[uncle max]

Some nuances: The bowls have 97 size major venturis; the bases are counterbored from the top to accept the bigger venturi, and use 81 size throttleplates. The bowls have no slot in the powervalve chamber, but instead have two bleed holes - a good idea to prevent crimping the leather of the 81 size accelerator pump. Factory jets are .038" with #69 powervalves. The bare bowl casting was noticeably heavier and weighs 2-1/2 ounces more than an original 81. Probably due to more modern pressure die casting. All the machine work is incredibly precise. Stout, tapered boss for the fuel inlet. Two or three vacuum holes in the base and bowl needed to be plugged for hotrod service. The crude kicker linkage was put in the trash. All in all, challenging and fun!