$104 Off

QA1 GD507-10400C GM Pro Coil System, Double Adj, Tapered Flat Lrg

$104 Off

#721GD50710400C

QA1 GD507-10400C GM Pro Coil System, Double Adj, Tapered Flat Lrg

These QA1 GM Pro Coil Systems are available for 1971-1996 Impalas and Full Size GM vehicles, including Full Size Chevy, Buick, Oldsmobile and Pontiac models, and are a great option for anyone looking for fully adjustable ride height and valving control
Choose a spring rate and adjustability that fits your driving style, adjust the valving to match and you are on your way

Spring Rate:

400 lbs.

350 lbs.450 lbs.500 lbs.550 lbs.600 lbs.650 lbs.750 lbs.

$964.95

Factory Shipped

$1,069.01

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Product Summary

Bel Air, Caprice, Impala, Biscayne, Del Ray, Black

These QA1 GM Pro Coil Systems are available for 1971-1996 Impalas and Full Size GM vehicles, including Full Size Chevy, Buick, Oldsmobile and Pontiac models, and are a great option for anyone looking for fully adjustable ride height and valving control
Choose a spring rate and adjustability that fits your driving style, adjust the valving to match and you are on your way
These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling
Specially designed for QA1's Pro Coil Systems, the American-made lightweight high travel springs have fewer coils and a smaller wire diameter, resulting in increased travel due to the larger distance between the coils
They reduce unsprung weight and react faster, optimizing suspension performance

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Key Specs

Position	Front
Spring Rate	400 lbs.
Shock Adjustability	Double Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum

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QA1 GD507-10400C Details

These QA1 GM Pro Coil Systems are available for 1971-1996 Impalas and Full Size GM vehicles, including Full Size Chevy, Buick, Oldsmobile and Pontiac models, and are a great option for anyone looking for fully adjustable ride height and valving control
Choose a spring rate and adjustability that fits your driving style, adjust the valving to match and you are on your way
These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling
Specially designed for QA1's Pro Coil Systems, the American-made lightweight high travel springs have fewer coils and a smaller wire diameter, resulting in increased travel due to the larger distance between the coils
They reduce unsprung weight and react faster, optimizing suspension performance
Multiple spring rate options are also available and have been successfully tested in various applications, from casual street driving to hard core race applications
Lightweight Billet Aluminum Coil-Over Shocks
High Travel Springs
Easy, Bolt-In Installation, Ride Height Adjustable, 100% Dyno Tested and Serialized
Serviceable and Rebuildable by QA1 Authorized Service Centers
Made in the USA
Used in drag racing, street performance, autocross, road racing and street rod applications
Sold in Pairs

Guides & Documents

Coilovers Installation Instructions (721GD50710400C)

Warranty (QA1)

Technical Information (QA1)

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

QA1 GD507-10400C Specifications

KEY SPECS
MFG. Part #	GD507-10400C
Brand	QA1
Position	Front
Spring Rate	400 lbs.
Shock Adjustability	Double Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum
Shock Stroke	5.00
Upper Shock Mount	Stud
Lower Shock Mount	T-Bar
Height Adjustable	Yes
Finish	Powder Coated

GENERAL
Compressed Length Range	9.00" to 9.99"
Compressed Length	9.63"
Extended Length Range	14.00" to 14.99"
Extended Length	14.5"
Number of Valving Selections	324
Coilover Springs Included	Yes
Bushing Material	Polyurethane
Sold in Quantity	Pair
Adjustable	Yes
Hardware Included	Yes
Crossmember Included	No
Welding Required	No
Gas Charged	No
Color	Silver
Suspension Height Adjustment	0.0-2.0 Inch Lowered
Spring Finish	Powder Coated
Recommended Front End Weight	1,801-1,900 lbs.
Notes	Designed to fit applications with small block engines. Coilover shocks are double adjustable Pro series GD507 shocks. Springs are 10 tapered with a large diameter, flat upper end style 10HTBF400 springs.
GTIN Code	806990136596
Adjustable Valving	Yes
Adjustable Mounting Bracket Included	No
Bushing Color	Black
Lower Mount	T-bar
Upper Mount	Stud

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Fitment

1958-1981 Chevy Bel Air

1958-1972 Chevy Biscayne

1966-1991 Chevy Caprice

1958 Chevy Del Ray

1971-1996 Chevy Impala