Compression test on a 360, result OK or not?

There is a old timer trick when determining compression pressure on a vehicle's engine especially when the vehicles engine condition is unknown..
1) Every engine has a different compression ratio so that effects the number
+ wear and tear.
2) Test engine with throttle wide open and 10 revolutions (10 needle jumps) hot each cylinder.- compare results should be with in 10% of each other.
Then try again but before you install the compression gauge add about 10 small drops of engine oil ( only in cylinder you are testing so it does not spray out on your manifolds and inner fenders) and see if compression increases.
if it increases across the boards evenly, then it does not have a lot of wear. If it does not increase significantly then your engine is operating a little (or a lot) sloppy.
3) Battery voltage also effects the speed of the starter. Don't over heat the starter but make sure battery voltage is at 12v or higher.
If the battery voltage drops- so does your starter speed. To stay consistent the starter needs to be contestant.