That is called an In-liner filter, or something like that. It bolts on in place of the oil distributor cover. Instead of returning filtered oil to the pan, the filtered oil goes to the rocker arm supply. For a 216 splash-oiler, quite a rare part. I've seen one in the past 15 years but I don't get around much.
~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer
| 
