I'm wondering with the Advent of all the 520" plus cube strokers why B1's are not more popular?

By it's design, the B1 corrects the biggest inherent "flaw" of the late 50's big block Mopar architecture...it moves the valve centerline (and I believe also improves the wedge angles) to the bore centers which gives both valves a much better flow margin around the outside of the bores. In many ways the B1 is essentially a "Race W'" small block scaled up to a big block head; And when they first arrived they were never really popular on the street, mainly becuase it meant custom piston notches and the ports were really too big and required too much RPM for a 440-470" street motor. But now with everyone building 511-572" inch motors the B1 seems like a natural. Of course you need the billet block rocker supports and custom offset rockers...but you need offset rockers on any of the big flow heads now anyway?

I'm hoping Scott Koffel might get wind of this,,,to me it just seems like the marketing opportunity/cost to do a B1 really isn't THAT much more if someone is considering a roller cammed 511+ inch big block. the only other "drawback" to the B1 for the street is the race oriented flow window which relies on high lifts but I'm sure there are port window that could be developed to maximize the cfm in more streetable (sub .750" lift) ranges and milder spring rates.

I'm thinking about a B1 572 with a streetable 2500-6800 rpm powerband, 800 horse with enough torque at any RPM to rotate the earth.