Old thread, but I just had my original pushrod eaten up by my Carter high volume pump, so beware if you are running those pumps. I checked the specs on the pushrod when I installed the carter about 3000 miles ago and it was within specs. Now it is only 3" long and shot, and like I said that was an original pushrod, not a replacement. I have seen now that others have had problems with the carter high volume pumps being too stiff, and eating pushrods.