Buy an inexpensive dial indicator. Harbor Freight sells some really inexpensive ones. If you are planning on blueprinting the engine or need super accurate readings the good ones will cost you a considerable amount of money but will be much more accurate.
No.
Passenger side valve cover
Under the valve cover where the valve springs are.
for all out horsepower the splayed valve Chevy head, or the sb2 or 18 degree after that
no
One of the valve covers.
The front of the valve cover, on the drivers side will have a cap.
Gonna have to pull the head and find out what's wrong. Could be a bent valve.
Pass side between the valve cover, and firewall.
read casting numbers and research on the web. Just Google small block Chevy heads castine numbers. These numbers are under the valve covers so you will have to take one off.
The pressure by pass is located on the adapter that you screw the oil filter to.
If you have the heads off then the small valve will be the exhaust. Now if the heads are still on the block then remove the valve cover and look at the valve springs. Starting at the front of the head and moving towards the rear the valves will be in this order. E I I E E I I E The E stands for exhaust and the I stands for intake.