Just did a compression test on my 383 stroker, vortec heads. About 500 miles on the motor, I'm not sure if the rings were done correctly....
165psi, after about 5 minutes it was down to about 160psi
How does that look? This is my first compression test.
Also, motor was cold, haven't started it in a few days. I didn't know if I was supposed to do the test with the motor warmed up or not.