I'm getting ready to, hopefully, make a motor for a potential customer who has some Indy 572-123 ported heads with Jesel paired shaft rockers and so on, I'm wondering what those heads are known to flow at .700, up to .900 valve lift help
Are they anywhere close to the standard Koffel prepared ported B1 heads? help
Thanks in advance for all your help on these up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)