dodgenut7

i am trying to set my air/fuel mix i thought i had but i think i am still off i set it by getting the motor to run as smooth as i could i was gonna use a vacum gauge to set it but i found no vacum ports of any kind or i just could not find them i am no mechanic by any stretch but there isnt any vacum lines going to the carb either what am i missing or is there another way to set my mix any help would be great

Sgt. Veteran

Should be at least one in the front of the base plate (manifold vac) some have a huge one in the back for PCV and should be a ported vac port above the base, side of the meetering block is where they usually put it - post a couple of pic's close up and we can spot them, Jake

Archer

dn -

Like Jake said, there should be one going to the PCV and / or the break booster. Depending on the manifold, there might also be one or two coming out of there too, but they may or may not be hard to reach. (Just use the other end of the hose.)

While (maybe) not as precise, you can also use the tach to look for changes in rpm as you play with the A/F mixture. If your are already close, small changes won't show any change.

Archer

Sgt. Veteran

Its a 2v but the port locations are pretty much the same, hope this helps

dodgenut7

thanks guys BIG help i found the ports the large port in the back is going to my master cylinder the pcv also goes to the master [is that correct ?] the small port is capped off i dont know why or where it should go oh it is a edelbrock intake not sure which kind

Sgt. Veteran

The two "T" 'ed together is ok, myself I like to keep them seperate - your intake should have a capped off hole in one of the runners, I like to run the booster from here and the capped off small port is ok and normal, the old old motors only hade 2 vacuum lines on them, 1 to the advance & one for the windsheild wipers - try that system going up hill in a rain storm lol the good ol'days - the extra vac. ports are just to make the carb fit many diffrent engines with diffrent vac. needs