[smiles383]

Pull # 1 plug out . Place finger over hole . Have helper click engine over to see where compression stroke (firing) is. Then see if the timing marks line up (0 degrees). Pull dist cap and see where the rotor is pointing( #1 or somewhere else). If you're getting spark the cam and dizzy are probably OK . The tach is driven off the ignition coil not the dizzy . How many miles on the motor? Sounds like timing chain . If the cam jumped you should be getting a crank /cam out of sync code .