Bad miss - could use some thoughts from y'all

[BigT]

My 350 developed a very bad miss a couple days ago, like it dropped 1 or 2 cylinders. HEI, mild cam, bought it used last fall, ran great until this issue, though it has been dieseling a bit when I shut it down hot. Plugs are new, wires and cap are all attached and in good shape, so I do not suspect and ignition issue - though I suppose it could be a bad module. My next course of diagnostic action is to check compression and go from there. Any other thoughts or things to look for?

BigT

 

[fast 99]

Can remove plug wires one at a time running to possibly isolate cylinder.

Checking compression might narrow it down.

A vacuum gauge is a good diagnostic tool for misfires, faster and easier. Many times will show a mechanical fault.

Check for vacuum leaks.

Dieseling suggests a vacuum leak or high idle.

Disregard the line.