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4th gen Fbody Spring Rate Database
(Progressive springs are listed with initial and final spring rate)

Manufacturer----------------Model--------------------Front (lbs/in)--------------Rear (lbs/in)------------------------Ride Height Drop (in)
OEM------------------------GM V6 93-97------------------223-----------------------95.4--------------------------------------0.00"
OEM------------------------GM V8 93-97-------------------310-----------------------110---------------------------------------0.00"
OEM------------------------GM V6 98-02-------------------257-----------------------114---------------------------------------0.00"
OEM------------------------GM V8 98-02-------------------292-----------------------114---------------------------------------0.00"
1LE-------------------------GM 1LE-------------------------360------------------------130-180---------------------------------0.00"
Eibach--------------------- V6 Prokit 93-97----------------337------------------------75-135----------------------------------1.00"
Eibach---------------------V8 Prokit 93-97-----------------377-600------------------94-160-----------------------------------1.30"
Eibach-------------------- V6 Prokit 98-02-----------------351------------------------80-137-----------------------------------1.40"
Eibach---------------------V8 Prokit 98-02----------------400-------------------------80-137-----------------------------------1.25"
Eibach---------------------Sportline------------------------360-----------------------80-137--------------------------------1.6" / 1.4"
Hotchkis-------------------Fbody Springs------------------285-525-----------------100-140---------------------------------1.00"
G2-------------------------Super Springs-------------------548-----------------------180-230----------------------------------1.50"
Hyperco Hypercoils-------Fbody Springs-------------------360-580-----------------168-216---------------------------------1.25"
MAC-----------------------Fbody Springs-------------------450-515------------------215-245---------------------------------1.50"
SLP------------------------Level 1 Progressive-------------223-448------------------97-136----------------------------------0.75"
SLP------------------------Level 2 Progressive-------------300-450------------------115-185---------------------------------0.50"
BMR-----------------------Fbody Springs(older spec)------310-550-------------------145-170---------------------------------1.00"
Suspension Techniques--Fbody Springs-------------------428-----------------------161-----------------------------------1.30" / 1.70"
Edelbrock-----------------Fbody Springs--------------------585------------------------120-150--------------------------------1.25"
DMS Springs--------------LS1 98-02----------------------325-630-------------------95-160----------------------------------1.30"
Strano --------------------F body springs------------------550-------------------------150-------------------------------------1.25"
BMR-----------------------performance spring(new spec)-550-------------------------160-------------------------------------1.25"
Vogtland-------------------F body spring-------------------440-542--------------------183-228--------------------------------1.2"
Shock Rate Database

Manufacturer------------ Model/Location-------------------- Bump--------------------------------------------- Rebound
Bilstein ------------------HD Front---------------------------- 159------------------------------------------------ 279
Bilstein -------------------HD Rear----------------------------- 86------------------------------------------------- 174
SLP/Bilstein-------------- Front-------------------------------- 130------------------------------------------------ 397

------------Camber (degrees) -------------------------Caster (degrees)------------------------------------- Toe (dergrees)
factory------ +1(
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