vacuum gauge hookup

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Dec 25, 2002 | 05:29 AM

bikerwolfie

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From: usa

vacuum gauge hookup

where do i need to connect my vacuum gauge at to set up my carb? i'm using a holley 500 cfm and it has a port for constant vacuum. can i use this connection? or do i need to find a vacuum manifold for my stock intake?
thanks and merry christmas

Dec 25, 2002 | 08:46 AM

Ratsmoker

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Joined: Feb 2001

Posts: 6,624

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From: Missouri

vacuum gauge hookup

If the port is on the bottom of the carb and has a constant pretty strong pull at idle it is manifold vaccum. You should have a port coming off of the manifold. This should work also. If you have power brakes take your reading from that line.

Dec 25, 2002 | 09:21 PM

bikerwolfie

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Joined: May 2002

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From: usa

vacuum gauge hookup

the port on the carb is at the bottom and according to the instruction this port is for power brakes ( which i don't have) and has a constant vacuum. i don't have any ports on the manifold just plugs. i'll give the carb port a try.
thanks

Dec 25, 2002 | 11:49 PM

Ratsmoker

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Joined: Feb 2001

Posts: 6,624

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From: Missouri

vacuum gauge hookup

That will work for ya. Let us know what you get.

Dec 26, 2002 | 02:06 PM

1QUICK75

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Joined: Jul 2001

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From: Riverside USA

vacuum gauge hookup

bikerwolfe,,just a note to let you know your dist & boxs will go out monday, decided to take the week off(actually girlfriend decided) and all that is at work...But it will go monday, no charge! since its UPS Ground!

1QUICK75
75 F150
423 FE
heads reworked/CJ Valves
ATO C6 lowered 1st & 2nd 10" torq/1800 stall gearvendor OD
393 Detroit Locker.......:-X12

Dec 26, 2002 | 10:51 PM

bikerwolfie

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Joined: May 2002

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From: usa

vacuum gauge hookup

i'll be glad to pay for it. my parts dealer said he had a schematic for the hook up of it. i've got about 500 miles on the new engine and have adjusted the points twice, darn things keep slipping

i did put an antivibration washer under the screw heads this last time. after 11 years with one that had electronic ignition i had forgot how much trouble points are.
thanks

Dec 31, 2002 | 01:44 PM

bikerwolfie

Thread Starter

Senior User

Joined: May 2002

Posts: 160

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From: usa

vacuum gauge hookup

finally got around to setting the carb with a vacuum gauge. i used the constant vacuum port on the carb, seems to have worked just fine. i'm getting a steady and solid 19 hg. what should it be? this is the first time i've used a vacuum gauge. this is the highest reading i can get by adjusting the carb and timing.