[70temp455]

What amount of intake manifold vacuum is normal ?
I hooked up my Mity Vac to my intake to use as a vacuum gage and it showed 19 lbs of vacuum. Is this right and normal.
Thinki back I vaugley remember setting Idle mixture to best vacuum so I did taht and it was way rich so I cut the mixture screws back to where each just made about 1/2 lb drop on vacuum.
I keep saying my 72 350 is worn out but I just got my gauges hooked up and I have avg. 35 lbs oil pressure while driving and haven't seen less than 25 lbs at idle when up to temp. So it may not be as worn out as I originaly though.
Although I may have a head/valve issue. Itryed the dollar bill test at the tail pipes and it did suck the bill to the pipe occasionaly.
Thanks,
Andy