440 Oil/Capacity

I want to do an oil change in my 440, since it has not ran in about 4 years

What oil weight should I use and how many quarts (should I take a pic of the oil pan to verify?)

The motor I believe is a 1968

I looked at the passenger side of the block and found these numbers:

25364305
3 . 31 . 67

On the ID pad:
D 440 (cross symbol) B
7 31