Dart falls on it's face.

Does it do it if you leave the car in high gear and run it up light throttle, then nail it to 6K? If you are looking for a budget module, find a Standard Ignition LX-101. It wont pull out timing like the orange box and the quality is more consistant. I've got 3 potential spots.. The carb.. is it new? Crap in it somehere? The ignition box... Is it grounded well? Is teh egnine grounded well? The valve springs... I think you should have enough with the GM 3100 springs but I can't recall what the presures are. Which is why I ask if it will ever rev beyond 6, or just in first. If it never would... I'd pull a spring and test it.