Need more vacuum - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ssjones · 10-17-2006, 01:29 PM

Has anybody installed a vacuum assist that they would recommend and where did you purchase it? I need more vacuum to my brake booster now that I have installed a large cam.
Any suggestions would be greatly appreciated.

Thanks.

qksilver · 10-17-2006, 02:07 PM

another option is hydro boost setup off of a 1 ton or Astro van etc.
I don't know how much a vacuum assist costs but the hydro boost works great. Gives you better stopping power than using the orginal booster

*wolfthing2000* · 10-17-2006, 04:35 PM

Can you give more info on the hydro boost///???

zden · 10-17-2006, 05:40 PM

you can get a vacuum cannister from summit for $30 bucks. mine holds about 20" of vacuum all the time and they are very easy to install

qksilver · 10-17-2006, 05:43 PM

run a search, a couple of people here have done it

Rat72 · 10-20-2006, 01:46 AM

I've been wondering about the vacuum issues I have. I bought a K10 with a 454 that has a cam that the seller said was 1 up from a RV cam. That tells me pretty much nothing but I don't get the feeling that it is a monster cam yet I am not getting enough vacuum to properly run the brakes. On my other vehicle I have a huge cam in a stroked 383 LT1 and I have no vacuum problems. I think my issue is a leak in the intake manifold but haven't had time to research it yet. What I am wondering is, what size cam starts creating these issues? And to the point of this thread, maybe it's not the cam but a vacuum leak or a stuck lifter, etc.. that is creating lack of vacuum.

Whit

ghetto_superman · 10-20-2006, 04:56 AM

how hard is it to steal one of those "can of beans" lookin vacuum canisters out of some old land yacht car.. wouldnt that give you some extra vac supply? i dont really know how it all works..

10-17-2006, 01:29 PM	#1
ssjones Registered User Join Date: Mar 2005 Location: Scottsdale, Arizona Posts: 98	Need more vacuum Has anybody installed a vacuum assist that they would recommend and where did you purchase it? I need more vacuum to my brake booster now that I have installed a large cam. Any suggestions would be greatly appreciated. Thanks. __________________ 1972 Chevy Cheyenne 20 1979 Chevy Camaro 2007 Chevy Avalanche 2005 Mini Cooper

10-17-2006, 02:07 PM	#2
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	Re: Need more vacuum another option is hydro boost setup off of a 1 ton or Astro van etc. I don't know how much a vacuum assist costs but the hydro boost works great. Gives you better stopping power than using the orginal booster

10-17-2006, 04:35 PM	#3
wolfthing2000 Account Suspended Join Date: Oct 2004 Posts: 1,276	Re: Need more vacuum Can you give more info on the hydro boost///???

10-17-2006, 05:40 PM	#4
zden Registered User Join Date: Apr 2006 Location: Montgomery, TX Posts: 72	Re: Need more vacuum you can get a vacuum cannister from summit for $30 bucks. mine holds about 20" of vacuum all the time and they are very easy to install __________________ 1966 Chevrolet Suburban 1955 Chevrolet Bel Air

10-17-2006, 05:43 PM	#5
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	Re: Need more vacuum run a search, a couple of people here have done it

10-20-2006, 01:46 AM	#6
Rat72 Registered User Join Date: Sep 2006 Location: Portland Posts: 135	Re: Need more vacuum I've been wondering about the vacuum issues I have. I bought a K10 with a 454 that has a cam that the seller said was 1 up from a RV cam. That tells me pretty much nothing but I don't get the feeling that it is a monster cam yet I am not getting enough vacuum to properly run the brakes. On my other vehicle I have a huge cam in a stroked 383 LT1 and I have no vacuum problems. I think my issue is a leak in the intake manifold but haven't had time to research it yet. What I am wondering is, what size cam starts creating these issues? And to the point of this thread, maybe it's not the cam but a vacuum leak or a stuck lifter, etc.. that is creating lack of vacuum. Whit

10-20-2006, 04:56 AM	#7
ghetto_superman Registered User Join Date: Sep 2006 Location: Omaha, NE Posts: 1,982	Re: Need more vacuum how hard is it to steal one of those "can of beans" lookin vacuum canisters out of some old land yacht car.. wouldnt that give you some extra vac supply? i dont really know how it all works..



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