speedz06

I would love to open this up I think I can probably figure it out but I'm hoping that you guys might have some pictures of your own work or maybe a write-up someone did in the past.

MTPZ06

Dang man, what happened to your paint?

As for the direct airflow to the intake, you may create MAF turbulence issues if you're on stock tune.

jayyyw

It is actually “open” but not much. You can cut into it with an angle grinder as behind that little section of plastic is aluminum.

Unreal

Opening it will create more issues than it helps.

whatcop?

Look up my thread which I think is called NACA duct is cut open. Don't do it unless you are speed density tuned.

meinersk

I drilled a few holes in it to let some air into engine bay....something about creating more lift on the car at high speeds is the reason it closed...

Bgreenard

Correct, that scoop is for high speed stability not for the engine.

dkz

I have mine opened up but not all the way. I grinded off the black plastic material but left the actual bumper alone. I'm still on stock intake and use a beehive.

MickVette

I have a fully opened NACA duct. Unfortunately, I did not take pictures of the process but do have a few of the supporting mods pictured. As mentioned opening the NACA duct will amplify surge at every speed and will require more tuning or switch to speed density. I opted for a ton more tuning. I also opened the lower portion and sealed the air box to avoid over pressure under the hood. The engine must eat the air as it has no where else to go now. Tested to 164.47mph in the 1/2 mile.

Unrestricted NACA duct:
https://www.corvetteforum.com/g/picture/8421367

More than the NACA duct was opened here:
https://www.corvetteforum.com/g/picture/8421377

The sealed air box:
https://www.corvetteforum.com/g/picture/8421380

At the same time I ported the intake. Before:
https://www.corvetteforum.com/g/picture/8421435

After (look at the far end of the runner to get an idea how much port work was done - this engine eats air):
https://www.corvetteforum.com/g/picture/8421439

speedz06

ha..sand and rocks plus high speeds...sandblasted

Michael_D

Vette Air scoop is a better option, IMHO.

speedz06

ok, I was thinking more about more airflow if I install larger heat exchanger that may block much of the grill area.

speedz06

what is a vette air scoop?

speedz06

very cool. I have to get to one of the half mile events sometime too

MTPZ06

It's an air intake duct that directs air from the bumper opening up into the air intake region.

Tahoe

all links show repeated same series of pics......wish you had more detail on scoop/induction tube/air box & how you opened duct
My 2011 G.S. has tube from bumper scoop to stock air filter. My induction tube is not air tight(uses fasteners)
AHR headers/ AHR X-pipe/bi-mode mufflers/ Redline Performance tune/430 RWHP/ 11.8 sec @ 116 mph
Nice work on your ZO6 Mr. Procovich

Tahoe

any pics on that scoop? is there a website that shows one? where did you find that insulation material?

MTPZ06

Vette Air:


Pulls air from here:


Directs it to intake here:


IIRC Southern Car Parts is a dealer of them.

Tahoe

thank you

Tahoe

Did U experience any driveability issues, surging etc. after opening up that NACA duct? If that NACA duct (nose scoop) is for high speed stability did U notice any changes @ 165 mph?