My 54 F100 came with a half assembled 223 and a second parts motor which was also mostly in pieces. Both oil pans were off. The one I used for the rebuild has a deeper sump than the other. How do I know the oil capacity? I only have one dipstick and not sure which motor it came from. Hopefully the dipsticks were the same. My 54 manual says 6 quarts with filter. Any ideas? Thanks.
Bob

 

My '59 223 uses 6 qt.
Be sure you used the right oil pump pick up with your pan.
It needs to reach the bottom or very near.

 

Under the heading of “all equations have two ends”, six quarts is probably adequate so for now this becomes a dipstick problem. Change filter, fill the engine, run, let sit, take the dipstick you hate the most, grind a nick in the side at full and another proportionally dimensionally mathematically scientifically calculated from old marks at “add one qt” (read wild *** guess). Removing the old indicator marks is a no cost option.