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QA1 GD401-10450C

Pro Coil Front Coil-Over System Double Adjustable Shock

QA1 GD401-10450C

122-GD401-10450C

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QA1 GD401-10450C 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
  • 1900-2001 lbs. Front End Weight
  • 450 lbs/in. Spring Rate

  • QA1 GD401-10450C 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:

    Bushing Material
    Polyurethane
    Bushing Color
    Black
    Hardware Included
    Yes
    Gas Charged
    No
    Adjustable Mounting Bracket Included
    No
    Adjustable Valving
    Yes
    Coil-Over Kit Position
    Front
    Coil-Over Springs Included
    Yes
    Crossmember Included
    No
    Internal Design
    Twin-tube
    Number of Valving Selections
    324
    Quantity
    Sold as a kit
    Recommended Front-End Weight (lbs.)
    1,901-2,100
    Shock Body Finish
    Clear anodized
    Shock Body Material
    Aluminum
    Shocks Included
    Yes
    Spring Rate
    450 lbs./in.
    Suspension Height Adjustment
    Stock
    Welding Required
    No
    Spring Finish
    Silver powdercoated
    Manufacturer's Part Number:
    GD401-10450C

    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 GD401-10450C fit your vehicle?

    Narrow Results

    1976 OLDSMOBILE OMEGA

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

    1974 GMC SPRINT

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

    1980 OLDSMOBILE CUTLASS

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

    1975 OLDSMOBILE CUTLASS

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

    1981 CHEVROLET MALIBU

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

    1978-1987 PONTIAC BONNEVILLE

    • EngineType: ALL
    • SubModel: ALL

    1985-1988 CHEVROLET MONTE CARLO

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

    1997-1999 CHEVROLET S10 PICKUP

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

    1976 PONTIAC VENTURA

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

    1976 OLDSMOBILE CUTLASS

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

    1976-1977 PONTIAC GRAND PRIX

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

    1977 OLDSMOBILE CUTLASS

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

    1977 OLDSMOBILE OMEGA

    • Liter: 5.0
    • SubModel: F85
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975-1976 CHEVROLET MALIBU

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

    1981 PONTIAC GRAND PRIX

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

    1975-1976 CHEVROLET MALIBU

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

    1981 CHEVROLET MALIBU

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

    1976 PONTIAC GRAND PRIX

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

    1973 CHEVROLET MALIBU

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

    1978-1979 PONTIAC GRAND PRIX

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

    1977-1978 PONTIAC GRAND PRIX

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

    1977 OLDSMOBILE OMEGA

    • Liter: 3.8
    • SubModel: F85
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    1973 CHEVROLET LAGUNA

    • EngineType: ALL
    • SubModel: ESTATE

    2002-2003 CHEVROLET S10 PICKUP

    • Liter: 4.3
    • SubModel: ZR5
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1973-1974 OLDSMOBILE CUTLASS

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

    1975 OLDSMOBILE OMEGA

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

    1975-1976 CHEVROLET MALIBU

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

    1973 PONTIAC LEMANS

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

    1977 OLDSMOBILE CUTLASS

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

    1978-1980 PONTIAC GRAND AM

    • EngineType: ALL
    • SubModel: ALL

    1977 OLDSMOBILE OMEGA

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

    2004 CHEVROLET SILVERADO 1500

    • EngineType: ALL
    • SubModel: SS

    1999-2004 CHEVROLET SILVERADO 1500

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

    1975 BUICK APOLLO

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

    1978-1979 PONTIAC LEMANS

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

    1978 BUICK SKYLARK

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

    1982-1984 CHEVROLET MONTE CARLO

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981 OLDSMOBILE CUTLASS

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

    1981 PONTIAC LEMANS

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

    1977 PONTIAC GRAND PRIX

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

    1985-1987 CHEVROLET MONTE CARLO

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

    1977 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: S

    1976 CHEVROLET MALIBU

    • EngineType: ALL
    • SubModel: CLASSIC LANDAU

    1977 PONTIAC VENTURA

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

    1975 CHEVROLET MALIBU

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

    1976 CHEVROLET MALIBU

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

    1973 CHEVROLET MALIBU

    • 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 )

    1974 PONTIAC GRAND PRIX

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

    1975 BUICK APOLLO

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

    1974 CHEVROLET EL CAMINO

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

    1999 CHEVROLET S10 PICKUP

    • Engine Vin: H
    • EngineType: E1 ( )
    • SubModel: BASE

    1974 PONTIAC LEMANS

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

    1978 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: SPORT

    1981-1987 GMC CABALLERO

    • EngineType: ALL
    • SubModel: ALL

    1976-1977 OLDSMOBILE OMEGA

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

    1977 OLDSMOBILE CUTLASS

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

    1973-1974 PONTIAC LEMANS

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

    1974 PONTIAC GRAND AM

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

    1978 PONTIAC GRAND PRIX

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

    1978 BUICK SKYLARK

    • EngineType: ALL
    • SubModel: BASE

    1975 OLDSMOBILE CUTLASS

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

    1975 BUICK APOLLO

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

    1981 OLDSMOBILE CUTLASS

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

    1975 OLDSMOBILE CUTLASS SUPREME

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

    1981 PONTIAC LEMANS

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

    1975-1976 OLDSMOBILE CUTLASS SUPREME

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

    1974 PONTIAC GRAND AM

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

    1975-1976 CHEVROLET MALIBU

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

    1976 PONTIAC VENTURA

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

    1980 OLDSMOBILE CUTLASS

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

    1977-1978 PONTIAC LEMANS

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

    1985-1988 CHEVROLET MONTE CARLO

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

    1977-1979 PONTIAC LEMANS

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

    1975 OLDSMOBILE CUTLASS

    • EngineType: ALL
    • SubModel: 442

    1978-1979 PONTIAC LEMANS

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

    1978-1979 OLDSMOBILE OMEGA

    • EngineType: ALL
    • SubModel: ALL

    1999-2004 CHEVROLET SILVERADO 1500

    • CC: 5328
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    1974 PONTIAC LEMANS

    • EngineType: ALL
    • SubModel: SAFARI LUXURY

    1979-1980 CHEVROLET MALIBU

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

    2001-2003 CHEVROLET S10 PICKUP

    • EngineType: ALL
    • SubModel: ZR2

    1978 BUICK SKYLARK

    • EngineType: ALL
    • SubModel: S

    1994-1999 CHEVROLET S10 PICKUP

    • EngineType: ALL
    • SubModel: ZR2

    1976-1977 PONTIAC LEMANS

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

    1975 PONTIAC GRAND PRIX

    • EngineType: ALL
    • SubModel: LJ

    1975 CHEVROLET NOVA

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V8 ( 4.3 L / 262 )

    1977 PONTIAC LEMANS

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

    1981 PONTIAC GRAND PRIX

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

    1976-1977 PONTIAC LEMANS

    • EngineType: ALL
    • SubModel: SPORT COUPE

    1977 OLDSMOBILE OMEGA

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

    1977 PONTIAC VENTURA

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

    1980 OLDSMOBILE CUTLASS

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

    2004 CHEVROLET SILVERADO 1500

    • CC: 5328
    • Liter: 5.3
    • SubModel: HYBRID
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    1977 PONTIAC GRAND PRIX

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

    1999-2004 CHEVROLET SILVERADO 1500

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

    1980 PONTIAC GRAND PRIX

    • EngineType: ALL
    • SubModel: ALL

    1976 CHEVROLET NOVA

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

    1973 PONTIAC LEMANS

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

    1974 PONTIAC LEMANS

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

    1981 CHEVROLET MALIBU

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