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Old 10-15-2008, 12:35 AM   #1
Pont406
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Location: West Hills, California
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Factory oil pressure gauge reading

How accurate is a factory oil pressure gauge compare to aftermarket one in a 69 c10? I like factory gauges but my oil gauge reads weird. Hot oil pressure at 800rpm in gear is 3/4 reading. Anything over 2200 rpm and a needle is slightlly over the H. All readings after driving for 30-40 min and 180 temp. Is 3/4 reading 30psi or so? Thanks
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Old 10-15-2008, 04:19 AM   #2
JimKshortstep4x4
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Re: Factory oil pressure gauge reading

I have a master gauge that I have compared the factory gauges to and the readings have been close. Your 69 probably has a 60 psi gauge in it so a 3/4 reading would be approximately 45 psi.

Jim
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1965 Impala SS 400 sbc, Muncie rock crusher
1966 Impala SS 396 bbc, TH 400
1969 El Camino, 350 sbc, TH 350
1971 Snowplow built on a Blazer frame
1972 GMC Short bed, stepside, TH 400, 427 BBC
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Old 10-15-2008, 06:33 AM   #3
Sport/Truck
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Re: Factory oil pressure gauge reading

Quote:
Originally Posted by JimKshortstep4x4 View Post
I have a master gauge that I have compared the factory gauges to and the readings have been close. Your 69 probably has a 60 psi gauge in it so a 3/4 reading would be approximately 45 psi.

Jim
Thanks for sharing that info! You usually have people say stock gauges aren't accurate. The only truth to that statement is they don't have anything to compare them to. Since you've compared to a couple of gages with same results thats good enough for me!
s/t
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