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Howard attaches the new longer brake line that came with the Chevy Performance kit. Longer lines were needed because the bigger brakes are moved upward and outward quite a bit over the stock brakes.
The new Chevy Performance caliper on top is much bigger than the stock Z51 caliper on the bottom. You can see that the Chevy Performance caliper is quite a bit bigger and has six pistons compared to the 4 pistons for the Z51 caliper.
You can clearly see how much bigger the Chevy Performance caliper and brake pads are compared to the Z51 part when you flip the calipers upside down. The new pads are about 50% bigger in surface area!
The size difference between the Chevy Performance rotor on the left vs the stock Z51 rotor on the right is very obvious when they are laid out side by side. Also, note that the Z51 rotor is a one-piece solid casting.
Once everything is ready, the new brake parts bolt right in like they were made to; well you figure they were made to by the car’s maker!
13 comments
Thank you for the video and article regarding the Stingray upgrades. I have been looking at the Chevy brake upgrade but was hesitant due to Chevy performance article stating that the brake upgrade was not compatible with the z51 stock wheels for clearance. I saw your car in the video and read the article that you used the stock wheels. Therefore I wanted to ask if you had any trouble with the stock z51 wheels fitting the upgrade? Was a spacer needed? Thank you for any help or detailed pictures regarding brake clearance with stock z51 wheels.
Yes, we had to run a 5mm spacer to clear the calipers in the front.
What is the weight difference between the OEM z51 brakes and the upgrading unots?
They are slightly heavier. A couple of pounds I belive.
They are slightly heavier. A couple of pounds I believe.
Which are you referring to as being heavier, the OEM units or the upgraded units? Do you know the actual weight of the upgraded calipers and rotors?
can you put the upgrade on a z51 stingray
Yes, this is a Z51 and it fit fine.
Can you upgrade base stingray to big brake kit
Yes, all the parts apply.
What is the GM part number for this kit? My local GM Performance dealer was quite confused! The entire C7 project series was amazing and gave me inspiration to upgrade my 2019 Z51.
Front kit: 23386144
Rear kit: 23386145
ST Suspensions spacers for front wheels (5mm): 56055021
So you did the video showing the b4 the Z51 brake upgrade. What about the after video (I can’t seem to find it). Also it appears that there are disclaimers for using this upgrade kit and it appears the spacer is not available.
Please advise.
Thanks in advance..