Distributor timing

Another sure way is remove valve cover on #1 cylinder, spin the engine over in the correct rotation, and watch for the intake valve open and when it closes look at the TDC mark on the balancer ad set to 0 degrees. Install the distributor so that the rotor button points to exactly#1 cylinder in the distributor cap. Then move the distributor 5/8" backwards (advance) and loosely tighten down. This should be within 5 degrees of being right. Start engine and disconnect the vacuum advance and plug temporarily. Set timing and connect advance hose back to distributor.