We're doing a budget rebuild/refresh on an old 1972 350 and have run into a little hitch. We weren't planning on replacing the bearings or rings or anything, just mostly all of the gaskets since it leaked oil like a faucet. I'm not sure if the engine has ever been disassembled so I thought I would check out the camshaft, and found out that one of the lobes is completely rounded so now we need a new cam and lifters. We did notice tiny metal flakes on the cam when it came out like some of the cam bearings got nicked or scratched. I ran my finger around the bearings and couldn't feel anything, and couldn't see any scratches with a flashlight.

Anyway, my question is should I replace the cam bearings just in case? I know I would need to take out the crankshaft and pistons in order to get the bearings pressed in, but that really takes the 'budget' out of our budget rebuild. Can the same main and rod bearings or piston rings be reused if they are kept in the same order that they came out? That would at least save some cash if the cam bearings needed to be replaced.