Agree with everyone, tear it down to the bare block and have it cleaned professionally, You will prob need to re-hone the cyl walls and maybe new piston skirts. Really just depends on how bad the metal chunks (if anything of significant size) got into the bearings and pistons.
Definitely buy a new oil pump. Yours is probably contaminated. They are cheap, the Melling M77 standard volume pump is usually good for anything under 500hp, (I've ran one for 4 seasons)
I run a Comp cams unit in my FTC (flat tappet cam) BBC. I broke it in exactly according to the manufactures break in procedure...here is what I did:
*Gobb all the cam break in red goo on the camshaft before you bolt the intake on. This stuff is supposed to "stay" on the lobes even though it seems that most of it runs off. maybe it adheres to it microscopically, IDK lol.
*use a bottle of the cam break in oil. I filled up my oil filter halfway with this stuff, that way it got to the cam bearings and lobes immediately. The other half of the oil filter i filled up with the motor oil.
*Motor Oil - I broke it in with and run Valvoline VR1 20-50W. It has high zinc and phosphorous and is probably the best "off the shelf" oil for flat tappet cams. That other stuff you were running seems too thick and not really formulated for an auto engine.
*Remove the inner springs if you are running a dual spring setup. Re-install after break in. This is according to Comp. I actually ran a lake trip or two with the single outer spring only.
*Mark distributor location with the sharpie, remove and use a manual oil pump drill attachment and spin that oil pump for about 20 minutes to get the oil and cam break in oil flowing everywhere....till you see it coming out of the push rods up top. You will see your oil pressure rising on your dash gauge. Replace distributor. Do this the day you are going to break in the new cam.
*Fire that engine up on the lake, hold it at around 2000rpm for about 20 minutes, varying the rpm speed by about 500rpm up and down occasionally. Yes this is kinda scary but its really the way you break in a Flat Tappet cam. After 20 minutes, if your motor hasn't blown up, you did everything right!
*Change oil, never run synthetic in a FTC motor
NOTE: everything I did to break in this motor that wasn't stated by Comp Cams, was direct advice from the legend that this sub-forum is named after. Seemed to have worked
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