Engine not creating enough vacuum

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Oct 30, 2017 | 08:10 AM

axelgawn

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Senior User

Joined: Apr 2015

Posts: 406

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From: Macon,GA

Engine not creating enough vacuum

Hey folks I have a beefy cam in my 347 stroker so I only get 16 in of vacuum. I just re did my mc, brake booster, rubber, hard lines pads re did drums and rotors. However I feel my brakes are still spongy even with NO leaks etc.

My question is can I get something to amplify the vacuum I have to like 25 in so there will be plenty of vacuum to go around?

Oct 30, 2017 | 09:20 AM

mark-guiver

Mountain Pass

Joined: Oct 2017

Posts: 213

Likes: 6

From: Maysville, Ky

Check the Summit or Jegs websites. They both have 12V pump systems. Some come with a reservoir, some are pump only.
Mark.

Oct 30, 2017 | 10:44 AM

axelgawn

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Joined: Apr 2015

Posts: 406

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From: Macon,GA

I have been reading that pumps are really loud. Do you currently run one?

Oct 30, 2017 | 02:10 PM

mark-guiver

Mountain Pass

Joined: Oct 2017

Posts: 213

Likes: 6

From: Maysville, Ky

QUOTE=axelgawn;17558260]I have been reading that pumps are really loud. Do you currently run one?[/QUOTE]

No need on my truck. I did spend a little time researching them a while back but after reconfiguring the PCV system decided it wasn't needed. From the research I did, the diaphragm pumps are louder than the rotary vane pumps. I assume the rotary vane pumps would probably last longer as well. some of the kits I looked at had the wiring, a pressure swtch, as well as a canister and some hose. There are some that are designed to add vacuum to the brake booster when running a radical cam. This sounds like just what you might need.
Mark.