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View Full Version : Quick Transmission Plumbing Question


Shuboxchevy
5th-May-2008, 03:36 PM
Working on my tranny cooler setup and I was hoping somebody would tell me which oil port is supply and which is return on a 700R4.

Thanks!

super_chief
5th-May-2008, 06:26 PM
I found this site's tech section to be quite helpful.

http://www.tciauto.com/Products/TechInfo/cooler_fittings.asp

Shuboxchevy
5th-May-2008, 06:57 PM
good deal. THANKS!!

The Big Al
5th-May-2008, 08:02 PM
All Gm transmissions the lower port is the supply (Oil Out).
Top is the return.(oil returned from cooler)

Note: On a old GM truck transmission that has a back and front port the rear is the supply.

Al


EXCEPTION: There are 2 years of production on 200 metric that is opposite.