Does anyone know what the application is for this distributor? How much advance? Also, based on previous topic it seems Y blocks with hot cam need a minimum of 14 degrees initial advance. I am going to have this distributor modified based on 14 to 18 degrees initial advance. Any suggestions on how soon to bring it in. The car is a 57 custom. 3 speed O/D 272, G heads, 57 autolite and 57 intake. Cam has 238 @ .50, .485 lift on int. and ex. and 16 degrees of overlap. The car was purchased from the late owner's family and we have limited knowledge of the cam. We are replacing the 600 Holley with the Autolite carb. and this distributor will be installed. Thank you all very much!!