good ignition module?

URDUSTED said
I think I've got a bad orange box on my 440...hard to get idle dialed in, won't idle in drive....runs ok up to about 4500 - 4800 then everything just goes south....NASTY misfiring....my first thought was starving for fuel...changed the fuel pump...then thought the carb might be bad (only a year old)...so I borrowed another new out the box carb from a friend...car performs exactly the same with second carb and new fuel pump. Admittedly I'm not a master mechanic. lol

Would a bad orange box cause the car to idle like crap...then run good up to 4500?

This could be caused by reversed polarity to your dist. One way to see how bad rotor phasing is, look on the bottom side of your dist cap; if what I call the burn mark on all eight lugs is way off to one side? The burn mark in all 8 lugs should be somewhat centered. If not; then you have possible reversed polarity or just a screwed up dist with really bad rotor phasing. Of course check your reluctor gap. Set at .08-.10 Also possible bad coil.
:burnout: