Well; I finally installed my Offy 2x intake and Fenton headers. This will be my first attempt at setting up multiple carbs. So far, it's not right.

The exhaust isn't installed yet. I had 18" pipes made and they're on it.

No matter where I adjust the air/fuel mixture, it only runs when the choke is closed on one of the carbs. It seems like it has a vacuum leak somewhere; doesn't it? I have a vacuum line going from the vacuum advance on the distributor to the second carburetor (near the firewall). That's the same carb that has the choke connected. The vacuum on the other carb is blocked. I've also blocked the vacuum hole on the face of the intake.

What are your ideas for solving this problem?

Thanks.


Jerry Acheson
Indianapolis, IN
57 Chevy 3100