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Spring Rate Table (All are 4-inch Lifts)

Low spring rate = more axle droop and compression

High spring rate = reduce axle wrap-up/higher load rate

Information  was obtained from 4 Wheel & Off-Road - July, 1999

Make and Model

Suspension Manufacturer

Spring Rate (Lbs/In)

Number of Leaves

Free Arch

73-91 Blazer/Jimmy

 Pro Comp (11411) 520 5 3.72
  Rancho Suspension (RS86206) 520 5 3.72
  Rough Country (8002) 604 5 3.48
  Skyjacker (C140S) 490 5 5.00
  Superlift "H.D." (01-234) 605 6 4.125
  Superlift "Superride" (01-234-6) 560 5 4.375
  Tuff Country "H.D." (TCI-C4HD) 395 4 4.75
  Tuff Country "EZ-Ride" (TCI-C4M) 295 3 5.75
  Warn "standard" (721013) 672 5 4.75
  Warn "E-Z Ride" (721014) 490 2 5.00
  BDS (001408)
56" rear		 430 ? 4
 
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