yes, center of hole to center of hole straight line measurement.
i typically start at 23" but adding a bit more will give you real nice handling. if you have an aftermarket drive shaft, you may not be able to add more without getting some vibes at high speeds (80mph).

 

Excellent. I haven't swapped out the driveshaft, and won't until the other one makes me.
Any chance you could edit the Write-up to include the lower control arm stuff? It has upper control arm measurements, but not lower. I was playing around all day and happened to wander into this thread, or I would have started PM'ing more people.

 

Geesh I walk away for 5 minutes and WOL steals my thunder.

Anyway what he said ^

 

So about like this?

 

so long as these are your front lowers, yes...

 

Perfect.

 

Also assuming that the other end of the tape measure is in the center of the front hole...

 

AEV High Steer Kit and Teraflex adjustable lower control arms are on. Cam bolt holes were welded back in first. I told them I wanted caster between 6-7. The sheet shows 7.4 and 7.2.

Now, Im getting a bad vibration at about 75mph. I also get a vibration when letting off the gas in 4wd at every speed.

Im no mechanic. Help me out. How hard is it to adjust the control arms? Will I need it realigned if I mess with the arms? How much adjustment will give a degree of caster?

Wow, it drives WAY WAY better!

 

Awesome but if you have an auto with that caster you are going to see issues with vibes unless you change front drive shafts. mkjeep had to do this. I have a manual so there are no issues. Leave your caster alone and buy a drive shaft.

 

Ahhh, I cant spend anymore money on this thing for awhile. Ive put $20k into it and I dont even have a hemi yet.

Is 7.2/7.4 too much castor even with a new driveline?

How will a new driveline fix this?