How large is your oil filter? I am running a NAPA 1515 filter and pretty long oil lines. My 261 takes about 7 quarts to read full.

SWEET
Sergeant At Arms: Old Dominion Stovebolt Society
BUNS?!?!?!Where we're going, we don't need no buns.....
1950 GMC 450
1951 Chevy 1/2-Ton
The GreenMachine
In the Stovebolt Gallery