Best get an old Manual for yrs that had 261's or bigger trucks that had them or both! Try the www.inliners.org site with question. I have no idea what the "full-flow" part is about, has bigger lines I understand. Isn't there a pipe plug in oil line "bump" on side of block you can remove and put in fitting?


G.L. Grumpy's
Old Iron Ranch
Huntington, IN 46750


MM R tractor, Speedex
and Power King tractors