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Well FWIW my B1MC's top out at 452-457cfm, on three different benches over the years. The 99's are at 590 at 1.000". The -1's for the street car are at 370. All of these are hand ported heads no CNC stuff. B1's by Mike Duke,99's by Schumacher racing then Mike Duke.


All I can say is, DAMN..............I NEED to drive your car.......


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....