383 Magnum Question

[MoparMotel]

Haven't posted on here for a while but was wondering something. I have a 68 Charger with a 383 H code magnum. I believe from what the guy told me the motor is all original and never been rebuilt. The last time i drove it about a year ago i got on it a little bit and when i let off, it sounded like a diesel truck and the oil pressure went straight to zero. When i got it home i noticed no leaks on the ground but still haven't pulled the dip stick. The car has been sitting under a cover in my garage for over a year ( got kind of disgusted with it, just put new interior, wiring harness, and dash cluster restored then this happened). My question is what do you guys think happend? Broken piston, spun bearing?


Any feedback is appreciated. When i get some time i will pull the motor and have it rebuilt but until then still wondering what happened

[MoparMotel]

Anyone??

[Challenger340]

Broken Oil Pump drive ?

Dunno

Hook a remote mechanical gauge to it, fire it and verify no pressure.