This is a 261 block that i just got with along with a 49 3100 i was looking to find out why my block does not have the 3 bolt holes on 3 flat pads where most people mount the new style oil filters see picture #3. all pics i have seen on line of 261s show them drilled i plan to have the shop drill them for me when i take it in. other pics are of block #s
thanks for any info.
261 block pictures