i replaced the motor/trans mounts with poly ones, which i thought would cure my engine shaking. I have gone over almost everything i can think of
( plugs,wires,fuel pressure @41-42 idle and wot, re set valve lash, new o2 sensors, cleaned and tested about every other sensor, flywheel and converter are tight.

its mostly at idle but follows thru out the rpms off and on, the only thing left i didnt touch are the icm and opti
The engine did not shake this much when the H&C swap was 1st done so it's something that just surfaced, would either of those 2 cause this??
(i spent 2-3hours using search )

 

Even a single misfiring cylinder can cause shaking and rough idle. I'd check to see that you aren't arcing anywhere.

 

Mine was misfiring cause of a burnt plug wire, make sure they are clear of headers.

 

I am running them otvc , i have a spare set of msd laying around ill throw them on tomorrow and see how it goes

 

Injectors all plugged into the correct harnesses?

 

yeah i had 1 plug wire cut in half and it shook a little bit, but not too badly... but its enough to notice... and before that i had the cut plug wire and my coil wire was arcing like no other.... and it shook a little more

 

had to double check that one, but they all look good

 

Many have said that before.

 

I really hope it's something i over looked

wires are fine, also tried second set no difference,also swap swaped out a diff coil also no diff