Here are a few things you should do:
1. Make sure you're using a new cam and new lifters made in the USA.
2. Check every lifter to make sure it has a crown on the face that touches the cam lobe. You can do this by holding that face against the side of another lifter: you should be able to notice a slight bulge on the face of the lifter.
3. The cam or cam & lifter set should come with some kind of container of break-in lube that is a paste
. If not, get a container of Isky Rev Lube (http://iskycams.com/cart/index.php?m...oducts_id=3964
) and use that liberally on the cam lobes. Also apply it to the lifters, but only to the face, not the sides!
4. Set the lifter preload according to the method specified in the Haynes manual. If you don't have that, I can provide some of the instructions.
5. Fill the crankcase with an oil that has high zinc content, such as Shell Rotella T, Valvoline VR-1 racing oil, or something else. If the oil says ILSAC GF-4 certified, don't use it. If it says API SM, it MIGHT be OK. Newer than SM is not OK.
6. Beg, borrow, or steal a 16 oz. bottle of Engine Oil Supplement (EOS), old part number 1052367, new part number 88862586, and add that to the crankcase. A little overfilled is OK.
7. Pre-lube the engine. Buy a tool or make one from a junkyard distributor.
8. Fire it up and rev to 2500rpm immediately. Hold it there for a minimum of 25 minutes.
9. Change the oil and filter, again using a high-zinc oil, but you can skip the EOS now. Keep using a high-zinc oil for the first few oil changes.