Its times like these that I really really wish I owned or had access to a flow bench. Being a hot rodder at heart, I have always increased the intake and exhaust valves and hogged out the bowels under the valves just a bit to accommodate the larger valves. I do this out of habit these days because I have been doing it for 45 years. I have also hogged out the intake port, and have not hogged out the intake port. It would be really interesting to know what mods do what, if anything, and at what flow and potential rpm. Man would that be interesting.
