Carefully remove the main caps, take lots of pictures and post them up here. Don't mix anything up or drop it yet.
I'm assuming you don't have access to a bore mic and calipers to measure your clearances. You could use some plasti-gauge and see what the clearances are, although this isn't very accurate. You could measure, get new main bearings, re-measure, and they should at least be tighter.
I'd put a new oil pump in it too.
Last edited by GTX MATT; 03/26/1402:48 PM.
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street