Not to butt in here, but MRL has a pressure lubed solid roller lifter that`s supposed to have more reliability than some of the others. I have a set in my 505 but not much run time yet. my head flow is 352 @.600 lift, w/ a compcams 292 extreme solid roller, w/ 1/6 rockers, and have a 3500 hughs convertor that seems awful loose for 3500. the point is that it seems awful mushy down low. haven`t stuck my foot in it yet. If you are buying a set of rear tires every summer, you "are doing some hard driving! Tell us more about the bite comparison between the mt`s and the hoosiers when you get time. The cam you showed here is almost identicle to the 292 extreme solid roller, w/ the exception that MY DURATION IS 254-260. I thot this cam would be a pussycat in the 505, but doesn`t seem that way so far. sorry about buttin in ---------bob
