QA1 GS507-10450C Pro Coil Front Single Adjustable Coilover Kit for GM B-Body

Vehicle Fitment

• 1963-1982 Chevrolet Corvette (with Small Block Chevy engine)
• 1977-1996 Chevrolet Impala / Caprice (B-Body)
• 1977-1990 Chevrolet Caprice Wagon / Impala Wagon (B-Body)
• 1971-1976 Chevrolet Bel Air / Biscayne / Del Ray (Full Size)
• 1977-1996 Buick Estate Wagon / LeSabre / Roadmaster (B-Body)
• 1977-1992 Oldsmobile Custom Cruiser / Delta 88 (B-Body)
• 1977-1986 Pontiac Parisienne / Bonneville (B-Body)
• Various Ford Full-Size / Galaxie models (verify application)

Fitment Notes

• Front position -- designed for small block Chevy engine weight (1,901-2,000 lbs front)
• Verify front-end weight for proper spring rate selection
• Bolt-in installation -- no cutting or welding required
• Upper mount: stud / Lower mount: bar pin
• 0-2" ride height lowering range
• Sold as a pair (2 shocks + 2 springs + hardware)

Features

• QA1 Pro Coil System -- single adjustable front coilover kit
• GS507 billet aluminum twin-tube coilover shocks
• 18-position simultaneous compression and rebound valving adjustment
• Fully threaded body for precise ride height adjustment
• American-made lightweight high-travel tapered springs (450 lb/in)
• Fewer coils and smaller wire diameter for increased travel
• 100% dyno tested and serialized
• Serviceable and rebuildable by QA1 authorized centers
• Made in the USA

Specifications

• System Type: Pro Coil Front Coilover
• Shock Model: GS507 (Single Adjustable)
• Shock Type: Twin-Tube
• Shock Body: Billet Aluminum, Clear Anodized
• Valving Positions: 18 (Simultaneous Compression/Rebound)
• Spring Rate: 450 lb/in
• Spring Length: 10"
• Spring Style: Tapered, High Travel
• Spring Finish: Silver Powder Coat
• Compressed Length: 9.63"
• Extended Length: 14.50"
• Threaded Adjustment Range: 3.0"
• Ride Height Adjustment: 0-2" Lowered
• Recommended Front Weight: 1,901-2,000 lbs
• Upper Mount: Stud
• Lower Mount: Bar Pin
• Gas Charged: No
• Welding Required: No
• Quantity: Pair

Included Components

• 2x QA1 GS507 single adjustable billet aluminum coilover shocks
• 2x QA1 10" high-travel tapered springs (450 lb/in)
• 1x Complete mounting hardware kit

Product Description

The QA1 GS507-10450C is a Pro Coil System front coilover kit featuring single adjustable GS507 billet aluminum twin-tube shocks paired with 450 lb/in high-travel tapered springs for 1963-1982 Chevrolet Corvettes with small block engines, 1971-1996 GM full-size vehicles, and select Ford full-size applications. The 18-position single adjustable valving allows simultaneous compression and rebound tuning from a soft, comfortable cruise setting to a firm, race-ready configuration -- making it easy to adapt the suspension from car-show cruising to autocross, road racing, or drag strip use without removing the shocks.

The fully threaded shock body provides up to 3 inches of threaded adjustment range for precise ride height tuning, with an overall lowering capability of 0 to 2 inches from stock height. The American-made high-travel springs feature fewer coils and a smaller wire diameter than conventional springs, resulting in increased suspension travel, reduced unsprung weight, and faster spring response for optimized handling. Each shock is 100% dyno tested and serialized for quality assurance, and is serviceable and rebuildable by QA1's factory or authorized service centers. Installation is a straightforward bolt-in process with no cutting or welding required. This kit is designed for vehicles with a recommended front-end weight of 1,901-2,000 lbs (typical of small block Chevy-equipped cars). Made in the USA by QA1.