Is 160 Compression good?
Is 160 Compression good? You should start to worry if one of your cylinders is getting close to 100 psi. Most new engines in good condition compress at around 175 psi. (160 x 100) / 175 = 91.4% for the #4 cylinder. How do you do a compression test on a small block Chevy? All you'll need to do to test it is remove all the spark plugs and install a compression tester. Then disconnect the coil, hold the throttle wide open, and crank the engine over several times with the starter. You'll see pressure build, and finally peak, on...