MOPAROFFICIAL said Iron #974 11/32 nailhead w/undercut stem 1.94/1.60 valves blended in, minor guide trimming. --------Int--------exh .100..64............. .200..128.....103 .300..191.....146 .400..229.....169 .500..241.5..180 .550..241.....192 .600..240......199 Click to expand...