick and easy.

toddtheodd · 06-28-2008, 09:44 PM

The one that goes into the top of the radiator is coming from the tranny, and the one going to the bottom of the radiator is the return line.
Todd

**VetteVet** · 06-28-2008, 10:37 PM

This is a little easier to see. The bottom line(hot) from the trans goes to the bottom fitting on the radiator and the top fitting on the radiator goes to the bottom fitting on the trans cooler, then the top fitting on the cooler goes to the top fitting on the trans.

toddtheodd · 06-29-2008, 12:16 AM

Quote:

Originally Posted by VetteVet

This is a little easier to see. The bottom line(hot) from the trans goes to the bottom fitting on the radiator and the top fitting on the radiator goes to the bottom fitting on the trans cooler, then the top fitting on the cooler goes to the top fitting on the trans.

Well what do you know... I had the lines backwards.
When I put in my external trans cooler though, it was because the radiator threads had stripped out, and so I was using only the external cooler... so I don't think it mattered which way it went then.
Todd

Gray Ghost · 06-29-2008, 02:47 AM

Thanks for the great diagram!...that's the way I ran it.
http://www.hannawoodworks.com/BigGhostwheels.html

06-28-2008, 03:59 PM	#1
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Tranny oil cooler install question... I can't find out anywhere [including searching this site] which tranny oil line is the return line....anyone know? __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.

06-28-2008, 04:07 PM	#2
dooce Registered User Join Date: Aug 2007 Location: Tinker, OK Posts: 369	Re: Tranny oil cooler install question... I dont know. Easy enough to find out though. Just disconnect one, turn on your truck for a second, and check to see which direction the fluid was shooting. Obviously not the best way, but quick and easy. __________________ 1976 Chevy 1/2T 2wd SWB 327/Saginaw 4spd 3.73:1 LQ4 6.0/T56 Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=772071 LFSalleeII@gmail.com

06-28-2008, 09:44 PM	#3
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	Re: Tranny oil cooler install question... The one that goes into the top of the radiator is coming from the tranny, and the one going to the bottom of the radiator is the return line. Todd __________________ "The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY???

06-28-2008, 10:37 PM	#4
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,703	Re: Tranny oil cooler install question... This is a little easier to see. The bottom line(hot) from the trans goes to the bottom fitting on the radiator and the top fitting on the radiator goes to the bottom fitting on the trans cooler, then the top fitting on the cooler goes to the top fitting on the trans. Attached Images __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

06-29-2008, 02:47 AM	#6
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Re: Tranny oil cooler install question... Thanks for the great diagram!...that's the way I ran it. http://www.hannawoodworks.com/BigGhostwheels.html __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps. Last edited by Gray Ghost; 06-29-2008 at 03:11 AM.



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