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

Brake boost reduction

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Old Oct 23, 2022 | 07:37 PM
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Default Brake boost reduction

With a BBK and aggressive high Cf pads, brake pedal is much more sensitive than my foot, so modulation is not very precise. So I was thinking, are there any brake boosters from certain years which would reduce the boost? I'd like 20%-30% reduction, but I'm open to ideas. Otherwise it's a Tilton pedal box and manual brakes... open to suggestions with that also.

Wilwood FNSL6R 14.00x1.10 front, FNSL4R 12.88x1.10 rear with DRP bias spring, 1986 Corvette, in case it helps.

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Old Oct 23, 2022 | 08:00 PM
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Hmmm… is it possible to adjust the amount of vacuum (regulator) to the booster to affect this? Maybe I’m thinking about it all wrong but just a thought.
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Old Oct 23, 2022 | 09:16 PM
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Have you tried different brake pad compounds or different master cylinder bores to see what works best for you? On my C4 Autocross car I am running the Hawk HP Plus pads with Baer Six Piston calipers on all four corners still using the factory ABS and the original brake booster. Also, I am using a Baer Master Cylinder with a 15/16" bore. Stock is a 7/8" bore.
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Old Oct 23, 2022 | 09:17 PM
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Booster really doesn't create brake feel it, it reduces overall effort. IMO you need a master cylinder designed for the brake system you installed.
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