Found a small shroud in the passenger side intake TB port

[Tech]

I was out looking over my new purchase and found this little shroud just under the butterfly.

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It is a 94 7.4 from California in a K2500
First it bothers me that it is only on the passenger side.
Did the other one get ingested?
Did it ever have a second one?
Why would they block so much of the port? and only on one side of a dual plane manifold.

The second thing that I found was this huge shroud inside the air cleaner.

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How is this thing breathing at all
Delete, shorten or blend it in. I am thinking delete and blend.

I think that it is probably killing flow from the nice contour on the Banks lid.

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Anyone have a good reason to not remove these insults to a big block.
I really don't like having an imbalanced intake manifold.
FWIW it throws a code 32 at wide open throttle. EGR problem

 

[Black_cirrus]

My 95 7.4 I removed the shield had a couple spot welds wasn't to hard, I think its a noise abatement item. I flipped the air cleaner lid also at the urging of a coworker. I'll have to look down the TB to see if there is anything down under the butterfly. Not tonight.

 

[Tech]

Noise abatement
It's a big block with headers and a 3" exhaust.
Unless it sounds like a siren and has flashing blue lights it shouldn't be a problem.
I'll take the air flow.

 

[Knuckle Dragger]

It's not noise abatement, it directs the airflow straight down the throttle so the spray pattern on the fuel patern from the injectors and the fuel atomizes correctly.

 

[Tech]

A shot from the top

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It looks a little crowded in there to call it an enhancement
were looking for 6.28 sq in of volume just to equal what can get past the butterflies.

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This definitely looks a little tight.

 

[Tech]

I deleted the baffle,
plugged the three holes where the spot welds tore,
closed the gap on the lower flange,
Faired in the wall to the lower flange
and radiused the sharp edge in front of the drivers side throttle body. JB Weld is my friend.
Now it looks like it should flow some air.
The good news is that my code 32 appears to be gone and the engine runs smoother.

 

[someotherguy]

Everybody knows automotive industry engineers are stupid, anyway.

Richard

 

[thunderstruck]

It's not noise abatement, it directs the airflow straight down the throttle so the spray pattern on the fuel patern from the injectors and the fuel atomizes correctly.

This.

But you know, if you can get the air cleaner to flow 1000cfm, the throttle body and heads will magically flow that much too. /s


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