The Stovebolt Site Forums The Parking Lot Big Bolts engine side pan, oil filler bracket question

If the oil-filter-line holes in the block are 1/2" NPT, you have a 1958-63 261 set-up for full-flow oil filtration.

Here are locations of various codes - post what you find and you can ID the year of the engine.

If you do not have the original full-flow filter canister, you can use any modern-style, spin-on filter-head/assembly.

It sounds like you have PCV-system plumbing lines that go between the air cleaner, the valve cover, and the closed-tube that replaces the road-draft-tube on the passenger side of the block.