I am working on my all stock 77 "B". It came factory with the spin on oil filter adapter I'm thinking? Filter canister points up.
I don't remember how I came to the decision, but I'm using Wix PL20195 filter which is a little longer than the filter listed for the car.
The filter is listed with a "drain back valve" just like the shorter one, but when it sits for a while, like our cars often do, the oil in the filter drains back into the motor, and it takes an inordinate amount of time to fill the filter back up, to get oil pressure. I'm always very careful to keep the rpm very low until I get pressure, but I don't like it. The question is do all filters drain back over time, or is a check valve or something missing from my car? I'm going to change back to the short filter to speed up the time it takes to get pressure, but was just wondering what the deal was.
Bob Morgan