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coolant pressure limits on LS3 combo

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Old 04-22-2008, 06:42 PM
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Default coolant pressure limits on LS3 combo
Does anyone have objective data on what coolant pressures these clocks/heads will tolerate?

I am thinking of running a 25# radiator cap.

Thanks
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Old 04-23-2008, 09:50 PM
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i don't think its so much the heads or block but the seals in the water pump as well as the hoses and what not. Just a guess though.
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Old 03-30-2013, 12:41 PM
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What is the max Radiator pressure, on a LS3 system? 25 psi OK?
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