Tim excellent info and thank you very much!! This also explains alot to me. I've had good results with the 1.5 rockers in the past. I was pooped on a few times by guys telling me you lose lift which I fully understand. But also said lack of performance which I've found not to be true. If anything more as you described. The engine had never run better. Thank you for the fresh perspective on this! You have taught me quite a bit! G.