C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LT1 Radiator cap, psi??

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Old Feb 18, 2005 | 11:46 AM
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From: Sometimes I wonder... why is that frisbee getting bigger? Then it hits me.
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St. Jude Donor '06
Default LT1 Radiator cap, psi??

Stock PSI is 7lb I know, But since I am replacing the radiator in my 77 I want to know what you guys might have upgraded to if at all.

I think goiung 16 PSI might be a bit much but I don't know. I will also be installing the pressurized fill tank after fabricating a bracket for it.

Comments? Suggestions? Lude Remarks? Free beeer?
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Old Feb 18, 2005 | 12:50 PM
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I thought they were 15 psi, but found that all the parts houses refer them as a 16. I agree I thought this was a lot, but I am running a 16 psi and no issues...

The higher the psi the higher the boil over point...

Mo
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Old Feb 18, 2005 | 01:38 PM
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Originally Posted by Mo_Bandy
I thought they were 15 psi, but found that all the parts houses refer them as a 16. I agree I thought this was a lot, but I am running a 16 psi and no issues...

The higher the psi the higher the boil over point...

Mo

Damn.,. OK then I shall grab a 16 PSI to go with my new radiator.

ANyone else have opinions?
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Old Feb 18, 2005 | 01:49 PM
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My old cap said 15psi, and it was the one on there when I bought the car in 97, so I guess it was original. I just replaced it, and all I found was the 16psi cap. It should work fine.
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