Thrill seeker, I would do both engines at the same time and get it over with.

Intolerant 1, The marine engine is pretty much the only one that turns 4,000+ rpms for hours at a time, occassionally given a break when the throttle goes WOT cause we're bored cruising slow and 5,000+ rpms is SO much more fun! These habits do have a tendency to wear out things, if we don't just break them first!!

I get the idea, it just always seems to be the cam around here.

Not good
You do need to go thru the engine,You will probably find some of the cam material on the piston skirt next to that lobe.Whos cam and what lobe was it?

I can testify to the bad cam thing!! First time out with a brand new cam and lifter set!! Change everything. Cam, bearings, lifters, check the oil pump, flush your cooler, etc...

Thanks for all of the help guys

I should be back together in another week or so. If you want a ride to Kellys for Halloween, let me know.

TS
Since you lost a cam lobe, check for possible causes. The break-in procedure is critical, and use break-in lube such as Isky's Rev-lube(surgically enhanced Moly grease) and GM Engine Oil Supplement (has special anti-scuffing agents).

Also, check for valve spring coil bind. Although some people may have more scientific ways of doing this, a simple check is to insert a paper clip between the outer coils. Rotate the engine by hand and see if it pinches the paper clip. Check both intakes and exhaust.

There is now glitter floating around in your engine. The bearings probably have some in them and will scratch the crank, and piston skirts will scratch the cylinder walls. Time to dismantle it.

I would definitely check the other motor out. Valve clearance opens up big-time and is one sure sign. Burping through the carb can be an exhaust lobe.

Sorry to hear of your problem-
Bulldog aka Ronnie