this has been machined already, IT IS NOT STEEL, BUT WILL SUPPORT UP TO 550 HORSE POWER ,most of you will never see that kind of power on the street, this is no junk, and will bolt right it a block as is. it is coverd in white lithium and Penzoil mix to prevent rust and KANSAS weather, if you need a big block crank here it is, it is the premium crank as it will go autmatic or standard transmissions--------816-242-4068