1966 Dodge Dart GT Factory Ride height?

Wow,so all the $ chrysler spent on developing the suspension w/ anti-dive,anti-roll,
correct scrub radius,minimal bump-steer,time,track and testing could've been avoided.
If only you'd been there to tell them "just wing it if it looks good".

Have you told this to the people how have spent all that money on after market K-member replacements? They may want to know so they can save themselves thousands of dollars.,

It is the angular relationship of the lower ball joint center to lower control arm pivot
and the ground you are setting,which dictates how well the car does what it's supposed
to. If the OP had installed killer t-bars and changed align angles for perf.,that'd change
what one might set that angle, but I'm pretty sure he said "restore" in his post.Why'd
one "give up" on the OE procedure?What the manual didn't say was to loosen the LCA
pivot stud nuts,jounce,set height,then jounce-recheck,then tighten the LCA & recheck.

40 years ago I tried to set the ride height by the manual. It was time consuming and error prone. I am sure that the factory techs probably figured out a quicker method to set the ride height. Probably something like what I described. It is an obvious solution. Time is money, especially when you are charging by the rate sheet. The faster that you can turn a car around the more money you make.