Designed induction restriction

[dicer]

I would like to see if anyone can make some sense of this.

A 1996 Ford F250 with a 460 Engine.
Running from the airfilter is 2 large rubber hoses, they come to a plastic junction, that has a very small hole maybe an inch or so diameter that connect from each hose, that restrict the airflow, then 2 large hoses come off the other side that then feed the air to the throttle body.
This is so counter to any logic as far as getting airflow into the engine. Does anyone know why this was done? This is stock factory on all these, and I think many more models as well. I would think this would help to decrease fuel economy as well. Any ideas? Thanks.

 

[Burnit]

I forgot can you give me the RPM limit as well.

Thanks

 

[NormPeterson]

The Ford 460 has the following dimensions (it's a pretty big lump):

4.360" bore
3.850" stroke
4.900" bore spacing
6.605" rods
10.322" deck height
1.756" piston compression height
3.000" main journals
2.500" rod journals

(2008 FRPP catalog, which I happened to have open for an unrelated reason)


Norm