400 block with 440 crank, 451ci, RPM heads with backcut intake valves, and factory cnc ridge blended in. No port work. 11.24 @ 119.3mph in the signature car, more to come hopefully in springtime.

I guess what I'm trying to say is, 400s and Edelbrock heads seem to work halfway decent with the right complement of stuff (and my stuff is, at best, maybe 70% "right" 'cause it isn't a pure drag car).

Intake runner volume is small for the cubic inch on most B/RB engines. It's both a blessing and a curse depending on how you look at it, however I think my engine will live longer with max hp rpm at 6250rpm rather than 7500rpm.

For big runner volume....we have the Hemi....