Steve
pour in the 5 qt and check the dipstick to see if the
oil is at the full mark.
Then crank the motor and let it run for a couple of minutes.
Shut it off and wait till the
oil drains back into the
oil pan.
Then check the dipstick and add oil till it is back to the full mark.
I have found that a filter will not hold a qt of oil. Maybe a 1/3 to 1/2 qt.
The length of the hoses and the size of the cooler plus the filter MAY hold a qt or more.
I think most stock pan are rated for the amount of oil they hold includes the filter.
Last year while searching for a stock 440 Chrysler oil pan I found some listed the pan as 4 1/2 qt or others listed the same pan as a 5 qt. The filter was the differents.
If you have a 1/2 qt to much oil in a street car, I don't think it's a problem.
Dwight