Ed,

If you take a good cam number like that and Google it, you'll get the answer in about 2 seconds. Same thing with head or block numbers. I use it all the time. Saves looking for reference books. Give it a try.

If you're going to keep the cam, it might make sense to keep the lifters - at least until you see how they perform. If you sell them, you'll lose money, then you'll have to buy more.

When calculating RPMs, tire diameter doesn't give you an exact result. You need to use 2 x rolling radius. Since the weight of the car "squishes" the tire down a bit, the best measurement is from the center of the hub to the ground, then double it. I'm guessing a half inch or so. With a 29" tire, you're running about 1550 RPM in fourth gear locked up. That should be high enough for the cam to work.