'89 Injected 318 Camshaft

So w/o me looking at my cam, should a pre-Magnum factory fuel injected 318 cam have the snout?

Yes... I believe it will if it came out of a mechanical fuel pump engine...

Look at the timing chain cover to see if it has a mechanical fuel pump or if it's blocked off for a clue....

Mechanical fuel pump should have a snout, blocked off fuel pump on timing cover should not have snout....