Cam identification, conditioning, re using.

So ..

1. - a quick measurement with a dial caliper across the base, then across the peak of the lobe. Subtract one from the other, and multiply that by 1.5 gives you the valve lift. There likely might be a few thousandths wear, but it's a start to match up.

2. - cam lobes are tapered as viewed from the side, which allows the lifter to spin in the bore, as it should. It is a very slight taper, might be hard to see. Coloring is normal. A good cam grinder can regrind stock cams to slightly larger.

3. - no big changes, then stock should be ok.

4. - a spring tester. Summitt has them, but only worth it if you're building a few motors in my silly opinion.