do you know if a short filter will fit directly on the engine with no adapter in a J body 360v8 without hitting anything?
FMJ’s without the 3-cat system – all came without the 90' adapter.
All FMJ’s with the 3-cat system did use that adapter system.
Headers are the wild-card – so can’t comment there.
Looking at these two photos, it “appears” the oil filter will be hard to get on/off if you do not use a 90’ adapter.
This photo is not applicable, per se, but shows the adapter difference, on engine. The picture on right has been flipped – so you are looking at the Right side of engine.
The external filters use 3 gaskets – or two, depending on design. Some gaskets, the inner and larger and smaller inner gasket is made into one gasket. Most that I see now days are three gaskets.
The thinner one goes by bolt head.
The thicker one goes where bolt goes to block.
If you do not use the thicker one (ie: forgot) – you will not notice any difference – but part of the engine oil will not be filtered.
The non-90' adapter does not use the inner gasket.
BudW