Assuming the same cylinder head volume, I would ASSume no.. there is no such thing as too much flow.

Also, you have to take into account that the cylinder can still fill past BDC due to inertia..

 

Well some inertia but more to do with intake pulse tuning, 5psi of pressure is going to overcome the pressure of the piston coming up in the bore.

Bret

 

If the velocity gets too low, I'd think that would kinda kill any inertial effects.

Getting back to the original question, given a particular displacement and cam, of course there's going to be a point where additional head flow just doesn't help (or at least you reach a point of rapidly diminishing returns). At that point, you either throw some more cam at it and move the powerband up, or put some additional displacement under the heads to take advantage of the additional flow. Putting too much head on an engine is entirely possible, but I imagine that it's a lot less common than too much cam just because of the cost hit.

 

The 504 uses a 4.25 bore (relocated) in a tall deck rocket block (custom made head gaskets and spark plug relocation). Crank stroke is then 4.437" billet with a special counterweight locations. Titanium connecting rods were 6.1" center to center. Manley titanium valves 2.28/1.68..... valve lift ~.800.... you get the idea. Everything is
BIG... then again it needs to be. HP peak was at 8700 rpm.

-Mindgame

 

I have to find that link to that 9 sec NA LT1 video. I saw pics of it before the run and they didn't look like LT1/4 heads or AFR's.

BRB

LS1's server is taking a crap again so I can't search for it. I'll try tomorrow. sorry