^^^^Don has a point there on cam size. My 408 is 251/256@050 SFT on a 106 LSA. If I had it to do over again, it would be a bigger cam. There's plenty of "room" at idle for more cam, almost too smooth! 5000 stall 8" converter, Hooker Super Comps, Super Victor and an 850 DP. More cam for me next time!!