My M.W. unported SRs flowed 340 CFM @.700, the ported 440-1 flowed 370@ .700 on the same bench shruggy
I didn't have a good set of dyno headers for the ported 440-1, the header flange protruded, blocked, into the lower exhaust port about 1/4 inch. They fit fine on the SRs but both motors I dyno tested the -1 heads started missing around 5200 RPM, it was a intermittent miss, not a steady dead cylinder miss confused It missed all the way up to and above peak HP RPM on both motors, the high compression race motor(526 C.I. 12.8 to 1 comp.ratio) missed worst than the smaller pump gas motor did (517 C.I., 10.8 to 1 comp. ratio) shruggy

Last edited by Cab_Burge; 02/12/17 03:46 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)