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LQ9 Brake Booster Question

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Old Jun 4, 2018 | 11:29 AM
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Default LQ9 Brake Booster Question

I have an LSX92mm Manifold on an LQ9 550hp Texas Speed Engine and a Wilwood Hyrdoboost Brake booster setup. I would like to switch to a Vacuum boost Brake system to get rid of some of the hoses under the hood. It looks like there is a vacuum port on the back of the LSX92 manifold that I assume is for vacuum brake booster. Can anyone confirm this is for brake booster?? How will switching from the Hydroboost to Vacuum brake booster effect performance??

Thank you,
Keith R
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Old Jun 4, 2018 | 03:05 PM
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Yes, the port on the rear of the intake manifold is for a vacuum brake booster. I don't know how it will affect performance going from hydro to vacuum brakes, however you shouldn't be accelerating while you are braking, so I imagine you won't notice a difference.
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Old Jun 4, 2018 | 03:52 PM
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Originally Posted by Flynman
How will switching from the Hydroboost to Vacuum brake booster effect performance??
That depends on the cam you're running, If it has plenty of vacuum at idle then you won't notice a lot of difference in braking performance.
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Old Jun 10, 2018 | 08:18 AM
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Thanks for the replies!!! Guess I will find out when I get it all back together!!!
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Old Jun 11, 2018 | 03:09 PM
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Most notice an improvement in braking with the hydroboost, so make sure you choose between better braking or less hoses..
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