Notice. There is a National shortage of camshafts for the inline 6. 12Bolt does have cams in limited #'s. Prices will be higher than normal. For 2 reasons. Had to buy cams from different vendors than normal and there are no cores expected for appro 12 months. Cams that are available are listed A tip. Cams are hard to get right now. 250 can use a 250 or 292 cam. You will have to use a electric fuel pump if 292 cam is used in 250. 292 has to use a 292 cam to clear the rods.