Set the timing and prime the carb before you turn the key. The new cam ain't gonna tolerate a whole lot of grindin' on the starter without some splash lube from the crank. Bring the rpm's up to about 2,500 for about 20 minutes, while monitoring oil pressure and water temp. I also use a bottle of GM Engine Oil Supplement in the oil. Get it at any GM dealer at the parts counter. It contains molybdenum disulfide, an extreme pressure lubricant that your cam lobes will like. After 20 minutes, shut it down and change the oil and filter and add another bottle of Supplement. Change oil and filter again at 300 miles. No further oil additives should be necessary. That's how I do it, others' methods will vary.