any body know any thing about engine vacumme

i got a question, im running dirt track, i got a pull 18 lbs of vacumme, im pulling 15 and dont want to change any engine parts. is there any tricks to increase vacume, like intake size, or spacers or something.

You don't want to increase vacuum. Vacuum is just how hard your engine is sucking air in. For example, if you had a more restrictive intake, your engine would pull MORE vacuum and produce LESS power.

I know that it's fine where it's at and it's spelled vacuum...

lol...

Where are you at. Altitude effects vacuum. Anyhow, 15 in/hg of vac is fine.