swapped 4.3 to 6.0 and not getting spark to one cylinder NEED HELP

[zebra]

i don't believe the crank position sensor has gears in it. at least it didn't look like it when i was checking mine.
when i did my swap, none of my coils were firing, but that turned out to be a computer issue

[Frenchy]

swapped plugs yet?

[butler145]

yeah have swapped plugs. thats not problem. we eliminated the omputer issue by swapping 3different computers out. used what came with motor , then an extra a guy had and then took one out of buddys truck thatis running and drives everyday and still no spark.
but i believe the crank position sensor has like little teeth or cutouts on it. i just wondering if those could break some how. cause have replaced i believe everything else or swapped things out and still get nothing out of it.
its confusing for sure.

[butler145]

the relucter wheel could something of happened to that to cause t to not get fire o just one cylinder?

[farmtruc]

do you notice that the tach needle is slightly jumping up and down, or is it smooth?

we just had a 408 in here, built by other, reluctor wheel was damaged, was causing two cylinders not to fire, that was a pita!!!!

[butler145]

Yeah that's what I'm thinking is wrong with it. Cause have changed out everything else. So changing that was hard? Sucks cause just got motor in too? Will I have to remove motor to change? And how do I get it off crankshaft and install new one?

[farmtruc]

see if the rpm's are fluctuating, moving erratically, etc, the rpm is based soley on the crank trigger.