I can set up a dual-carb system, but I need my dyno and a 4-gas exhaust analyzer to do it right. For starters, try putting in main jets that are about 25% smaller diameter, and go to VERY light springs for both power valves, so they stay closed almost all the way to wide-open throttle. Since you're flowing air through two venturis instead of one, and supplying gas from two main jets, it's necessary to cut down on the total fuel volume available. You might also try raising the float level slightly, to help the venturi vacuum get the gas "over the hump" from the float chamber to the airstream. Just don't raise the level high enough to drip fuel from the venturi nozzle at idle.
A better choice for carburetion would be a matched pair of Carter carbs jetted for a 216, but the manifold stud spacing would have to be altered, or adapter plates would need to be fabricated. Carbking has suggested similar carbs several times for 2X1 setups.
Jerry
Last edited by Hotrod Lincoln; 07/07/2008 3:57 AM.
