Thread: 350 running rich

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Thanks for the help guys!! Here's a pic of the vacuum gauge I'm using.

I'll definitely watch the videos linked, thank you!!

I'm plugging in right at the very bottom of the front of the carb just above the gasket. There's 2 ports, I'm using the left one for the vacuum advance, and the one right next to it for the vacuum gauge.

I'll have him order a 4.5 PV and some smaller jets. I probably won't get an opportunity to work on it again until next weekend, I'll post my results.

I should add that when he got the truck he said it ran great, but it started running poorly so he called me to work on it. He didn't drive it much, maybe 30 or 40 miles before it started acting up. He tried to get more information on the motor specs, but unfortunately had no luck. Since I've been working on it, it hasn't run good at all. When we took it for a ride, it would misfire horribly when getting on it at all. If you just put around with it, it seems to go alright, but as soon as you put anything into it it sputters and misfires something terrible. He said that one of the previous owners had raced it and ran race gas in it.

The carb is manual secondary, and I believe it does have a second power valve in it. I have taken the secondary half apart yet, so I don't know for sure. I tried to find some identifying numbers on it so I could see what CFM it is, but there's no numbers stamped in the usual spot on the choke tower.

Thanks again for all your help!!