The basics of Fast stocker cylinder heads are very simple. If you consider each intake port and exhaust port assembly as a orifice you can flow them with a constant draw and establish an effective orifice size. There are endless ways to change or improve flow. The only way to significantly improve flow is to change the effective orifice size of the assembly by porting!
Stop lying to yourselves and Stop pushing NHRA to police something that is out of control. If NHRA were to throw out ALL modified stocker heads the pits would be empty. I know I know it's only the other guys that would stoop to cheating NOT YOU!
Just buy the $1000 cast iron intake and the $3500 heads and have fun like MANY others do. Louis Jeffery
