Typical Vacuum at Cruise?

[65malibuss]

My Buick engine idles at 16-18 in Hg, and while I'm cruising along at say 50 mph the vacuum is around 10-12 in Hg.

I'm used to my Chevelle which idles at 18 in Hg and during cruising has a vacuum level of 20-24 in Hg, regardless of the rpm.

What kind of vacuum do you all get when cruising at a steady speed?

Thanks.

 

[Jbenn911]

'bout 10-12 here too...

 

[thunderace31]

Just came in from a ride and mine is about the same on the freeway it was down to about 4 with air on and 60-70 mph