I am thinking it is the caster.
This was gonna be my guess as well. being leaf sprung, that narrows out a lot of geometery issues with the track bar, etc. Then what tipped me off is you said you redid the front suspension, and obvisouly you didn't have it before. placement of the front springs definitely has an effect on caster.

Up until I switched the tie rod from the hi steer arm down to the normal tie rod location I didnt have any death wobble. the normal tie rod location is at a slightly different angle than the hi steer arm was.
tie rod? the rod that connects both tires? or drag link, the rod that connects wheel to steering box? i think there may be some confusion in terminology. regardless, angle of the drag link/tie rod should have very little to do with death wobble if everything else is configured correctly.


and my spring hanger is considerably higher than my shackle it changed my caster. Quite a bit in fact.
do you know how much? i'd measure your caster so we can talk in numbers here.


here are the solutions that I see so far. I can move the spring hanger further down and make myself some bigger fangs but at the same time make my spring eyes closer to level while at the same time lifting myself some as well.

Or I can cut and rotate the knucles even further to correct the caster.
sounds oh too familar of the thoughts going through my head not long ago. now maybe you understand how my rodeo got so big so fast <img src="/forums/images/graemlins/evil.gif" alt="" />

-Rob