got some testing to do with pulleys, one down,, one up,, both up,, one 327,,,,,then being built now is a 346
being my lower pulley cracked, i am starting all over with pulleys and the gearing

one of the these will be the gears in the car,,307,,,327,,,346,,,373,,
pulleys are 185 ,,or ,185 stacked with a 84 super charger pulley or 180 stacked with 84 s c p,, or 84 only or 185 only
or well lots of testing to do. but that is the sum of it. jim