BBM is working in collaboration with Blair Patrick to develop two new BBM High Riser cylinder head castings, as well as a dual plane 1x4 manifold with a 4150 carb flange with ports to fit the as cast heads. The ultra modern high velocity intake ports will be offered in two different castings. One with throat diameter for 2.09 valves, enabling 350+ cfm flow from a less than 170cc runner. This version will compliment the smaller bore FEs, and ultimate torque in 390 based strokers. The other High Riser casting will be for 2.19 and larger valves, 370-ish flow capability as-cast with proper prep, and plenty of material to port for the largest FE intake valves, if desired. The larger port will be around 190 cc. Both heads will feature raised floors as cast, but will have enough material to port match to OEM manifolds if desired. We plan to develop a 2x4 single plane manifold as well. Our plan is to continue to develop the wedge FE design, and bring ultimate wedge FE induction to the market.
Jay- I copied this from the old FE Forum.
