One time about 10years ago, noise similar to this.
The oil pump was making noise, replaced it. noise gone.
It was a new high volume pump, must have been slightly out of spec.??
1951 Mercury Flathead V8 crankshaft.
Four inch stroke.
will need to be turned down, 010 or 020
will check it before sale.
Email at sargesflatpwr@aol.com
Or Private message.
E mail will be quicker response.
The engine transmission and computer, plus wire harness.
The Lincoln had an accident, 98000 miles, set up to run
in the banged up Lincoln, 2001.
Excellent for street rod project.