In this, Episode 61 of Powertec 10 DV moves on to the second part of our very comprehensive review of the UltraPro 9 degree small block Chevy heads. These heads are of parallel valve design (i.e. not canted like the SB 2 heads) and- although we did not quite match UltraPro's numbers we did see figures the outflowed the best cup car SB2 heads, but we are not done here so be ready to watch part 3 were we really go to town on these highly effective heads.