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QA1 GD401-10400C

Pro Coil Front Coil-Over System Double Adjustable Shock

QA1 GD401-10400C

122-GD401-10400C

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QA1 GD401-10400C Pro Coil Front Coil-Over System Double Adjustable Shock $628.99
Pro Coil Front Coil-Over System
  • Double Adjustable Shock
  • 9'' Compressed / 12.8'' Extended Shock Height
  • 10'' Spring Free Length
  • 1800-1901 lbs. Front End Weight
  • 400 lbs/in. Spring Rate

  • QA1 GD401-10400C Details

    Spring Style "C"

  • 1973-1983 Chevelle / Malibu
  • 1975-1979 Nova / Omega / Skylark
  • 1973-87 El Camino / Regal / Cutlass Supreme / Grand Prix
  • 1973-1988 Monte Carlo
  • 1984-1987 Grand National
  • 1974-1977 GTO / Ventura
  • 1973-77 LeMans
  • 1982-2004 S10 Pickup

    Features:
  • Truly independent compression and rebound adjustment.
  • 18 positions of rebound on one knob and 18 positions of compression on the other knob, providing 324 valving options.
  • One shock allows for the ultimate in fine-tuning for any application.

    Shock Mount Type:
  • Stud Type Upper Mount
  • T-Bar Type Lower Mount

    *Notes: Some front applications may require the lower a-arm to be dropped for installation. Body diameter may be too large to allow mounting from the bottom. Some control arm's shock openings may need to be enlarged to accept a QA1 shock.

    Stud mounts are measured to the shoulder of the stud. Add 13/16'' for installed compressed length per stud mount. Loops and t-bars are measured to the center of the loop. Lengths may vary slightly.

  • Specifications:

    Manufacturer's Part Number:
    GD401-10400C

    Do you have a high-performance street/strip GM? The QA1 Double Adjustable Pro Coil System is the most versatile direct bolt-in front suspension on the market. No cutting or welding... these coil-over systems are designed to work with stock suspension and stock control arms (mounting bolt/nut assembly modification may be required).

    Take control of your vehicle's ride height, and get the stance you want with double adjustable valving that allows simple switching between one type of driving to another. Unlike many other shocks, the valving between compression and rebound can be adjusted independently. 18 positions of rebound on one knob and 18 positions of compression on the other knob, providing 324 valving options.

    The Pro Coil System Includes:

    • Two Proma Star double adjustable coil-over shocks
    • Two Specially Designed Conical Springs
    • All Mounting Hardware

      Easy Bolt-In Installation - Minimal modifications to be made. Remove the existing shocks and springs and the QA1 Pro Coil System bolts right back in.

      Ride Height Adjustable - Threaded aluminum shock body allows ride height adjustment.

      Specially Designed Conical Springs - This spring is designed so that the lower end sets on the coil-over shock and the upper end sets in the original spring bucket in the frame. This allows for the use of a longer and lighter spring for more stored energy, offering increased weight transfer. Greater durability is also achieved by locating the spring pressure in the frame and not on a single stud.

      Features
    • Systems include shocks, springs (rates below), and mounting hardware
    • Easy, Bolt-In Installation - Stock Location Using Stock Mount
    • Ride Height Adjustable
    • Remote Ready
    • 100% Dyno Tested and Serialized
    • Rebuildable & Revalvable by QA1 or QA1-Authorized Service Centers
    • Some replacement shocks sold individually
    • Proudly Made in Lakeville, MN USA!




      GM Pro Coil Coil Over Conversion Kits are also available in Single Adjustable and Drag Race "R" Series





      Spring Style ''A''
      Pigtail End
      3.50'' Upper ID
      2.50'' Lower ID

      Spring Style ''B''
      Flat End
      3.50'' Upper ID
      2.50'' Lower ID

      Spring Style ''C''
      Flat End
      4.10'' Upper ID
      2.50'' Lower ID

    Does QA1 GD401-10400C fit your vehicle?

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    1981 CHEVROLET MALIBU

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1973 CHEVROLET LAGUNA

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1981 PONTIAC LEMANS

    • Liter: 4.3
    • SubModel: SAFARI
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1997-1999 CHEVROLET S10 PICKUP

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1981 OLDSMOBILE CUTLASS

    • Liter: 4.4
    • SubModel: BROUGHAM
    • CUI: 267
    • EngineType: V8 ( 4.4 L / 267 )

    1978 BUICK SKYLARK

    • EngineType: ALL
    • SubModel: BASE

    1981 PONTIAC GRAND PRIX

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1975 BUICK APOLLO

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982 CHEVROLET MONTE CARLO

    • Liter: 4.4
    • SubModel: BASE
    • CUI: 267
    • EngineType: V8 ( 4.4 L / 267 )

    1974 CHEVROLET EL CAMINO

    • CC: 4097
    • Liter: 4.1
    • SubModel: CUSTOM
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1980 CHEVROLET MONTE CARLO

    • CC: 5031
    • Liter: 5.0
    • SubModel: SPORT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1999-2004 CHEVROLET SILVERADO 1500

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 294
    • EngineType: V8 ( 4.8 L / 294 )

    1974 GMC SPRINT

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1976-1977 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: VISTA CRUISER
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976 BUICK SKYLARK

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC GRAND AM

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 PONTIAC LEMANS

    • CC: 4098
    • Liter: 4.1
    • SubModel: SPORT
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1978-1979 OLDSMOBILE OMEGA

    • EngineType: ALL
    • SubModel: ALL

    1981 CHEVROLET MALIBU

    • CC: 3800
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    1976-1977 PONTIAC LEMANS

    • EngineType: ALL
    • SubModel: SPORT COUPE

    1977 PONTIAC LEMANS

    • Liter: 4.9
    • SubModel: SAFARI
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1977 PONTIAC GRAND PRIX

    • Liter: 6.6
    • SubModel: LJ
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1978 BUICK SKYLARK

    • EngineType: ALL
    • SubModel: S

    1977 OLDSMOBILE OMEGA

    • Liter: 5.7
    • SubModel: DELUXE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET LAGUNA

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1977-1978 PONTIAC GRAND PRIX

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1975 OLDSMOBILE CUTLASS

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975-1976 CHEVROLET MONTE CARLO

    • Liter: 5.7
    • SubModel: S
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1998-2000 GMC SONOMA

    • EngineType: ALL
    • SubModel: SL

    1977 OLDSMOBILE CUTLASS

    • Liter: 3.8
    • SubModel: COLONNADE
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    1975 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: CRUISER
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1979 PONTIAC GRAND PRIX

    • Liter: 4.9
    • SubModel: LJ
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1973 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1991 CHEVROLET S10 PICKUP

    • CC: 2474
    • Liter: 2.5
    • Aspiration: N
    • SubModel: BAJA
    • Engine Vin: A
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1996-1998 CHEVROLET S10 PICKUP

    • Liter: 4.3
    • Aspiration: N
    • SubModel: SS
    • Engine Vin: W
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1981 CHEVROLET MALIBU

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 PONTIAC LEMANS

    • CC: 4098
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979 PONTIAC LEMANS

    • EngineType: ALL
    • SubModel: BASE

    1979 CHEVROLET MALIBU

    • CC: 5031
    • Liter: 5.0
    • SubModel: SPORT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1973 CHEVROLET CHEVELLE

    • CC: 4098
    • Liter: 4.1
    • SubModel: DELUXE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1976-1977 OLDSMOBILE CUTLASS SUPREME

    • EngineType: ALL
    • SubModel: COLONNADE

    1975 CHEVROLET MONTE CARLO

    • Liter: 7.4
    • SubModel: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1974 PONTIAC LEMANS

    • CC: 7456
    • Liter: 7.5
    • SubModel: SAFARI
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1973-1974 CHEVROLET MALIBU

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 BUICK SKYLARK

    • Liter: 3.8
    • SubModel: S
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    1976 BUICK SKYLARK

    • Liter: 4.3
    • SubModel: S
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1977 OLDSMOBILE CUTLASS

    • Liter: 6.6
    • SubModel: VISTA CRUISER
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1975-1976 CHEVROLET LAGUNA

    • EngineType: ALL
    • SubModel: ALL

    1975 OLDSMOBILE CUTLASS

    • EngineType: ALL
    • SubModel: 442

    1974 PONTIAC GRAND PRIX

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1974 GMC SPRINT

    • CC: 6556
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1977 BUICK CENTURY

    • EngineType: ALL
    • SubModel: ALL

    1973 CHEVROLET CHEVELLE

    • CC: 5737
    • Liter: 5.7
    • SubModel: DELUXE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 PONTIAC VENTURA

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976 PONTIAC VENTURA

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1973-1974 OLDSMOBILE CUTLASS

    • CC: 5737
    • Liter: 5.7
    • SubModel: S
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1977 PONTIAC LEMANS

    • Liter: 6.6
    • SubModel: SPORT
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: LANDAU

    1981 PONTIAC LEMANS

    • CC: 3800
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    1976-1977 OLDSMOBILE OMEGA

    • Liter: 5.7
    • SubModel: F85
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 PONTIAC VENTURA

    • Liter: 3.8
    • SubModel: BASE
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    1973 CHEVROLET EL CAMINO

    • CC: 4098
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1973 CHEVROLET LAGUNA

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 PONTIAC LEMANS

    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1995-1997 GMC SONOMA

    • CC: 2190
    • Liter: 2.2
    • SubModel: SL
    • CUI: 134
    • EngineType: L4 ( 2.2 L / 134 )

    1975 OLDSMOBILE CUTLASS SUPREME

    • EngineType: ALL
    • SubModel: HURST

    1980 CHEVROLET MALIBU

    • Liter: 5.7
    • SubModel: SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET EL CAMINO

    • CC: 5031
    • Liter: 5.0
    • SubModel: CUSTOM
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1973 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: ESTATE
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 CHEVROLET MALIBU

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: CLASSIC
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET MALIBU

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 PONTIAC LEMANS

    • Liter: 5.0
    • SubModel: SPORT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975 PONTIAC GRAND PRIX

    • EngineType: ALL
    • SubModel: SJ

    1980 CHEVROLET MONTE CARLO

    • Liter: 4.4
    • SubModel: SPORT
    • CUI: 267
    • EngineType: V8 ( 4.4 L / 267 )

    1974 CHEVROLET MONTE CARLO

    • CC: 6556
    • Liter: 6.6
    • SubModel: LANDAU
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974 CHEVROLET LAGUNA

    • CC: 7441
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973-1974 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: ESTATE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 CHEVROLET NOVA

    • Liter: 4.1
    • SubModel: POLICE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975 OLDSMOBILE CUTLASS

    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1976 CHEVROLET MALIBU

    • CC: 5031
    • Liter: 5.0
    • SubModel: CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981 CHEVROLET MALIBU

    • Liter: 3.8
    • SubModel: BASE
    • CUI: 229
    • EngineType: V6 ( 3.8 L / 229 )

    1976 CHEVROLET NOVA

    • Liter: 5.7
    • SubModel: CONCOURS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985-1987 OLDSMOBILE CUTLASS

    • EngineType: ALL
    • SubModel: ALL

    1973 PONTIAC LEMANS

    • CC: 7457
    • Liter: 7.5
    • SubModel: SAFARI
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1980-1981 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978 BUICK SKYLARK

    • Liter: 5.0
    • SubModel: SPORT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976 PONTIAC LEMANS

    • Liter: 4.3
    • SubModel: SPORT
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    2001 GMC SONOMA

    • Liter: 4.3
    • SubModel: SLE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1974 PONTIAC LEMANS

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1985 CHEVROLET MONTE CARLO

    • CC: 3800
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    1974 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 CHEVROLET EL CAMINO

    • EngineType: ALL
    • SubModel: SS

    1976 CHEVROLET MALIBU

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1973 PONTIAC LEMANS

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976 OLDSMOBILE CUTLASS

    • Liter: 7.5
    • SubModel: S
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1973-1974 CHEVROLET MALIBU

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC LEMANS

    • EngineType: ALL
    • SubModel: SAFARI LUXURY
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