Vacuum canister
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Joined: Oct 2008
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From: Nantucket MA
Vacuum canister
As we all know, with a big cam comes vacuum loss. Has anyone tried Comp cams vacuum canister to solve this issue? Does it work well? Would you prefer a vacuum assist kit with the compressor and what not over just the canister set up? I really would like to keep this build simple and yet still have everything thing functioning properly.
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Joined: Jan 2006
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From: Crossville TN
You have a '78 car and vacuum only operates the headlights and the HVAC ductwork systems. You should not have a problem with those systems, as long as you have about 10" Hg vacuum level (with no significant leakages in that system). A normal (stock) Chevy V8 engine will produce 17-21" Hg, depending on normal wear.
You would need an extremely aggressive cam to prevent adequate function of the headlights and HVAC systems. And, having to resort to an additional vacuum pump to supply adequate vacuum for those systems would be a PITA.
You would need an extremely aggressive cam to prevent adequate function of the headlights and HVAC systems. And, having to resort to an additional vacuum pump to supply adequate vacuum for those systems would be a PITA.
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Joined: Oct 2008
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From: Nantucket MA
And that is exactly what I have. I am building a 350 with a Thumpr cam (very aggressive) I just want to be sure I can get everything together correctly all at once, and cover all my bases. But my question is, will a Comp vacuum canister suffice or will I need a vacuum assist kit with the 12 volt compressor and so on? Has anyone used the canister set up and is it as effective as the entire vacuum assist kit?
