340 sb 1972 - external balance
just incase you dont know,,,the current 5.9 360 magnum motors also require a weighted converter or flex plate,,,these are not the same balance as what that 340 needs,,
the old LA 360 also uses a weighted converter or flex plate,,but i do not know if the 1972/1973 cast crank externally balanced 340 motor uses the same converter,,,i would hope it would be that easy,,but knowing ma mopar it might not be,,,i would think that a converter shop would have a chart for this information
