360 Cylinder P.S.I.

Those numbers are low. Try putting a couple of squirts of oil in the cylinders and repeat the test. If the results improve you are leaking in the ring/piston area. If they do not go up, your problem is in the heads/valves.

also it could indicate the engine hasen't been running in along time if there low and you haven't heard the engine running, never start an engine that has been sitting without priming the oil pump and putting a little lubercation on the rings via a squirt of oil down the plug hole