Hey, have a ?, really a friend, had a discussion on getting his heads reworked and was thinking about installing the bigger intake valve 1.77 vs the 1.70 is there much more of a gain by going this way or staying with the stock size valve, the heads that I have had done has the bigger valves but have not had awhole lot of time to notice a big difference in performance, we was just wondering if we should spend the money on something else or what. Jr.