How much vacume do you need to run power brakes on the street?

Also do you need more vacume when u upgrade to C5 set up?

 

My guess is 10-14", and stock vacuum is fine with C5s. If you need more, go with a vacuum pump and reservoir.

Ed

 

those vacume pumps aren't a big deal right? I just don't know much about them. Do I just hook up a vacume line to it and thats pretty much the gist of it, and it stores up vacume?

I might have to get one with my crzy cam i am running on the street.

 

A vacuum pump would be either belt driven or electric. You'd run the brake booster line to it instead of the manifold.

 

Vacuum pumps are quite pricey, close to $300 on Summitracing.com. I got a used one on eBay for $150 (an alternate place to look).

My suggestion, having done it, would be, don't buy one before you get the engine running. Build the engine and hook up a vacuum gauge. Judging by the results, then look to see if you need a pump or if you can get buy with a resevoir.

 

allright, thanks guys. I will wait

 

11" of vacuum is very borderline. It could take time to replenish the vacuum if you are driving in stop/go traffic. But I agree with Stekman, run the car first and then decide if you need a vacuum pump.

 

Ok, thanks again. I would be in light traffic every now and then. So the vacume pump might be needed. And def an electric one. i am going out of my way to kepp under the hood looking clean, so no more pullies. 300 bucks doens't sound too bad i guess. I do need brakes, hehe.

 

In the event you do need to install a pump, Stainless Steel Brake Corp (SSBC) makes a decent pump for about $275. I just installed one on my buddy's car.

Good Luck.

 

thx for the heads up. I hear from my builder that I should be fine with a resivoir. (sp)