I agree, I don’t think it’s fuel, but it might drop the bowls enough to screw around with the air bleeds a/f ratio. I had 5 lbs at the gauge and it would drop to 4 lbs. you would think if you have pressure you should be good, but I needed to increase the needle an seat and increase the fuel supply so the velocity of the fuel into the carb was quick enough not to let the level drop. I truly believe its your tach. The way it goes right to 4000 backs off a hair goes right back to 4000 and repeats. I have seen it before. smile


best of 11.24 at 119 mph 1.60 60’. 68 340 S Barracuda Fastback F.A.S.T [IMG]http://i67.tinypic.com/2mnnnnt.jpg[/IMG]