78-88 GM G-Body Rear Pro Coil System

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$723.94
78-88 GM G-Body Rear Coil-Over Conversion Kits78-88 GM G-Body Rear Coil-Over Conversion Kits
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  • 78-88 GM G-Body Rear Coil-Over Conversion Kits
  • 78-88 GM G-Body Rear Coil-Over Conversion Kits - MOD™ Series Adjustable
  • 78-88 GM G-Body Rear Coil-Over Conversion Kits - Double Adjustable
  • 78-88 GM G-Body Rear Coil-Over Conversion Kits - Single Adjustable

1978-1988 Monte Carlos, Grand Nationals, Regals & Cutlasses Rear Coil-Over Conversion Kits

QA1 offers bolt-in Rear Coil-Over Conversion Kits for 1978-1988 GM G-Bodies. These kits include specially designed USA made mounting brackets single, double, or MOD™ Series adjustable aluminum shocks, springs and all necessary hardware.

Single adjustable shocks provide 18 positions of simultaneous rebound and compression adjustment while QA1’s double adjustable shocks provide 18 positions of compression adjustment and 18 positions of rebound adjustment, for a total of 324 possible valving combinations. MOD™ Series shocks also feature a double adjustable design but include adjustable low-speed bleed as well for fully independent control over compression and rebound characteristics.

These shocks also utilize a fully threaded body allowing for ride height adjustability. Multiple spring rate options are also available, and have been successfully tested in various applications, from casual street driving to hard core race applications.

With our highly popular adjustable struts and the addition of the Rear Coil-Over Conversion Kit, you can now get a complete suspension makeover for both ends of the vehicle.

  • Made in the U.S.A.
  • Easy, Bolt-In Installation
  • No Cutting or Welding
  • Coil-Over
  • Ride Height Adjustable
  • 100% Dyno Tested and Serialized
  • Rebuildable and Revalveable by the QA1 Factory or QA1 Authorized Service Centers
  • Kit Will Lower the Vehicle

 

Additional MOD™ Series Features:

  • Features QuickTune™ technology - modular valve packs that allow for completely revalving the shock without having to remove it from the car!
  • 24 click independent compression and rebound adjustment with low-speed bleed
  • Large solid piston (with blow-off valve) for improved driver feel and control with up to 1,600 lb. force
  • High-speed valving adjustment (coarse adjustment)—relates to shock operation during impact events, like hitting a pothole or curb 
  • Low-speed valving (fine-tune adjustments)—adjusts ride quality and weight transfer on corner entry/exit; more bleed for softer feel and less bleed for stiffer feel
  • Indexable base eyelet—multiple mounting positions to optimize knob access and provide more mounting flexibility
  • Thrust bearings included

Conversion Kit Note: Later model vehicles tend to weigh more on average. Please take this into account when ordering springs. Call QA1 tech at 952.985.5675 for questions.

Pro Coil Systems include:

  • 2 Shocks
  • 2 Springs
  • All Mounting Brackets and Hardware

Installation instructions for 78-88 GM G-Body Rear Pro Coil System

MOD™ Series Shock Installation and Quick Tuning Guide

Spanner wrenches and thrust bearing kits sold seperately

SPRING RATE CHART
The chart below is a general guideline for selecting spring rates for QA1's Rear Pro Coil Shock Systems for 78-88 GM G-Bodies. Spring rates may vary depending on applications, usage and personal preference.

SoftMediumFirm
170 200 220

AVERAGE VEHICLE WEIGHT
See our detailed Spring Rate Chart with Vehicle Weights for general guidelines on determining the approximate weight of popular vehicles and which spring rates work best for them.

QA1 GM G-Body Rear Coil-Over Kits - SEMA 2014



Assembling a QA1 Coil-Over Shock Kit

 

Change Ride Height & Valving on Single Adjustable Coil-Over Shocks

Part Numbers
Ride FeelingMOD™ Series AdjustableDouble AdjustableSingle Adjustable
Soft RCK52448 RCK52355 RCK52351
Medium RCK52449 RCK52356 RCK52352
Firm RCK52450 RCK52357 RCK52353

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