Specifications for the 300J/ 300K ram cam, PN 2406196, are as follows: Intake opens: 18 degrees BTC " closes: 70 degrees ABC Total intake duration: 268 degrees Intake valve lift: .445 inches Exhaust opens: 66 degrees BBC " closes: 22 degrees ATC Total exhaust duration: 268 degrees Exhaust valve lift: .452 inches Valve opening overlap: 40 degrees The long ram 300F,G 375HP cam is also a 268-268 unit, but different opening timing, overlap, and lift. The "284-284" cam was used in the 400HP versions of the "F" and "G". I had the cam ground for my ram "K" to the above specs by Jim Hyder, Camcraft,Inc, of Elizabethton, TN. That was a LONG time ago, so have no idea if he is in business now. I wanted absolute original specs, so sent him the engineering drawing of the cam as well. Hope this answers your questions. Gil [Non-text portions of this message have been removed]