Vacuum Pump on a 250

[Anonymous]

Hey guys, I'm just wondering if you guys have had any experience with running a vacuum pump on a 250. I'm not really looking to run a full dry sump, just looking for the benefits of the vacuum pump itself. You guys got any ideas ??

Cheers,
Leee

 

[rbohm]

8) assuming you are refering to using one for crankcase ventilation, dyno tests have shown you can gain as much as 25hp(in this case on a big block chevy that was well built). the theory behind that is that the reduced crankcase pressure didnt fight the pistons as much.

 

[Anonymous]

Yup, just looking to eliminate some of the parasitic power loss by creating a vacuum inside the engine. Anyone ever used one ?? :

 

[Anonymous]

hmm,, this has got me wondering...

i think i may look into this one some more

there has to be a small 12 volt vaccum pump from a pump shop some where, dump into a breather can... hmmmmm

*/wanders off muttering and wondering a cheap and reliable set up.

i'll get back to you guys.

cheers.joe.

 

[rbohm]

8) try grabbing an engine driven vacuum pump from a ford 6.9 or 7.3 diesel. it only takes a couple of hp to drive it so that means you would have a net power gain. the more vacuum you can draw the better.

 

[Anonymous]

I remember that articale on the bb Chevy. The problem is that you can overdrive them so much thay you will suck oil out of the bearings But a cheap way to do it is use a GM smog pump oon the suction side. If you need a high dollar one Moroso, Areospace and a few others make them.

Steven

 

[alloydave]

What about using a alternator of a diesel engine that has the small vac pump on the back of the unit ? You would have to plumb in a small oil line
(maybe off the oil pressure switch line) to stop it seizing and a return line back into the rocker cover .Gives you more amps and a vac pump all in one.. .

cheers dave