Quote: If you are just swapping manifolds without tuning on the jetting and especially the accellerator pump circuit, you are not making a valid comparison. A richer carb set-up will favor the single plane and a leaner carb set-up will favor the dual plane. The question is how is the carb is in relationship to the rest of your engine to start with.
I may leave the intake on for another go, but…being the skeptic that I am, I don’t think I will be able to get the 60’ times down to the same level as the Air-gap. I would need to pickup ~7 hundredths just to equal the Air-gap. The launch just feels too soft…throttle response is great, it just feels like it is down on torque.
The carb is currently tuned perfectly for the Air-gap, I assume the Victor will want a little more Jet and squirter?
I'm thinking with a DA of +4000 feet that is where your missing power and torque went. Probally needed to lean it down a little because of the bad air. Too bad you don't know what the DA was the last time you ran the AG.
