Originally Posted by tornado-tech
The XE274 and vortecs heads will be fine for a daily driver in a 400. The truck in my avatar was my daily driver with a 406, Crane 284 Energizer cam, S/R Torquer heads, 670 Avenger, Performer RPM intake and a 2200 stall.
i was leaning toward this one too... the XE274 is a nice cam, but in a 355 or 383 it sounds really nice. in a 400, it is rather mellow... the bigger the air pump the more air it will take. the crane 284 would probably be a better choice... the XE274 would probably be better suited in a 383.