I am making the assumption that this is a full flow oil filter system with the big lines. The US Chevrolet 261 was used in big trucks and buses. The oil filter mounted on the right side of the intake manifold looking from where you are standing, (i.e. on the cab side half of the manifold.) As you can see it won't fit there in a car or pickup due to the steering column and shifters. I moved mine forward to the front side of the manifold and piped it from there.
Steve O


1950 Chevy 3100
261, 4 speed
Purchased 1977

1964 Pontiac Lemans Convert