4l80e cooling line fitting???

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Mar 13, 2006 | 06:56 PM

Yellowsierra

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4l80e cooling line fitting???

Im going to run -6 an line for my tranny cooling lines but i cant figure what kind/size fitting screws into the tranny for the cooling lines. I think its a 1/4 NPT. Does anybody know what size fitting that is???

Mar 13, 2006 | 07:06 PM

Jimmy P

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I have read it is a 1/4" NPT.

Mar 13, 2006 | 07:21 PM

Yellowsierra

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Quote:

Originally Posted by Jimmy P

I have read it is a 1/4" NPT.

Thats what Im thinking... The fitting is .512" and has 18 threads per inch so Im thinking 1/4 NPT.

1/4 NPT= 18TPI and .485"-.540"

Mar 13, 2006 | 07:59 PM

8a8mfh

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depends on the year too. i'm assuming yours did not come with clip in fittings.
If it did you need to put the proper fitting in the rear hole.

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