I have a 2000 F250 v10 new remanufactured heads etc... Running sluggish. Is it possible to get timing chains off and it still run? Or have a bent valve?

 

A bent valve ,you would notice right away with an engine miss. Timing off, yes could run sluggish. Best to recheck all timing marks and confirm correct placement. Did you turn the engine over by hand at least two revolutions before final assembly to confirm the marks are correct?

 

I did turn engine by hand 5 to 6 revolutions by hand before starting it. I disasemblied it again and rechecked all marks all ok. 150lbs plus of compression in every cylinder except #4 which is 120lbs

 

I think you are facing a different problem. What are the conditions under which you drive it and it seems sluggish. Sometimes you can distinguish between a fuel problem or an ignition problem even without special test equip. Have you been able to confirm good / proper fuel pressure ? If I may ask what was the reason for replacing the heads?
Can you supply everything you have done to the engine since the problem appeared?

 

I had a plug blow out and put heli coil in it. It went all the way into the cylinder. I ordered new reman heads and new timing chains and gaskets. Ever since has been running rough. Rough Idle, worse in gear. Ohmed out COPs they seem fine, all the same. I wouldnt think it would be a fuel pressure as it ran before but I will check when I get home.

 

Sadly enough, you can't rely on an ohms check with Ford's COP system. The coils will ohm out good and still be defective.

 

Darn the luck. I have swapped them in and out having a couple extra. Not sure what to do now

 

At this point we don't know if it is missing or something else is going on.
How does the exhaust feel at the tailpipe , is it steady or is it popping?

 

Definantly popping. Like one cyl is what I hear.

 

That sounds like a misfire and the PCM should definitely pick that up if it is consistent.
What you can try is to unplug one injector at a time and see which one makes no difference to engine rpm. Start with the easiest injectors you can get to , you may get lucky and hit it right away. Once you pin it down to one particular cyl you can concentrate only on that one. Some other things you can try is to know which cyl then swap coils with another cyl and see if the miss moves too. You can also try that with an injector , but that is easier said than done. Try the simple things first.

Sometimes the simple things escape us, probably more me than anybody else, but could you be working with a cracked spark plug which may or may not have been placed in the same hole at the time the compression test was done? If you can narrow it down to one cyl it might be a good idea to start with switching that plug with another cyl and see if the miss moves.