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Old 12-20-2021, 07:53 AM   #1
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CTS4V Blackwing Rear Brake Scoops

I debated where to post this, but this is likely only something that only someone who tracks their car would care about...

I was watching the video review linked below of the CTS4V Blackwing and at the 7:59 mark, it shows the rear suspension with what appear to be scoops for the rear brakes. Given that I believe the suspension is relatively unchanged from the first gen Alpha platform, I wonder if these would fit the Camaro? Granted, overheating rear brakes isn't a big problem with the Camaro, but extra cooling never hurts.

Just planting the seed for now. I'll dig into it a bit further as I have time, unless someone else beats me to it. So far, I've learned they only come on cars without the carbon-ceramic rotors.



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Old 12-20-2021, 09:33 AM   #2
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I have a CT4-V Blackwing (which is not available with carbon ceramic brakes which are an option on the CT5-V Blackwing) as well as my ZLE. I can take some pics of them, scan the installation sheet and give any dimensions etc. anyone would like. They come in the trunk. They are not installed on the car from the factory.
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Old 12-20-2021, 10:20 AM   #3
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Quote:
Originally Posted by ZL1 1LE View Post
I have a CT4-V Blackwing (which is not available with carbon ceramic brakes which are an option on the CT5-V Blackwing) as well as my ZLE. I can take some pics of them, scan the installation sheet and give any dimensions etc. anyone would like. They come in the trunk. They are not installed on the car from the factory.
That would be awesome! Thanks! There should even be a PN on the bag they come in so if you can find that too, that would be greatly appreciated.

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Old 12-20-2021, 11:16 AM   #4
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Here are the PN's that I could find. The rears appear to use M5 screws. Don't think the Camaro has the tapped holes for them

GM 84946132 - Rear Right
GM 84946131 - Rear Left
GM 11548166 - Rear Bolts (Qty 6 needed)
GM 84965151 - Rear Lower Trailing Arm
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Old 12-20-2021, 11:23 AM   #5
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Quote:
Originally Posted by Katech_Zach View Post
Here are the PN's that I could find. The rears appear to use M5 screws. Don't think the Camaro has the tapped holes for them

GM 84946132 - Rear Right
GM 84946131 - Rear Left
GM 11548166 - Rear Bolts (Qty 6 needed)
GM 84965151 - Rear Lower Trailing Arm
is that a stamped arm? Could be as easy as a drill and rivnut to get the job done.
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Old 12-20-2021, 11:25 AM   #6
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There are also larger scoops at the front. They are different than the big non-SS 1LE scoops.
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Old 12-20-2021, 11:25 AM   #7
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Quote:
Originally Posted by davidwarren View Post
is that a stamped arm? Could be as easy as a drill and rivnut to get the job done.
Factory arm is stamped. The PN i provided is the OEM CT4 arm that should already have that done. For us, probably easier to just drill/rivet like you said
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Old 12-20-2021, 11:31 AM   #8
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Quote:
Originally Posted by Katech_Zach View Post
Here are the PN's that I could find. The rears appear to use M5 screws. Don't think the Camaro has the tapped holes for them

GM 84946132 - Rear Right
GM 84946131 - Rear Left
GM 11548166 - Rear Bolts (Qty 6 needed)
GM 84965151 - Rear Lower Trailing Arm
Perfect! Again, thanks so much!

Quote:
Originally Posted by Katech_Zach View Post
Factory arm is stamped. The PN i provided is the OEM CT4 arm that should already have that done. For us, probably easier to just drill/rivet like you said
Yeah, should be an easy install with some minor mods. In any case, they're less than $15 each, so even if they absolutely don't fit, it's not a huge cash outlay.

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Old 12-20-2021, 12:03 PM   #9
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Video of the CT5 front brake scoops. Both the CT4 and CT5 front scoops look different than each other and they both appear different than anything available on a Camaro

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Old 12-20-2021, 12:20 PM   #10
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Quote:
Originally Posted by cdb95z28 View Post
Video of the CT5 front brake scoops. Both the CT4 and CT5 front scoops look different than each other and they both appear different than anything available on a Camaro


The fronts do appear to closer in size to the Camaro track deflectors, but much more heavily sculpted. Might be worth picking up a set for side by side comparison.



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Old 12-20-2021, 07:45 PM   #11
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Quote:
Originally Posted by ZL1 1LE View Post
I have a CT4-V Blackwing (which is not available with carbon ceramic brakes which are an option on the CT5-V Blackwing) as well as my ZLE. I can take some pics of them, scan the installation sheet and give any dimensions etc. anyone would like. They come in the trunk. They are not installed on the car from the factory.
My apology for the misinformation. The rear brake scoops must be installed from the factory. It’s the fronts that were delivered in the trunk.
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Old 12-21-2021, 11:16 AM   #12
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It looks like the CT4-V Blackwing's rear calipers (pictured below) are a little over 135° away from the Camaro's placement (with the parking brake caliper in the same location as the Camaro's regular caliper) and the CT5-V Blackwing's are a little over 45° away so idk if the airflow will end up in the right place on the Camaro but some temperature paint or stickers on the calipers with a before/after test could answer that question.
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Old 12-21-2021, 05:36 PM   #13
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Quote:
Originally Posted by cdb95z28 View Post
Video of the CT5 front brake scoops. Both the CT4 and CT5 front scoops look different than each other and they both appear different than anything available on a Camaro


I can't believe he is jacking the car from the aluminum cradle.
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Old 12-22-2021, 06:48 PM   #14
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Quote:
Originally Posted by ZL1 1LE View Post
My apology for the misinformation. The rear brake scoops must be installed from the factory. It’s the fronts that were delivered in the trunk.
I'm interested in looking at the front deflectors, can you scan installation instructions and take some pics of the items?

thx in advance
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