2007 and up I believe.
Type: Posts; User: Botlfed
2007 and up I believe.
Its the 6.2 L head, casting number is 823, theyre square port and flow better, you have to change intakes, and sometimes ptv can be an issue.
my new setup is a 6.0 l92 heads 230s cam 630s lift, single plane intake 90mm TB and 3600 stall, should do good. Id say to wait and see but its gonna be awhile :lol: