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reducing 4l60e cooler lines

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Old 07-03-2014, 02:04 AM
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Default reducing 4l60e cooler lines

i have a 4l60e for a 2005 silverado that has 3/8 cooler lines and my 86 monte radiator has 5/16 cooler fittings. would it be ok to reduce these lines to 5/16. i heard the older 4l60s from the 90s have 5/16 line. also what pressure do these lines see
Old 07-03-2014, 03:20 AM
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I've done it on several occasions and never had any problems.
Old 07-03-2014, 04:28 AM
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thanks ill use 5/16 inverted flare at the radiator and 3/8 tubing at the trans and use 2 ft of 11/32 trans hose to couple the both of them together. thanks
Old 07-03-2014, 06:34 AM
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Originally Posted by delreyss
thanks ill use 5/16 inverted flare at the radiator and 3/8 tubing at the trans and use 2 ft of 11/32 trans hose to couple the both of them together. thanks
You can think that clearly at 4:28 AM?? I prefer the metric system, it's too early in the morning for math like that! Hahaha.

Just make sure to put a little flare on the 5/16 line where it's going to the rubber hose so it doesn't slip off at some random time a year later while under pressure. Ask me how I know...
Old 07-03-2014, 12:54 PM
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Eliminate the rubber line and use Swageloc compression fittings to adapt the 3/8" to 5/16".
Old 07-03-2014, 12:58 PM
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http://http://www.swagelok.com/searc...7-a5d3fd3672c3
Old 07-03-2014, 05:39 PM
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Why not just use an after market Trans Cooler, isn't that kind of an industry standard these days ?

Tony
Old 07-03-2014, 06:57 PM
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Gofastwclass thanks for the tip that would have been messy.

Tony most aftermarket coolers I've been looking at state that they need to be ran inline with the radiator.
Old 07-03-2014, 07:54 PM
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I guess I'll need to read up on that. I'll need one soon I hope!

Tony



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