Vacuum Readings
#1
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Vacuum Readings
'72 340
I'm going to research this as well but there is nothing like real life experience so I will throw this out there for you guys thoughts.
I just bought a vacuum gauge, as vacuum seems to be a big part of tuning in the engine, so I have read.
@ a warm idle of 650 rpm I'm showing 18 Hg of vacuum. No other reading have been taken yet.
Good, Bad or Ugly
Thank you
Joe.
I'm going to research this as well but there is nothing like real life experience so I will throw this out there for you guys thoughts.
I just bought a vacuum gauge, as vacuum seems to be a big part of tuning in the engine, so I have read.
@ a warm idle of 650 rpm I'm showing 18 Hg of vacuum. No other reading have been taken yet.
Good, Bad or Ugly
Thank you
Joe.
#4
Mopar Lover
Joe -
For a modified engine that's pretty high. Even a cam with a mild lope (overlap) can knock down your vacuum. I get about 10mm with a flicker in gear (700 rpm) and about 15mm at idle (900 rpm).
Archer
For a modified engine that's pretty high. Even a cam with a mild lope (overlap) can knock down your vacuum. I get about 10mm with a flicker in gear (700 rpm) and about 15mm at idle (900 rpm).
Archer
#5
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Wow guys, thanks for the info.
Looks like I don't have any more than a stock cam.
And the idle test I did earlier looks as if the the vacuum
is exactly what is expected form a well tuned stock motor
(15 - 22 in.) I measured 18 in. and steady as a rock.
I get her all mounted up in or below the dash tomorrow and see what she looks like traveling down the road.
Thanks again, great info!!!
Joe.
Looks like I don't have any more than a stock cam.
And the idle test I did earlier looks as if the the vacuum
is exactly what is expected form a well tuned stock motor
(15 - 22 in.) I measured 18 in. and steady as a rock.
I get her all mounted up in or below the dash tomorrow and see what she looks like traveling down the road.
Thanks again, great info!!!
Joe.
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