The heads were supplied as Indy's cnc ported 210cc version but I wanted a 2.05 intake valve as the original engine build was to be based on a 318 block. The exhaust ports and seats were standard indy cnc porting as were the chambers, but the intake ports and seats were supplied unfinished so that shady dell could set them up to suit the 2.05 valve, they also reworked the seats. From memory they flowed 306cfm at .600, 301cfm at .550, 298cfm at .500, 290cfm at .450 and 270cfm at .400. the exhaust ports don't flow as well as I would of thought. 179cfm at .400, 190cfm at .450, 201cfm at .500, 207cfm at .550, 214cfm at .600, 220cfm at .650 and 224cfm at .700.
Because I already had the rotating assembly I stuck with the small bore on the mopar block. I'm not after huge power, more so driveability and lots of torque.