I have a Crane hyd roller in my 440..have about 4000 miles on it..has required no maintenence...several 1/4 mile passes ..Now i think I am going to have Tim at bullit cams regrind it as its kinda mild now..regrind is about 1/2the price of a new one.Or maybe i will try to sell it for 1/2 the price and just buy a new cam..but hyd roller for a driver and sometimes racer is the way to go...