What else will change if the car is lowered with new springs? 1"

Rear ? nothing, maybe better handling.

Front ? need re-aligned,& better handling.

fronts only. just re align.. great

fronts only. just re align.. great

Actually, your steering geometry will change. With 1" drop, you'll probably be OK with regular length ball joints. But with 2" drop, you'd want to address it.

Drop It.. Align Your Front And Go......

What changes? Camber? prob not toe. Just trying to learn..

It is very likely that your car has some bump steer (from what I have read most 67-69 f-bodies do) then the toe probably will change along with camber and caster.

One thing to look at when lowing the car is if the wheel will rub on the wheel well or if you will start scrapping the ground with 1" less ground clearance in the front.
I lowered my car 2" all around and scrape the headers and exhaust often, but hey its just exhaust.