Because extra weight on the pushrod side of the valvetrain isn't as critical, teams are using larger (and heavier) pushrods to further stiffen the valvetrain. This is a 1/2-inch pushrod that tapers to 7/16 to help with clearance in the cylinder head. It also has a thick wall to further strengthen it at 0.180-inch. To keep from having to maintain a vast inventory of different length pushrods, DHP uses these pushrods with press-on ends. Once Viccaro determines the exact length he needs, he cuts down the end of the pushrod in a lathe and then presses on the ball end.