how much vaccum ?
Thread Starter
Instructor
Joined: Oct 2006
Posts: 181
Likes: 0
From: Des moines Iowa
how much vaccum ?
How much vaccum should I have while idiling? 290hp 350 Chevrolet crate engine. Edelbrock 600cfm, weiand intake, cam specs-222/222 and .450 intake / .460 exhaust.
Would the cam make the vaccum gauge needle move any?
Would the cam make the vaccum gauge needle move any?
Pro
Joined: Jul 2000
Posts: 590
Likes: 1
From: Suffolk New York
It all depends on the cams LSA. Yes the cam is a big factor in vacuum.
I have a huge solid lifter cam and I have little vacuum, I had to use a vacuum canister to store some vacuum so my power brakes could still work. I get a few pumps of the brakes while the engine is at idle.
You can probably look up specs for a stock cam and compare to what you have.
I have a huge solid lifter cam and I have little vacuum, I had to use a vacuum canister to store some vacuum so my power brakes could still work. I get a few pumps of the brakes while the engine is at idle.
You can probably look up specs for a stock cam and compare to what you have.
