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Cfm ?

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1K views 5 replies 5 participants last post by  wagspe208 
#1 ·
Can having too big of runners/heads for the selected valvetrain actually be detrimental or is it only a waste of money?
 
#5 · (Edited)
I agree with what these guys are telling you, BUT--- need to know the intended application & cid. If this is a jetboat, you flash right through most of that midrange that many get hung up on and are building for one specific rpm, which is usually on up the scale- and with the common cid of engines today often being over 500 inch. Makes it a little harder to "over head" the engine.

Car or v-drive accelerating through the gears, or a heavy cruiser- maybe an outdrive-- sure it becomes more of a problem then.


Application. JMO though.
 
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