Radiator npt fitting/plug size for 5.0 radiator - TCCoA Forums

 
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post #1 of 4 (permalink) Old 06-17-2017, 04:51 PM Thread Starter
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Radiator npt fitting/plug size for 5.0 radiator

Does anybody know the radiator plug size "npt"threading I need to plug my radiator trans line inlets .
Because I'm installing a trans cooler that did not come with plugs
Unfortunately I'm not sure and neither is the clueless auto parts.
Motor is 5.0 efi 91 Thunderbird
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post #2 of 4 (permalink) Old 06-17-2017, 05:29 PM
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If you remove the (2) fittings that the transmission cooler lines thread into on the radiator..
Then you would need (2) 1/4-18 NPT size plugs to seal the transmission cooling section of the radiator, no longer in use..

If you leave the (2) fittings that the transmission cooler lines thread into on the radiator in place..
Then you would need (2) 5/16" plugs to seal the transmission cooling section of the radiator, no longer in use..








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post #3 of 4 (permalink) Old 06-17-2017, 06:08 PM
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There is no need to plug those holes, no coolant can leak out of them.

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post #4 of 4 (permalink) Old 06-17-2017, 06:12 PM
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Quote:
Originally Posted by MadMikeyL View Post
There is no need to plug those holes, no coolant can leak out of them.
Just to keep the critters out..lol






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