These are summed up for you...
Head Flow Data In CFM-Source:
Stan Weiss' - Cylinder Head Flow Data at 28 Inches of Water
Head......................................Head CC..........Valve sizing (Int/Exh)...Flow at .500” lift
E7 Irons............................................. ......................1.78/1.45...........159/109
E7 Ported Power Heads...........................................1. 90/1.60 ...........217/174
Ford GT-40 E7TZ.......................(60)................... ......1.84/1.54...........187/129
Ford GT-40 Y303 Alum..............(54).........................1.9 4/1.54............212/134
Ford GT-40 X303 Alum..............(64/58)....................1.94/1.54...........238/173
AFR 165 Street.........................(58-64)....................1.90/1.60............243/185
AFR 185 Street/Strip................(58-64).....................2.02/1.60...........267/185
AFR 205 Race...........................(58)............... ...........2.08/1.60...........291/225
AFR 225 Race...........................(60)............... ...........2.08/1.60...........295/242
Canfield 192 Alum....................(54/58/65)...............2.02/1.60............262/190
Edelbrock #6022 (170cc).........(60).........................1.90/1.60............225/170
Edelbrock #6025 (170cc).........(60).........................2.02/1.60............229/172
Edelbrock Victor Jr................................................ ...2.05/1.60............266/193
Holley Systemax Heads...........(61).........................1.94/1.60.............221/167
Pro Topline Alum (180cc).........(58/64)....................2.02/1.60 ............271/193
TFS Street Heat (192cc).......... (64).........................2.02/1.60.............255/190
Trick Flow High Port..................(64)........................ .2.02/1.60.............257/183
Trick Flow TW’s (170cc)............(61).........................2. 02/1.60.............251/187