Non-sense! These guys found the similar flow numbers from the OOTB EQ heads which are virtually identical to the Indy iron heads and we sell both...they flow the same with our 2.02 valves...high 260's @ .550 and .600 lift. OOTB they flow 230's with the 1.92 intake valve....
5.9L Magnum Engine - Make Mine A 5.9