Homepage Garage Wiki Register Social Groups Calendar Search Today's Posts Mark Forums Read
#Camaro6
Go Back   CAMARO6 > Technical Camaro Topics > Suspension | Brakes | Chassis


AWE Tuning


Post Reply
 
Thread Tools
Old 03-09-2023, 06:39 PM   #1
Bumbleboy92
Long hauler
 
Bumbleboy92's Avatar
 
Drives: 2022 Camaro 2SS 1LE
Join Date: Mar 2017
Location: Houston, TX
Posts: 1,616
Calipers / Rotors Size Chart

Name:  Caliper-Rotors.png
Views: 1047
Size:  29.9 KB

Please let me know if there is an issue. I took these numbers from Chevy's press releases and measurements from RockAuto.

I updated the chart with the confusing 12.6" / 321x30 compatible Brembos. From my understanding, LT 1LE cars received 4-Piston Brembos as a part of the 1LE package but they were smaller than SS Brembos and fit the LT 12.6" / 321x30 rotor instead. I'm unsure if the late model LT 1LE cars followed suit or switched to the SS 4-Piston Brembo but this was when the 1LE package was released. I can attest to this as I have 12.6" OEM on my 2016 1LT and have 4-Piston Brembos that fit. Plus the part number for a LT 1LE rotor is 1771158 and the RockAuto specs list 12.6" / 321x30mm - Edit: I doubt they changed them since the LT1 is using the same size. Most likely the LT 1LE trims have been using 12.6" / 321x30mm since 2017 and the LT1 inherited them

For LT1, both PowerStop and RockAuto list 12.6" / 321x30mm as the only size for LT1 front rotors.

RIP factory optioning 6-Piston Brembo's on LT cars

Added the copper free rotor info

Added 5LQ information and some more brake options from packages
__________________
2022 2SS 1LE - Cold Air Inductions Elite Carbon CAI
2016 1LT v6
- Totaled
Happiness: Infinite


Last edited by Bumbleboy92; 01-26-2024 at 11:39 AM.
Bumbleboy92 is offline   Reply With Quote
Old 03-09-2023, 09:53 PM   #2
arpad_m


 
arpad_m's Avatar
 
Drives: 2018 Camaro 2SS A8
Join Date: Jul 2017
Location: East Tennessee
Posts: 11,570
Beautiful summary, thanks for the post
__________________
2018 Camaro 2SS ó G7E MX0 NPP F55 IO6
735 rwhp | 665 rwtq

Magnuson TVS 2300 80mm pulley | Kooks 1 7/8" LT headers | JRE smooth idle terminator cam | LT4 FS & injectors | TSP forged pistons & rods
JMS PowerMAX | DSX flex fuel kit | Roto-Fab CAI | Soler 95mm LT5 TB | 1LE wheels | 1LE brakes | BMR rear cradle lockout | JRE custom tune

1100 - 1/30/18 | 2000 - 1/31/18
3000 - 2/06/18 TPW 2/26/18
3400 - 2/19/18 | 3800 - 2/26/18
4300 - 2/27/18 | 4B00 - 3/01/18
4200 - 3/05/18 | 4800 - 3/14/18
5000 - 3/16/18 | 6000 - 3/19/18
arpad_m is offline   Reply With Quote
Old 03-09-2023, 09:56 PM   #3
SS_Don

 
SS_Don's Avatar
 
Drives: '22 Camaro 2SS
Join Date: Dec 2021
Location: Long Island, NY
Posts: 1,026
Nice chart. What year(s) is it for?
__________________
'22 2SS | Wild Cherry Tintcoat | Design Package 3 | NPP | MRC | A10 | NAV | Ceramic Coating | Full Frontal PPF | New Hood and Side Stripes | Michelin PS AS 4
Range AFM Disabler | Mishimoto Catch Can | Diode Dynamics side markers | Cold Air Inductions CAI | LLoyd Velourtex front/trunk mats with Camaro SS logo
ZL1addons Deluxe Rock Guards, Stealth Lift Pads, and Tow Hook | Escort MAXcam360c | Footwell Lighting | Banks gauges in ZZPerformance pillar pod | Paddle shifter extensions

SS_Don is offline   Reply With Quote
Old 03-09-2023, 11:26 PM   #4
Bumbleboy92
Long hauler
 
Bumbleboy92's Avatar
 
Drives: 2022 Camaro 2SS 1LE
Join Date: Mar 2017
Location: Houston, TX
Posts: 1,616
Quote:
Originally Posted by arpad_m View Post
Beautiful summary, thanks for the post
Quote:
Originally Posted by SS_Don View Post
Nice chart. What year(s) is it for?
Thanks!

2016 to current should be, I got the sizes off Chevy press releases then followed up with the thickness from RockAuto since RockAuto listed all rotors regardless of trim.
__________________
2022 2SS 1LE - Cold Air Inductions Elite Carbon CAI
2016 1LT v6
- Totaled
Happiness: Infinite

Bumbleboy92 is offline   Reply With Quote
Old 03-10-2023, 08:13 AM   #5
The Maverick
Somewhere in the Kalahari
 
The Maverick's Avatar
 
Drives: 2021/18 (de-fresh) 3LT RS
Join Date: Dec 2017
Location: California
Posts: 645
The 4-piston Brembos on the LT#'s were also part of RPO Y4Q, the Heavy-Duty Cooling and Braking Package. That option was dropped toward the end of the 2021 model year due to the copper brake pad issue with CA/WA. I snuck in just under the wire with my DEC 2020 manufactured 3LT.

An additional trivia note: Out of the 1,048 3LT's built during the 2021 model year, 196 included the Y4Q package.

Quote:
Originally Posted by Bumbleboy92 View Post
Updated the chart with the confusing 12.6" / 321x30 compatible Brembos. From my understanding, LT 1LE cars received 4-Piston Brembos as a part of the 1LE package but they were smaller than SS Brembos and fit the LT 12.6" / 321x30 rotor instead. I'm unsure if the late model LT 1LE cars followed suit or switched to the SS 4-Piston Brembo but this was when the 1LE package was released. I can attest to this as I have 12.6" OEM on my 2016 1LT and have 4-Piston Brembos that fit. Plus the part number for a LT 1LE rotor is 1771158 and the RockAuto specs list 12.6" / 321x30mm - Edit: I doubt they changed them since the LT1 is using the same size. Most likely the LT 1LE trims have been using 12.6" / 321x30 since 2017 and the LT1 inherited them
Next time I have a front wheel off I can take a measurement to confirm what was used for the Y4Q package in 2021 (same RPO as came with the 1LE/A1X, I believe) , but I think your conclusion that these remained the same is correct.
The Maverick is offline   Reply With Quote
Old 03-10-2023, 03:06 PM   #6
Bumbleboy92
Long hauler
 
Bumbleboy92's Avatar
 
Drives: 2022 Camaro 2SS 1LE
Join Date: Mar 2017
Location: Houston, TX
Posts: 1,616
Quote:
Originally Posted by The Maverick View Post
The 4-piston Brembos on the LT#'s were also part of RPO Y4Q, the Heavy-Duty Cooling and Braking Package. That option was dropped toward the end of the 2021 model year due to the copper brake pad issue with CA/WA. I snuck in just under the wire with my DEC 2020 manufactured 3LT.

An additional trivia note: Out of the 1,048 3LT's built during the 2021 model year, 196 included the Y4Q package.


Next time I have a front wheel off I can take a measurement to confirm what was used for the Y4Q package in 2021 (same RPO as came with the 1LE/A1X, I believe) , but I think your conclusion that these remained the same is correct.
I'm pretty sure the 4-Piston Brembos are still in production for LT cars, I see the Y4Q option in the current order guide, and on the Camaro builder online it makes you also add the RS package or 20" wheels to receive the 4-Piston Brembos alone. You can also select the Heavy-Duty Cooling and Brake Package separately which includes it but has the same constraint of RS package or 20" wheels. (See below)

Name:  Y4Q.jpg
Views: 3168
Size:  147.9 KB

Though the 6-Piston Brembo was removed as an option starting in 2023 for the LT trims.

Name:  Screenshot 2023-03-10 145628.jpg
Views: 3210
Size:  87.7 KB

That's the 2021 - 2022 - 2023 Camaro order guides, 5LQ is the 6-Piston Brembo upgrade and they removed the option from non-SS cars in the 2023 model. If anything, I'm at least glad they didn't remove the 4-Piston option since they've already phased out the 1LE and 6-Piston options for LTs.
__________________
2022 2SS 1LE - Cold Air Inductions Elite Carbon CAI
2016 1LT v6
- Totaled
Happiness: Infinite

Bumbleboy92 is offline   Reply With Quote
Old 03-10-2023, 08:42 PM   #7
The Maverick
Somewhere in the Kalahari
 
The Maverick's Avatar
 
Drives: 2021/18 (de-fresh) 3LT RS
Join Date: Dec 2017
Location: California
Posts: 645
Quote:
Originally Posted by Bumbleboy92 View Post
I'm pretty sure the 4-Piston Brembos are still in production for LT cars, I see the Y4Q option in the current order guide, and on the Camaro builder online it makes you also add the RS package or 20" wheels to receive the 4-Piston Brembos alone. You can also select the Heavy-Duty Cooling and Brake Package separately which includes it but has the same constraint of RS package or 20" wheels. (See below)
That's good to hear - I must have misremembered some of the details of the copper-free brakes boondoggle!

Although, looking at the NHTSA posting of the GM service bulletin on the copper brakes, it says there was no copper-free option for the Y4Q option package in model years 2021 and 2022 (see text on right half of page 2 and table at the bottom of page 3). So maybe rather than being discontinued, what news reports I was thinking of were "sorry buyers in CA and WA" and wherever brake pads including copper aren't permitted?

https://static.nhtsa.gov/odi/tsbs/20...ukwcEMWnJdKup3

And I just noticed the order guides you posted above indicate just that - not available in CA or WA. They originally looked microscopic on my phone but I was able to get them to zoom to a legible size.

Last edited by The Maverick; 03-10-2023 at 08:54 PM. Reason: Correcting page references
The Maverick is offline   Reply With Quote
Old 03-11-2023, 08:59 AM   #8
Sillysspeed
 
Drives: 98 Camaro
Join Date: Apr 2022
Location: MD
Posts: 274
Thanks for that chart. Now just wondering is there a 2-pc rotor available for the lt-1le and lt1 cars?
Sillysspeed is offline   Reply With Quote
Old 03-11-2023, 11:36 AM   #9
Bumbleboy92
Long hauler
 
Bumbleboy92's Avatar
 
Drives: 2022 Camaro 2SS 1LE
Join Date: Mar 2017
Location: Houston, TX
Posts: 1,616
Quote:
Originally Posted by The Maverick View Post
That's good to hear - I must have misremembered some of the details of the copper-free brakes boondoggle!

Although, looking at the NHTSA posting of the GM service bulletin on the copper brakes, it says there was no copper-free option for the Y4Q option package in model years 2021 and 2022 (see text on right half of page 2 and table at the bottom of page 3). So maybe rather than being discontinued, what news reports I was thinking of were "sorry buyers in CA and WA" and wherever brake pads including copper aren't permitted?

https://static.nhtsa.gov/odi/tsbs/20...ukwcEMWnJdKup3

And I just noticed the order guides you posted above indicate just that - not available in CA or WA. They originally looked microscopic on my phone but I was able to get them to zoom to a legible size.
I'll try to incorporate that into the chart!

Quote:
Originally Posted by Sillysspeed View Post
Thanks for that chart. Now just wondering is there a 2-pc rotor available for the lt-1le and lt1 cars?
I'm sure there are aftermarket rotors that will fit, I don't believe GM sells any OEM ones in the size. Though you should be able to upgrade your calipers and rotors to any of the OEM sizes listed without issue, would have to get the accompanying accessories (lines, bolts, etc.). The only restriction would be if you are running smaller wheels than OEM or aftermarket wheels for clearing the caliper
__________________
2022 2SS 1LE - Cold Air Inductions Elite Carbon CAI
2016 1LT v6
- Totaled
Happiness: Infinite

Bumbleboy92 is offline   Reply With Quote
Old 03-11-2023, 01:03 PM   #10
Sillysspeed
 
Drives: 98 Camaro
Join Date: Apr 2022
Location: MD
Posts: 274
Quote:
Originally Posted by Bumbleboy92 View Post
I'll try to incorporate that into the chart!



I'm sure there are aftermarket rotors that will fit, I don't believe GM sells any OEM ones in the size. Though you should be able to upgrade your calipers and rotors to any of the OEM sizes listed without issue, would have to get the accompanying accessories (lines, bolts, etc.). The only restriction would be if you are running smaller wheels than OEM or aftermarket wheels for clearing the caliper
Iíd like to keep the stock size rotors since I run 17ís up front at the track. Just wanted the lighter weight
Sillysspeed is offline   Reply With Quote
Old 03-12-2023, 03:06 AM   #11
The Maverick
Somewhere in the Kalahari
 
The Maverick's Avatar
 
Drives: 2021/18 (de-fresh) 3LT RS
Join Date: Dec 2017
Location: California
Posts: 645
Quote:
Originally Posted by Bumbleboy92 View Post
I'll try to incorporate that into the chart!
Looks good! To nail down the CA/WA issue, you might want to add "after December 2020" to the "not available" notes on the chart.
The Maverick is offline   Reply With Quote
Old 05-11-2023, 09:07 AM   #12
FJ4dan
 
Drives: 2019 1LT V6
Join Date: Apr 2023
Location: Napa, CA
Posts: 15
Which Brembro for J55 rotor front?

Trying to add brembro's to 2019 1LT without using SS rotors and thought this might be a good tread to ask. Like to keep it "stock" and lower cost. Wife is getting a bit tired of the camaro bills haha.

1. Have the GM 84636644 and 84636645 in the cart at rock auto for $400 total. just want to be sure they fit the 12.6 rotors?

2. Pads?

3. Are bolts different?

4. Lines different?

5. If I want to track if for fun a few times a year should I skip and get the SS setup with larger rotors or would I even notice the difference?

did a search here for brembros and came up empty. Is there a thread on this I missed.

Thanks so much for the help! Just got a 19 and super excited to improve it.
FJ4dan is offline   Reply With Quote
Old 05-13-2023, 04:29 PM   #13
Bumbleboy92
Long hauler
 
Bumbleboy92's Avatar
 
Drives: 2022 Camaro 2SS 1LE
Join Date: Mar 2017
Location: Houston, TX
Posts: 1,616
Quote:
Originally Posted by FJ4dan View Post
Trying to add brembro's to 2019 1LT without using SS rotors and thought this might be a good tread to ask. Like to keep it "stock" and lower cost. Wife is getting a bit tired of the camaro bills haha.

1. Have the GM 84636644 and 84636645 in the cart at rock auto for $400 total. just want to be sure they fit the 12.6 rotors?

2. Pads?

3. Are bolts different?

4. Lines different?

5. If I want to track if for fun a few times a year should I skip and get the SS setup with larger rotors or would I even notice the difference?

did a search here for brembros and came up empty. Is there a thread on this I missed.

Thanks so much for the help! Just got a 19 and super excited to improve it.
I don’t know about the PN but,

Pads you’ll have to buy since the OEM is a single piston and the Brembo is 4 Piston so you’ll have to buy the corresponding pads.

I believe the bolts can be reused from your original calipers but not entirely sure.

Lines I can’t speak on either unfortunately, when I swapped I had bought a pair of SS goodridge lines.

Imo, you won’t see a noticeable difference between 12.6” and 13.6” rotors for the LT vehicles. Same reason why LT’s don’t have the extra cooling like the SS
__________________
2022 2SS 1LE - Cold Air Inductions Elite Carbon CAI
2016 1LT v6
- Totaled
Happiness: Infinite


Last edited by Bumbleboy92; 05-16-2023 at 03:32 AM.
Bumbleboy92 is offline   Reply With Quote
Old 05-15-2023, 10:27 PM   #14
FJ4dan
 
Drives: 2019 1LT V6
Join Date: Apr 2023
Location: Napa, CA
Posts: 15
Quote:
Originally Posted by Bumbleboy92 View Post
I donít know about the PN but,

Pads youíll have to buy since the OEM is a single piston and the Brembo is 4 Piston so youíll have to buy the corresponding pads.

I believe the bolts can be reused from your original calipers but not entirely sure.

Lines I canít speak on either unfortunately, when I swapped I had bought a pair of SS goodridge lines.

Imo, you wonít see a noticeable difference between 12.6Ē and 13.6Ē rotors for the LT vehicles. Same reason why LTís donít have the extra cooling like the SS imo
thanks bubbleboy!

keep it simple sounds good.
FJ4dan is offline   Reply With Quote
 
Post Reply

Tags
brake, brembo, rotor

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 03:47 AM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.