Ok so I jsut did a compression test on my 92, my numbers were all between 400-415psi. And all I could find for the spec was for them to be within 10% of each other.So I know Im good, but I was just curious as to what a 180k mile motor, should be testing at (psi), or just some numbers yall have put up?. Also did a buddies 05 6.0 choker today ranged 240-400psi