dial-a-flow the dial a f low opens up a new way of thinking when kt comes t o choosrng an intake manifold the key t o this new desrgn rs the specially des~gned plenum channber and flow control inserts simply stated the flow cor t r o linserts control the velocity volume and flow o f the gaslair m r x ture from ti3e plenum through the runners t o the lnrake parts there arl three basic inserts sfage i 1maxrrnurn velocity high torque factor s r c r 1t1 m i d rpm torque and horsepower range stage iii [maxtmurn rpm torque and horsepower rang staqe types are further erplarned in the rnantfold ...