Noisy Vacuum Pump-What to do?

Had to install a vacuum pump, for my brakes,because of the lack of vacuum on my 383 and have added sound deadening behind the back seat, but still it's loud. I thought of mounting it in a ice chest, in the trunk, but the manufacturer says this will kill the pump, because of the heat. What can I do to quiet this thing down?

 

try an air compressor type air (intake) filter aka silencer.

 

I'll try this. lc

 

I'm running with the same issue in my '36 coupe with a too big a cam in the SBC under it's hood.
It's in an insulated enclosure inside the trunk.
Sounds like an annoying muffled jackhammer.
I just live with it................stupid though, I know.
The good thing though, my vacuum went from 7.5 inches to 16 inches.

 

Is the insulated enclosure completely sealed? If so, does the pump heat up?

 

Sounds like it is one of the old "China brand" pumps that SSBC sells. When I worked there as QC , I think about 60% of them came back for this reason. There are some more expensive ones out there that are quieter and I think some older chevy vans had some quiet ones from the factory. Of course there is always hydroboost ( also on some vans) and I remember a street rod hydroboost, maybe ECI or Masterpower? Maybe try a smaller diameter, double plunger booster.

Whatever you do use, make sure you have a good check valve to keep it from bleeding down.

 

Switch to hydraboost, if you get the ones off 1ton trucks (chevy 73-87) they don't have that dorky looking plastic resevoir and aluminum housing. That's assuming you have power steering.