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THD400 trans cooler

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Old May 26, 2006 | 01:36 PM
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Default THD400 trans cooler

I'm hooking up a trans cooler to the THD 400 trans in front of the radiator and was wondering which line is the supply line from the trans and which one was the return line. I cant start the engine right now so I cant feel the warm line....Thanks
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Old May 26, 2006 | 04:02 PM
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It doesen't matter what ever works for you.
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Old May 26, 2006 | 09:07 PM
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From: Sick of these TOOLS & AZZHATS in DC
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Pretty sure top line is return and bottom is supply
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Old May 26, 2006 | 09:10 PM
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Originally Posted by NC C3
Pretty sure top line is return and bottom is supply
Think your right, so that would be the return line highest on the radiator below the cap....

Last edited by 73jst4fun; May 26, 2006 at 09:12 PM.
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Old May 26, 2006 | 09:26 PM
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From: Sick of these TOOLS & AZZHATS in DC
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No....on the radiator, the return line is the lower one. I just installed a secondary cooler in sequence with my radiator. Here's how it's routed: Lower outlet on the trans to the upper inlet on the rad, then from lower outlet on rad to upper inlet on the secondary cooler, then out the lower outlet of the sec. cooler to the upper inlet on the transmission. Hope that's not too confusing.
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Old May 27, 2006 | 06:26 AM
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Originally Posted by NC C3
No....on the radiator, the return line is the lower one. I just installed a secondary cooler in sequence with my radiator. Here's how it's routed: Lower outlet on the trans to the upper inlet on the rad, then from lower outlet on rad to upper inlet on the secondary cooler, then out the lower outlet of the sec. cooler to the upper inlet on the transmission. Hope that's not too confusing.
That makes sense....
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