MTNRAT said:Oh and this from another thread.
From what I can figure and been told, it seems that 80 series front axles are not all alike with respect to caster. The only explanation is that when they are built, the knuckles are not all welded in the same position. The result is factory caster that seems to range from 1.5 degrees to 4.5 degrees. Those with more positive castor respond to lifting better, and those with less factory caster respond to lifting poorly.
Just a few thoughts to ponder.
Cheers,
Sean
I believe I did report someplace that my completely stock (as best as I can tell) suspension in excellent condition was showing slighly under the low end of the published specs range. IIRC it was something like 1.5 and/or 1.75 deg. Drives perfectly.MTNRAT said:The theory of the difference in stock caster is more of an observation derived from how the same suspension modifications on different trucks give a seemingly vast array of results with respect to driveability. It would be very interesting if everyone here who's 80 is still stock had the caster measured and reported back. That would give us an idea of the actual starting point.
Cheers,
Sean