Its got new MSD wires, brand new HEI cap, fairly new Petronix Flamethrower coil, new ignition module, new rotor, plugs look fine, its NOT the carburetor...I tried 3 different carbs with the same exact problem, and there are NO vacuum leaks, timing is set perfect, distributor is bolted down nice and tight. I'm totally stumped. I KNOW its an ignition problem because it only happens at high RPMS when I get on it, and becuase it does the same thing with different carbs on it, plus my car did this exact same thing a few months ago and it turned out to be the plug wires (****ty accel 8mm) but I replaced them and the MSD's still look new! Am I going insane??!? I'm about ready to buy a new motor j/k but seriously I'm getting angry. By the way......last week the car drove PERFECTLY, I didnt' change a thing (only thing I did that I can think of that maybe relates is I took the car through emissions, had to detune it and swap some emissions equipement back on...but I set everything back to the old setup), and now this week it suddenly doesn't run right when I get on it. This is really pissing me off cuz I lost to my buddy in his 2001 SS camaro and I usually SMOKE him!! He thinks his car got faster!! @#%#@@#$@#$@!#@%!%