[ford3]

any idea how many miles since every thing was done? pull one valve cover and see how much oil is getting to the rocler arms at idle, if real low oil pressure there wont be much getting there, a bunch of things could be wrong, weak oil pressure regulator spring in oil pump, air leaks on several points on the oil pump, worn cam, main, rod bearings, plugged oil filter screen, bad gauge, ive had oil filters cause low oil pressure because of poor quality, or as was suggested to lite of oil, add a can of stp and see if oil pressure increases, check all the easy stuff first, add stp, heaver oil at next change, and try another gauge, its a misconception thinkink high oil pressure is the thing, its not #of pressure that keeps an engine running, its gallons per minute of oil flow that protects an engine, and some one must have changed the engine because the 55 didnt use the 292 engines, they used 239(rare) 256, 279, and 317, also rare