Did you tie in to the existing vacuum ball thingy?? On my camaro, I have this vacuum ball(I guess) it is a black plastic ball that sits underneath where the charcoal canister would sit on the driver's side. Anyway, I have one of those Comp Cams vacuum reserve canisters. I ran the line from the back of the carb(that would normally go to the brake booster) and ran it into the canister. Then, from the canister, I went out to the booster. I am trying to decide if I should add a tee fitting, and run lines to the factory vacuum ball. I assume that I need to have reserve because of the cam that I am running(Edelbrock Performer RPM .488/.510 lift and 234/244 duration with a 112 LSA??) Just curious to see what you guys did. Thanks for any input.

 

That cam really should'nt need a vac can, but better to be safe than sorry. Cant relly help you out since mine does'nt have the emission stuff, but trying to visualize the stock set-ups and how mines run to help ya out lol.

I came off the manifold to the can, then ran it into the booster. So if that cannon ball needs vaccum, for no more than it's really pulling I see no reason why you could'nt run a T with the right size fittings on the "outlet"side of the vac can so the cannon ball can get a little vaccum too.

 

So you don't think that I really even need the vacuum reserve canister, huh? Supposedly, and I can't remember where I heard/read it, but the RPM package only gives like 10-12 inches of vacuum at idle, and that it might not be enough to run power brakes. Trying to remember, but they said that by adding the reserve, you don't increase the amount of vacuum to the accessories, but you increase the volume of vacuum to supply them.

 

It would be a simple test to drive the car and see how the brakes respond before hooking up the can. My cam is a tad beefier than your and I have brakes without the canister, but I can only get about 3 good pumps of the brakes before I get stiff pedal, so I hooked the can back up and have all the brakes I want-after I let it "warm up" a little-it needs to build vaccum first. And your right, all the canister does is store vaccum so you have a bigger amount of volume to extract it from when you need to run your brakes as the booster drains vaccum very quickly. Regardless, if you have it, install it. Better to know you vaccum in reserve for that instance you really need to have all the brakes you can get.

 

Well, that's kinda what I figured too, but I'd rather be safe than sorry. Besides, the only vacuum operated thing on the car now will be the brake booster so I don't think that I will have any problems. Thanks for the input though!