I had my new Ford Jon Kaase SCJ heads flowed. Intakes are 2.25" and exhausts are 1.76". Work was done on a Super Flow SF-600 and are at 28".
Lift Intake Exhaust
.100 82 79
.200 173 134
.300 247 171
.400 308 198
.500 337 225
.600 323 242
The web site for Jon Kaase compares the new SCJ heads to the older CJ heads.
http://www.jonkaaseracingengines.com...d_s_new_s.html
Wayne and Mike Kerley from Active Racing Engines did the work. They build all the engines for Speed Channel's Dream Car Garage.