there should be a number stamped on the front of the camshaft. provided you know the manufactorer, go to their website, type the number in and you will see whats called a Cam Spec Card with all duration, lift, and lobe seperation.
255
The "bumps" you refer to are called the "lobes". They are a precise size that allows the valves to open and close correctly in an engine.
DOHC. Obviously a v-6 or v-8. DOHC- Double OverHead Camshafts. 2 camshafts per cylinder head.
Real simple exhaust camshafts are the camshafts nearest the exhaust manifolds ( outside if cylinder heads) intake camshafts are on the inside closer to center of engine.
A single overhead camshaft V-8 has 2 camshafts, one on each head.
4 Camshafts total. 2 above each cylinder bank. So... 2 per head.
Cam lobes
one
by its size looking and weight
they are hollow. and small in size
You have to put proper gap for lifters and use marks to make sure that timing and the positions of camshafts are correct.
No, it is SOHC.