#8840, "RE: 6-Bolt head on 7-Bolt Block" In response to In response to 4
Originally posted by Pitchblack98 The 1g head flows better, but the 2g head can be ported out to flow more than the 1g head. Theres more material around the 2g ports than the 1g ports. So if you dont want to do a lot of work then the 1g head is the way to go.