Vacuum and brakes - Team Camaro Tech
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post #1 of 7 (permalink) Old Sep 8th, 18, 11:15 AM Thread Starter
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Vacuum and brakes

I searched this a little and while i saw the question listed before here and elsewhere i never saw a thread with a resolution listed. I am getting to the front of my car and beginning to accumulate parts. My rear came with aWilwood 4 piston setup. I intend to get a 6 piston on the front. Wilwood told me that if i run a minimum of 18 vac at idle and a dual 8 or larger booster i am good with their 1 bore mc. 18 seems to be the hairy edge of what the LS pulls and more than what a 525 pulls so i am curious how you guys have resolved this. In an older thread i think i read that John doesnt use power brakes and i am curious if thats so and what bore mc is used with that setup. I had been thinking along the lines of hydroboost till i ran across a thread a while back noting that setup wasnt the best for autocross. Can manual be a rational setup?

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post #2 of 7 (permalink) Old Sep 8th, 18, 12:20 PM
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Re: Vacuum and brakes

I do not run a booster with my wilwoods I run six piston and four piston with the 15/16 master cylinder as recommended by Wilwood.

Cars stop great.

If you do use a booster for LS3/525 has plenty vacuum.

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post #3 of 7 (permalink) Old Sep 8th, 18, 03:23 PM Thread Starter
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Re: Vacuum and brakes

John, do you have an iron man conversion on your right leg or is it reasonable? If your friends drove one would it be a nasty surprise? Gotta say, its tempting.

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post #4 of 7 (permalink) Old Sep 8th, 18, 04:06 PM
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I have driven, and installed a Wilwood camaro without a booster. No issues with stopping, and not hard to push the pedal.

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post #5 of 7 (permalink) Old Sep 8th, 18, 04:52 PM
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Re: Vacuum and brakes

Wilwoods are designed to work without a booster.

Pedal pressure is about the same as stock power brakes

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post #6 of 7 (permalink) Old Sep 13th, 18, 07:40 PM Thread Starter
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Re: Vacuum and brakes

One last subjective question on this topic for you two. Wilwood has said to use a 15/16 unless i want more feel, then use a 7/8. Nothing like a blind choce. How much is too much?

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post #7 of 7 (permalink) Old Sep 14th, 18, 03:09 PM
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Re: Vacuum and brakes

If you end up going with power brakes, go with a 9" dual diaphragm. Nice fit and has more assist than the larger booster. I have C6 brakes from Kore3. I was told to use a 15/16" MC. I only have 14" of vacuum at idle. I have a nice pedal and no issues. As stated above, you should be fine...

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