I've made 920 HP with a goof up single Dominator carb on a 4.495 bore with a 4.25 stroke crankshaft (13.5 to 1 compression)in a World iron block to be used as a bracket motor with a Koffel prepared B1 originals heads that flowed right at 430 CFM at .800 net lift.
I know other racers out here that have made over 1100 HP with B1 originals with a lot of other good parts shruggy
I have one set of B1 originals with Jesel 1.7 rockers that I'm going to use on a pump gas 572 C.I. KB aluminum wedge block and a set of B1-MC heads with either Jesels or T&D pair shaft rockers on a 555 C.I. Koleno block bracket motor build, I'm hoping for 1100+ HP with two Dominators and a sheet metal tunnel ram on that motor luck
I don't know anything about the B1-PSO heads, sorry blush

Last edited by Cab_Burge; 02/03/20 07:55 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)