plenum volume

[bruce plecan]

ref Paul Tholey:
   IMHO, for a SBC runners should be thought of more in
this manner.
   Large cross sectional area runners are for better cylinder filling at 
       high rpm.
   Shorter runners enable a motor to rev quicker.
   Long runners help to minimize reversion.  Reversion
   can truely hinder MAF readings.
(needless to stay the inverse apply)
So a vehicle with a wide ratio gear box, and lower
   (numerically) gears would need to min reversion
   (long runners), and would not need to change rpm
   quickly.
Part of the reasoning for this is the Can-Am big blocks 
of the mid/late 60's, really long IR with huge cross-
sectional areas.  
  It sorta follows the flow, of what most people do/think
but I like my tweaks.
  Bruce
Any others with other thoughts?.