My 16Z stage 1 has the center air dam and the 2 side ones.

 

The two stage 1's I looked at were A8's. Is yours a A8 or M7?

My understanding on the center air dam, along with the two side air dams, is there to reduce the amount of air flowing under the car, by directing it outward, to the sides of the car, to lower aero drag.

GM has been using air dams on all their cars for decade to improve the aerodynamics to improve gas mileage.

I don't believe it's purpose has anything to do with engine cooling. For example the C5 was a 100% bottom feeder and had the full width air dam. Then the C6 was a combination front and bottom feeder, and had the full width air dam. The C6 Z51 was a combination front and bottom air feeder and had the full width air dam, but the C6 Z51 did not employ the air deflectors that are mounted on the lower control arms, that both the C7 Z51 and the C7 Z06 has. Then the C6 Z06/ZR1/GS were 100% front feeders and they had the full width air dam, but they did not employ the air deflectors either.

Since the C7 Z51 has the air deflectors(and does not have the center air dam that blocks air to the air deflectors) and since the C7 Z06 also has the air deflectors, then it makes sense to me, that the C7 Z06 would also not have the center air dam, as it would prevent air flowing under the nose of the car from hitting the air deflectors, that are there to help cool the brake rotors.

 

That's interesting. Is your Stage 1 an A8 or M7?

 

My Z is an A8
I'm going to look under my car and see if the Auto trans cooler is exposed after that air dam, if it is it may be there to deflect debri from hitting the cooler.

 

Topics like this come up quite often when there are different configurations. I just wish GM would publicly respond to these kinds of posts and tell us what the correct configuration is, and the reason(it wouldn't hurt them to tell us, and they wouldn't be revealing any secrets to Ford (LOL).

 

I have an A8 also.
The cooler is above the shroud where the air dam is mounted. It is not exposed.

 

Would you check the list(that is on a sticker attached to your car, and not the window sticker) of RPO's that your car is equipped with and see if RPO Z52 is included?

 

Would you check the list(that is on a sticker attached to your car, and not the window sticker) of RPO's that your car is equipped with and see if RPO Z52 is included?

 

I can't find that sticker. Where should it be?

 

If you received the clear rear wickerbill than that is stage three and it should have a cfv front splitter. Unless Dealer made a mistake and added someone else's wickerbill to your car!

 

Where? X2

 

Should be in your glove box. Either stuck to outside left edge or inside top! Can't remember

 

Rear compartment under the carpet, next to battery. (Was in glove box on the C6.)

 

On the C6 it was on the glovebox door, but I think they moved it on the C7.

I remember someone posting the location on the C7 but for the life of me, I can't remember where.

EDIT: Thanks CaryBob for the location of the RPO list.

 

In rear, under the carpet, next to battery. A complete list of all RPO codes is in the back pages of the Order Guide (downloadable from the sticky in the C7 forum.)

 

yes Z52
which is dry sump

 

Now look at your PDI form, in the upper right hand corner and read the box labeled

"Special Inspection Items"

You will see where it says.....

" EXTERIOR-(RPO Z52) install the additional air deflector on the lower control arms. DO NOT install center lower air dam on vehicles with the Z52 option."

It's pretty clear that anyone with a C7 Z06(all of them are Z52's) that has the center air dam installed, shouldn't have, as the PDI was not performed correctly.

 

I don't have the PDI form but I will take off the center air dam.
Thanks

found the PDI form online and this is whats in the upper corner

Special Inspection Items
Note – The vehicle may come with a set of metal rings for additional front brake rotor cooling during competitive driving events. They should only be installed by the customer at a Track or Competitive Driving events & MUST be removed after the event. Do not install the rings during PDI. Refer to Owner’s Manual Driving & Operating additional information.
Initial Inspection – Remove the shipping cover for inspection. The cover should be reinstalled to protect the vehicle during storage. Upon customer delivery, fold and offer to the customer.
Exterior – (RPO Z52) Install the additional air deflectors on the lower control arms. DO NOT install a center lower air dam on vehicles with the Z52 RPO
NEW Exterior – Please use caution when drilling holes for the (RPO CFZ or CFV) rocker moldings on automatic transmission equipped Z06/Z07s. Refer to Global Connect message G 0000211605
Exterior – (RPO CFZ, PERFORMANCE PACKAGE- CARBON FIBER) DO NOT install the larger front end caps for the front fascia’s lower splitter and the clear center bridge for the rear spoiler. These parts are intended for track events only and should be installed by the customer.
Exterior – (RPOs CFZ and CFV) Install front fascia splitter, rocker moldings and rear spoiler end wicker bills.

 

Took it off today

Thanks