Within Stock rules???

[Tony Corley]

Originally Posted by Todd Hoven

what makes you think that the heads are not the best they can be right from GM? Why would you have to start with a new head anyway? These cars were build in a max effort capacity to begin with by a company that has every resource.

And yet a company that builds racing engines prefers to mill the intake surface and change the port..... Things that make you go Hmmmm!!!