Thats why I decided to run the -5's again. The whole time I was building the head it was "response, response, response". I have been assured it will crack 450 but im more interested in the mid range.... The goal is 400 by 5000 RPM.... I wasn't that far off it before it died.
With the single, time will tell!
A tad bummed I took the valve relief out as I qould have been around 9:4 - 9.5:1 but atleast it's not 8.5!
Bring on the tune!