Help, my exhaust is killing me.

Sounds to me like you're running way rich, mine was doing that at first with the new carb. She'd drive ya out of the garage with your eyes burning and watering. Plugs showed a little black, went down 2 sizes on the primary jets and much better and now plugs are brown (I like a little rich). Also check to make sure that your secondaries aren't open a tiny bit at idle and therefore bleeding in extra fuel. Have you had to set the primaries idle screws way low to get it to idle down correctly. Also recheck your float levels on the Holley that they aren't to high.

Terry