I believe the new KB might weigh a little more do to the improvements to the new support in the lifter area and a few other things such as the new billet main caps. Is the weight of 110lbs on the old KB blocks or the new KB block. When I am up at FHO I will ask Tim if he has calculated the weight of the new block and what that block was machined for. Even if the new blocks are 5 more lbs that is a huge weight saving over a Iron block. If the iron block is filled the weight saving could be over 200 lbs.