Dave I went with a solid roller in my small block this time. My last two have been flat's, the 408 had a flat solid and the 340 had a flat hydraulic. Both engines were ran with diesel oil and were ran for 5-6 years. Not a ton of passes or street miles on either, but in both engines the cams were starting to go. Both cams had worn lobes with porosity on the nose of the lobes that would catch your finger nail and the lifters from those bores showed more wear than the others. Both were Hughes, not throwing rocks, I like Dave and he has always been very helpful to me. I attribute the wear to the oil, maybe they would've survived with something like Brad Penn.