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Old 05-16-2024, 04:01 AM
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Question What thread is this?

What is the thread on the connection in the radiator on the cooler pipes that go from the gearbox. Camaro Z28 2001.


What thread is this?
Old 05-16-2024, 11:38 PM
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Originally Posted by kristian swe
What is the thread on the connection in the radiator on the cooler pipes that go from the gearbox. Camaro Z28 2001.


What thread is this?
This is the wrong section but by gear box do you mean transmission?? That's probably the cooler line. It's either a 1/2"-20 or 5/8"-18 inverted flare. That one in the picture looks like 1/2"-20
Old 05-17-2024, 12:32 AM
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Gearbox = Automatic transmission (In this case anyway....)
Old 05-17-2024, 01:42 AM
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Originally Posted by 91 Z28
This is the wrong section but by gear box do you mean transmission?? That's probably the cooler line. It's either a 1/2"-20 or 5/8"-18 inverted flare. That one in the picture looks like 1/2"-20
Thanks. UNF or UNC?
Old 05-17-2024, 07:16 AM
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Originally Posted by kristian swe
Thanks. UNF or UNC?
UNF thread
Old 05-17-2024, 01:10 PM
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The fitting is 5/16" inverted flare.

The threads on the nut for that fitting are ½"-20 which is fine thread. (UNF) Std UNC ½" is 13 TPI.
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