Oil Pressure
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 932
Likes: 0
From: Lyons IL
Oil Pressure
What is considered acceptable oil pressure for a 1971 350/270HP motor.
I am using a syntetic blend oil 10w30 Quaker state oil.
At idle I am around 10-15 on Gauge at cruise it is around 30-35 when Getting on it it is well over 35 but not up to 70.
Are these acceptable and if not what should I be looking for.
I have added and additonal breather to valve cover will that drop pressure readings? :seeya :chevy :_dupe:
I am using a syntetic blend oil 10w30 Quaker state oil.
At idle I am around 10-15 on Gauge at cruise it is around 30-35 when Getting on it it is well over 35 but not up to 70.
Are these acceptable and if not what should I be looking for.
I have added and additonal breather to valve cover will that drop pressure readings? :seeya :chevy :_dupe:
Le Mans Master
Joined: Jan 2000
Posts: 8,721
Likes: 108
From: Canada
Re: Oil Pressure (Matt Gruber)
I was running 40 wt. last year and was at 35 psi constantly in my 383, switched to 30 st and it dropped to 10 psi. Checking the pump and going back to 40 or 50 wt.
Melting Slicks
Joined: Dec 2002
Posts: 2,390
Likes: 315
From: Belmont Michigan
Re: Oil Pressure (gdh)
Also, check your line and fitting where it screws into the top of the block. Even a small leak can affect the pressure being sent to the gauge. The gauge itself may be due for a cleaning/rebuild. I had both problems on a '72. You could hook up an aftermarket gauge by the engine to check it out.
Dick
Dick
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Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
Re: Oil Pressure (John D.)
10 PSI/1000 RPM is all that's needed.
Idle is low. You should go up on the oil.
Hi flow race filter can raise pressure.
There is a new Valvoline Max Life for older engines.
Additional breather no problem.
Idle is low. You should go up on the oil.
Hi flow race filter can raise pressure.
There is a new Valvoline Max Life for older engines.
Additional breather no problem.