[panmann]

anyone out there had this problem? this is a brand new engine from ford motorsports with a holly ultra 650 cfm carb and a single plane vitor jr manafold......any ideas?

[DoubleVision]

Have you checked the carbs pump shot? The very instant you move the throttle you should see 2 solid streams of fuel shoot out. Sometimes if the pump is bad or the pump cam is in the wrong slot it won`t give a immidiate pump shot which causes a dead spot.

[oldchevy1956]

I have had this problem before. It could be several things but I will hit what is common first. First, check the carb as mentioned above and you may need to make an adjustment to the accelerator pump to add more gas as the accelerator is moved from idle to acceleration. Secondly, check the timing to make sure it is not too retarded. This will cause the engine to drag or die out. Next, make sure you wires are routed to the correct cylinder. A 347 stroker may have a cam for a 351w which has a different firing order. I have done this and actually got the engine to run but not well as you are not running on all cylinders. Lastly, for certain cams you will need to up the stall speed on the torque converter. You can check the cam specs on the web and see what it recommends. Good luck.