1946-1948 Flathead Oil Pressure

1

1962300

Senior Member
I have an electrical sending unit in the back of the block feeding the gauge on the dash.

Since there is another "line out" feed, next to my current sending unit, I would like to add a small mechanical gauge to live there under the hood.

Anyone know what numbers I need the gauge to go up to?
60 pounds?
80 pounds?
More?
Less?
What max pressure is normal for this year flathead?

Thanks!
 
What does your existing gauge say ?

That should give you a guide.

It would prob be wiser to use the other fitting for a by pass filter.
 
I don't know about the '46-'48 cars, but factory specifications for an 8BA engine is for the relief valve to open at 57 lbs. Given this, I think an 80 lb gauge would be a better choice.
 
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