I have just finished installing a triangulated four link onto my 48 Chevy pickup, and am now in the process of looking for rear coil over shocks. I used the following equation to determine a rough estimate of the shock sized I would need:
(shock travel) x 66% - distance between mounting points of shock at ride height = compression
(shock travel) x 33% + istance between mounting points of shock at ride height = rebound
At Summit Racing I found QA1 Pro Coil-Over Conversion Systems ALN2000K (QA1 Pro Coil-Over Conversion Systems ALN2000K - SummitRacing.com
Using my distance between mounting points of the shock at ride height (15 inches) and the travel distance of these shocks (5.125), I calculate my needs to be 16.69 rebound and 11.61 compression.
The shocks from Summit Racing are 16.250 rebound and 11.125 compression.
Have I done my calculations correct, and will these shocks work for my needs?