Dear PB;
Yes; you can get oil to the rocker arm assembly W/O going (completly) through the "lower end".
Which 261" block do you have?? Is oil going through your filter?? Will it turn with the starter now?? Where is your oil pressure guage connected??
A 235 oil flow chart is similar, but not the same as; the 235 doesn't have a 'full flow' filter option.
Good luck.
