Free Shipping & Handling on Orders Over $95 - Order by 11pm EST for Same-Day Shipping!
0
My Cart
$0.00
Shop By
Category
All Categories

Rebates
Gift Certificates
My Account
E-Mail Signup
Catalog Request
Help

QA1 GD401-10500C

Pro Coil Front Coil-Over System Double Adjustable Shock



QA1 GD401-10500C

Part Number: 122-GD401-10500C

Pro Coil Front Coil-Over System
  • Double Adjustable Shock
  • 9'' Compressed / 12.8'' Extended Shock Height
  • 10'' Spring Free Length
  • 2000-2101 lbs. Front End Weight
  • 500 lbs/in. Spring Rate
  • $628.99
    Ships 10/11/16
    if Ordered Today
    FREE Shipping
    QA1 GD401-10500C Pro Coil Front Coil-Over System Double Adjustable Shock $628.99

    QA1 GD401-10500C 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:

    Collapsed Length (in.)
    9.000
    Bushing Material
    Polyurethane
    Hardware Included
    Yes
    Body Diameter (in.)
    2
    Gas Charged
    No
    EXTENDED LENGTH (in.)
    12.8
    Adjustable Mounting Bracket Included
    No
    Adjustable Valving
    Yes
    Bushing Color
    Black
    Coil-Over Kit Position
    Front
    Coil-Over Springs Included
    Yes
    Crossmember Included
    No
    Number of Valving Selections
    324
    Quantity
    Sold as a kit
    Recommended Front-End Weight
    2,001-2,100 lbs
    Shock Body Finish
    Clear anodized
    Shock Body Material
    Aluminum
    Shocks Included
    Yes
    Spring Rate
    500 lbs./in.
    Suspension Height Adjustment (in.)
    0.0-2.0 lowered front
    Threaded Adjustment Range (in.)
    4.5
    Welding Required
    No
    Spring Finish
    Silver powdercoated
    Upper Mount
    Stud
    Lower Mount
    Tie bar
    Manufacturer's Part Number:
    GD401-10500C

    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. Made in the USA.

    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.

    Highlights
  • 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




    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 GD401-10500C fit your vehicle?

    Narrow Results

    1974 CHEVROLET MALIBU

    • CC: 5737
    • Liter: 5.7
    • SubModel: CLASSIC
    • EngineType: V8

    1977 OLDSMOBILE OMEGA

    • Liter: 3.8
    • SubModel: DELUXE
    • CUI: 231
    • EngineType: V6

    1975 BUICK APOLLO

    • Liter: 5.7
    • SubModel: SR
    • CUI: 350
    • EngineType: V8

    1976-1977 PONTIAC LEMANS

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1980 CHEVROLET MALIBU

    • Liter: 5.7
    • SubModel: SPORT
    • CUI: 350
    • EngineType: V8

    1973-1974 PONTIAC LEMANS

    • EngineType: L6
    • SubModel: SAFARI

    1979 CHEVROLET MALIBU

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SPORT

    1973-1974 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1981 PONTIAC GRAND PRIX

    • Liter: 4.3
    • SubModel: BROUGHAM
    • CUI: 265
    • EngineType: V8

    1977 PONTIAC LEMANS

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8

    1973-1974 PONTIAC LEMANS

    • EngineType: L6
    • SubModel: SPORT

    1973 CHEVROLET EL CAMINO

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 350
    • EngineType: V8

    1975-1976 BUICK SKYLARK

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8

    1976 CHEVROLET NOVA

    • Liter: 5.7
    • SubModel: CONCOURS
    • CUI: 350
    • EngineType: V8

    1977 OLDSMOBILE CUTLASS

    • Liter: 6.6
    • SubModel: S
    • CUI: 403
    • EngineType: V8

    1973 CHEVROLET EL CAMINO

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8

    1975 PONTIAC LEMANS

    • EngineType: ALL
    • SubModel: ALL

    1977 OLDSMOBILE OMEGA

    • Liter: 3.8
    • SubModel: F85
    • CUI: 231
    • EngineType: V6

    1979 PONTIAC LEMANS

    • Liter: 4.9
    • SubModel: SAFARI
    • CUI: 301
    • EngineType: V8

    1978-1979 PONTIAC GRAND PRIX

    • Liter: 5.0
    • SubModel: SJ
    • CUI: 305
    • EngineType: V8

    1973-1974 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • SubModel: SAFARI
    • EngineType: V8

    1973 CHEVROLET CHEVELLE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: DELUXE

    2002 CHEVROLET SILVERADO 1500

    • EngineType: ALL
    • SubModel: CUSTOM

    1976 PONTIAC VENTURA

    • Liter: 4.3
    • SubModel: SJ
    • CUI: 260
    • EngineType: V8

    1979 PONTIAC LEMANS

    • Liter: 4.4
    • EngineType: V8
    • SubModel: SAFARI

    1977 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • EngineType: V8
    • SubModel: COLONNADE

    1979 CHEVROLET MONTE CARLO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1980-1982 CHEVROLET MALIBU

    • Liter: 3.8
    • SubModel: CLASSIC
    • CUI: 229
    • EngineType: V6

    1978 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: SPORT

    1980 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8

    1973-1988 BUICK REGAL

    • EngineType: ALL
    • SubModel: ALL

    1974 PONTIAC GRAND AM

    • CC: 5733
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1973-1974 CHEVROLET MALIBU

    • EngineType: L6
    • SubModel: ESTATE

    1973-1974 CHEVROLET MONTE CARLO

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1973-1974 CHEVROLET MALIBU

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1978-1979 PONTIAC LEMANS

    • Liter: 5.0
    • SubModel: SAFARI
    • CUI: 305
    • EngineType: V8

    1975-1976 GMC SPRINT

    • EngineType: ALL
    • SubModel: CLASSIC

    1973-1974 PONTIAC LEMANS

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1973 CHEVROLET EL CAMINO

    • CC: 5031
    • Liter: 5.0
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 307
    • EngineType: V8

    1973 OLDSMOBILE CUTLASS

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

    1977 CHEVROLET MALIBU

    • EngineType: V8
    • SubModel: BASE

    2002-2004 CHEVROLET SILVERADO 1500

    • EngineType: ALL
    • SubModel: WT

    1977-1978 PONTIAC GRAND PRIX

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8

    1973 PONTIAC LEMANS

    • CC: 5733
    • Liter: 5.7
    • Aspiration: N
    • SubModel: SPORT
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8

    1981 PONTIAC GRAND PRIX

    • Liter: 4.4
    • EngineType: V8
    • SubModel: LJ

    1977 PONTIAC VENTURA

    • Liter: 4.9
    • SubModel: SJ
    • CUI: 301
    • EngineType: V8

    1977 OLDSMOBILE OMEGA

    • Liter: 5.0
    • SubModel: BROUGHAM
    • CUI: 305
    • EngineType: V8

    1974 BUICK CENTURY

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: LUXUS
    • Engine Vin: R
    • CUI: 455
    • EngineType: V8

    1981 CHEVROLET MALIBU

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1975-1976 OLDSMOBILE CUTLASS

    • Liter: 4.1
    • SubModel: S
    • CUI: 250
    • EngineType: L6

    1975 OLDSMOBILE OMEGA

    • Liter: 5.7
    • SubModel: SALON
    • CUI: 350
    • EngineType: V8

    1973 GMC SPRINT

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1973 CHEVROLET EL CAMINO

    • Liter: 7.4
    • SubModel: CUSTOM
    • CUI: 454
    • EngineType: V8

    1974 OLDSMOBILE CUTLASS

    • CC: 5733
    • Liter: 5.7
    • Aspiration: N
    • SubModel: S
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8

    1973-1974 CHEVROLET MALIBU

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1973-1974 PONTIAC GRAND PRIX

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1973 CHEVROLET LAGUNA

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1976 CHEVROLET NOVA

    • Liter: 4.1
    • SubModel: CONCOURS
    • CUI: 250
    • EngineType: L6

    1973 CHEVROLET CHEVELLE

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: DELUXE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8

    1973-1974 OLDSMOBILE CUTLASS

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8

    1977 OLDSMOBILE OMEGA

    • Liter: 5.0
    • SubModel: F85
    • CUI: 305
    • EngineType: V8

    1976 OLDSMOBILE CUTLASS

    • Liter: 7.5
    • SubModel: VISTA CRUISER
    • CUI: 455
    • EngineType: V8

    1973-1974 CHEVROLET MALIBU

    • CC: 5736
    • Liter: 5.7
    • SubModel: ESTATE
    • CUI: 350
    • EngineType: V8

    1979-1987 CHEVROLET EL CAMINO

    • EngineType: ALL
    • SubModel: ALL

    1975-1976 BUICK SKYLARK

    • Liter: 4.3
    • SubModel: SR
    • CUI: 260
    • EngineType: V8

    1974 CHEVROLET MALIBU

    • CC: 5736
    • Liter: 5.7
    • SubModel: CLASSIC
    • CUI: 350
    • EngineType: V8

    1975 CHEVROLET MALIBU

    • Liter: 7.4
    • SubModel: CLASSIC
    • CUI: 454
    • EngineType: V8

    1974 GMC SPRINT

    • Liter: 5.7
    • EngineType: V8
    • SubModel: CUSTOM

    1976 PONTIAC LEMANS

    • Liter: 4.1
    • SubModel: SPORT
    • CUI: 250
    • EngineType: L6

    1974 PONTIAC GRAND AM

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1974 OLDSMOBILE CUTLASS

    • CC: 5737
    • Liter: 5.7
    • SubModel: S
    • EngineType: V8

    1975-1976 CHEVROLET NOVA

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1981 PONTIAC LEMANS

    • Liter: 4.3
    • SubModel: SAFARI
    • CUI: 265
    • EngineType: V8

    1973 CHEVROLET CHEVELLE

    • CC: 5736
    • Liter: 5.7
    • SubModel: DELUXE
    • CUI: 350
    • EngineType: V8

    1975 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1973 BUICK CENTURY

    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 455
    • EngineType: V8

    1974 BUICK CENTURY

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8

    1976 BUICK SKYLARK

    • Liter: 3.8
    • SubModel: S
    • CUI: 231
    • EngineType: V6

    1977 CHEVROLET EL CAMINO

    • EngineType: ALL
    • SubModel: CLASSIC

    1977 PONTIAC VENTURA

    • Liter: 3.8
    • SubModel: BASE
    • CUI: 231
    • EngineType: V6

    1982 CHEVROLET MALIBU

    • Liter: 4.3
    • SubModel: CLASSIC
    • CUI: 260
    • EngineType: V6

    1981 PONTIAC GRAND PRIX

    • Liter: 5.7
    • SubModel: LJ
    • CUI: 350
    • EngineType: V8

    1973 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1974 OLDSMOBILE CUTLASS SUPREME

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1977 OLDSMOBILE CUTLASS SUPREME

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8

    1973 CHEVROLET MALIBU

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1975 OLDSMOBILE CUTLASS

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8

    1973-1974 OLDSMOBILE CUTLASS

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: S
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8

    1976 CHEVROLET NOVA

    • EngineType: ALL
    • SubModel: SS

    1979 CHEVROLET MALIBU

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CLASSIC

    1976-1977 PONTIAC GRAND PRIX

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1974 PONTIAC LEMANS

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1979 CHEVROLET MONTE CARLO

    • EngineType: V6
    • SubModel: BASE

    1975 OLDSMOBILE CUTLASS

    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6

    1975-1976 CHEVROLET MALIBU

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1999 CHEVROLET S10 PICKUP

    • EngineType: L4
    • SubModel: BASE

    1974-1976 CHEVROLET LAGUNA

    • EngineType: ALL
    • SubModel: ALL

    1974 GMC SPRINT

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1981 PONTIAC LEMANS

    • Liter: 3.8
    • SubModel: BASE
    • CUI: 229
    • EngineType: V6

    1973-1974 CHEVROLET MALIBU

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8
    Items You Need