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Old 03-17-2023, 12:36 PM   #1
6600DURAMAX
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LS3 Radiator Overflow port

Have a question in regards to the radiator overflow port that's below the radiator cap - I intend to run this line over to a plastic tank - similar to the factory one. Is that acceptable or is a pressurized tank needed ?

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Old 03-17-2023, 12:49 PM   #2
mongocanfly
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Re: LS3 Radiator Overflow port

My overflow tank is not pressurized, on my C30 I used the original 81tank and radiator
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Old 03-18-2023, 08:38 AM   #3
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Re: LS3 Radiator Overflow port

No pressurized tank on mine. Just a standard overflow tank. It sucks in coolant when cold and pushes some out when warm.
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