C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1991 brake upgrade

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Old Jul 19, 2020 | 01:16 PM
  #21  
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Originally Posted by JoeNova
Supposedly the C5 brakes will fit in 17" A-mold wheels. No personal experience, but that is the claim.
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Old Jul 19, 2020 | 01:34 PM
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Originally Posted by TA
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the C6 Z51 package fits under the 5 spoke A-mold wheels as well.
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Old Jul 19, 2020 | 01:37 PM
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Originally Posted by littleredcorvette88
where did you get the calipers? I have found a few but either the corvette logo is paonted all red, or the bracket is another color from the caliper etc.
You can buy factory C5 Z06 brakes which were red from the factory. Anything that has the lettering painted has been refinished poorly as they were to lazy to take care of the letters.

My personal preference is to leave the bracket black, as it frames the caliper.
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Last edited by ChumpVette; Jul 19, 2020 at 01:42 PM.
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Old Jul 21, 2020 | 12:56 PM
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Originally Posted by IBVETN2
If you apply the brakes as hard as you can now, does the abs kick in? If so then bigger brakes will not stop you any quicker, just kick in the abs sooner. You can only stop as quick as the tire grip will allow. Bigger brakes are better at dissipating heat, but unless you track the car for long runs you won’t build up that much heat. If I was you I would replace any lines you think might be bad. Install the stainless braided lines. If you want the cool look factor, then either paint or powder coat the calipers. Put some cadmium plated slotted rotors on it and some decent pads. If it’s not already J55 you could ad that very easily. The DRM bias spring will put a little more rear brake in it, so that could help you some too.
This is 100% on target. I had a fairly strong 396 in my 96 and a set of 6-piston Wilwoods. I would only use those brakes on track. For street and autocross use I stuck with the stock J55 setup, good brake lines, goof fluid (Motul 600 or 660), and decent (not even great) pads. They were more than adequate. This was a car that ran with a stock C6 Z06 in terms of acceleration, and I autocrossed it on either BFG Rival S or Hoosier A7s, both in 315 widths. IOW, lots of grip and plenty of speed to dissipate between corners. If you don't track the car (meaning lapping sessions on a road course with numerous consecutive laps), you really don't need the additional heat transfer capacity of fancy big brakes.
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Old Jul 21, 2020 | 10:16 PM
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Exactly what IBVETN2 and MattMiller said. And I will add, the correct brake pad is important. Im familiar with different Hawk Pads so Id recommend the HPS or if want a little more aggressive the Street/Race Pads. I dont run a bias spring to get more rear braking. Id rather not chance locking up my rear wheels coming down from 100+ mph into a corner.
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