360 Cylinder P.S.I.

well you did say the engine has low mileage you were told. but i have seen timing chains jump a tooth(or 2) from having many miles on them and the compression took a dump. the ignition timing took a dump too from the slipping chain. i set the timing up and nursed the car home. checked the compression and it was all around 90 lbs replaced the chain and it ran like a top. this is probably not your problem but its what happen to me so i threw it out there.