I'm really curious as to why everyone believes this kind of power can't be achieved without the use of an "aftermarket" head, such as the AFR, TFS etc.? You do realize that before these heads were available, people were making SICK power with 243 and 317 castings, right? Well guess what? They still are.
__________________ 2001 NBM SS M6 Sold 2006 Spice red GTO, M6
Do you have a pair of SHITTY "budget" heads? "Toss a FAST intake on, IT WILL MAKE IT ALL BETTER!"
Do you have a terrible head/cam setup? "Just throw a FAST intake in the mix, IT WILL FIX EVERYTHING!"  |