|
the new 227 afr is the best 23 degree head on the market period! the next step up would be something along the lines of a cfe 18 degree head. but u need to order a set of competition 227's with the spring upgrade, which i believe u can now get them with a pac spring. these heads will support alot more than 550hp! my 415 with the 227 head is giong to produce around, at at least, 750hp!
__________________
TMR performance
|