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View Full Version : Vacuum Pump assisted PCV for Z06


XfireZ51
12-06-2012, 08:47 PM
Here's an article on the Z06 pump and the power increase they got. Thought it was interesting given how some on the registry are experimenting w this on our motors.

http://www.corvetteonline.com/tech-stories/dyno-tested-big-inch-454ci-lsx-with-gz-motorsports-vacuum-pump/?utm_source=rss&utm_medium=rss&utm_campaign=dyno-tested-big-inch-454ci-lsx-with-gz-motorsports-vacuum-pump

GOLDCYLON
12-07-2012, 02:30 AM
Cool article DOM its looking like a timeless problem to contend with

XfireZ51
12-07-2012, 09:00 AM
GC,

So it looks like they got a net of 7chp after any parasitic losses from driving the pump. I didn't catch what the cost of this was. They're driving off the motor. So does that mean an electric pump won't do the trick?

-=Jeff=-
12-07-2012, 11:40 AM
so does the mechanical pump vary in the amount of vacuum pulled in the above application? If no, then I don't see why a electric pump would not work

if yes, then the Electric pump would need to vary speed long with RPM of motor

mike100
12-07-2012, 12:39 PM
I've heard of this 20 years ago for circle track racing. I think the bigger benefit would be a little less blow-by and the extra hp would just be a bonus.

Interesting the LS-454 in the write up lost a little torque in the midrange- wasn't expecting that.