78 400 rad cap pressure

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Nov 3, 2006 | 06:08 PM

magwheels

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78 400 rad cap pressure

Anybody know the correct pressure radiator cap to use?

Nov 3, 2006 | 06:12 PM

SRT77

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Joined: Mar 2006

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From: Ventura, CA

I think it's 13 PSI.

Nov 5, 2006 | 01:14 AM

LxMan1

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From: Louisville,Ky.

I always use a 7psi cap. I've never had a boilover issue and if something does happens, it puts less stress on things like the heater core and radiator.
But yes, 13psi is stock.

Nov 5, 2006 | 04:04 PM

Dragon22

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Joined: Oct 2005

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From: Duncan,BC~Red Deer,AB

The other day I was told 16psi from the guys at NAPA,
Maybe that is for a Canadian truck though.

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