I ran into this when building my 235. There were at least 3 different pan styles, and 3 different oil pump pickups to match. I'm running a '60 block with a '57 oilpan and pickup, with a '54 dipstick. I had to move/bend the dipstick tube a little to clear the oil pump pickup tube. Now my engine reads full with 5 quarts, no filter.

good luck

chip

Preaching the Hot Rod Gospel according to the 4-stroke apostles:

Suck, Squish, Fire and Fumes