Abstract: A core puller/mold assembly includes a mold frame containing a block mold having a mold cavity. A pair of cylinders is present, with each cylinder fastened to an opposed, exterior side of the mold frame. The cylinders each have a rod that extends beyond the mold frame joining the opposed, exterior sides. A core bar mounting bracket is fastened between the cylinder rods. At least one core bar is secured to the mounting bracket, with the bar extending toward the mold cavity. The at least one core bar is removed from the mold cavity with the cylinder rods extended and traverses the mold cavity with the cylinder rods retracted.