ok here we go,,,tdc is found turning engine over by hand or starter bring #1 to comp with plug out turn by hand until timing mark is in time as per book,,install dist with rotor at position you want for #1 or very close to it,,note vacum advance as rotor will turn into the advance,,if engine is installed and wiring installed retard dist by hand then advance until #1 plug fires do this with ing on you will be timed...doc