Demon rear spring height

72bluNblu said

Factory XHD springs for A-bodies are 110 lb/in, not 140. SS springs start at 140 lb/in and go up to 160 lb/in.

Factory bumper height is listed here, which will give you the basic factory ride height (loaded). Full size version here The 1970 Hamtramck Registry - Chrysler Passenger Car Bumper Heights 1965 thru 1976 Slideshow
View attachment 1715962232

Instructions for getting those heights are here The 1970 Hamtramck Registry - Chrysler Passenger Car Bumper Heights 1965 thru 1976 Slideshow
View attachment 1715962218

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Using the Duster 340 measurements, this shows my car as being lowered 1.75" (11.2.5") in the front, and the rear being almost 3" (14") higher than stock. I measured at the center of the bumper, which is the bottom of the license plate opening, if I went to the actual bumper, I would show an even higher ride height. I think something is off there. This pic is with a 315/35R17 out back (~26") and a 215/45R17 up front (~25")