The QA1 GM Pro Front Coil-Over System delivers fully adjustable ride height and valving control for classic GM muscle. Built around a lightweight billet aluminum coil-over shock with a fully threaded body, it lets the ride height be dialed in for the right stance or to fine-tune weight balance for improved handling. The American-made high-travel spring uses fewer coils and a smaller wire diameter for added travel, reduced unsprung weight and faster reaction. This single adjustable version is 100 percent dyno tested and serialized, rebuildable by QA1 authorized service centers, bolts in with factory or upgraded QA1 tubular control arms, and is made in the USA. Sold in pairs.
Specifications:
- Type: QA1 Pro front coil-over system (sold in pairs)
- Adjustability: Single Adjustable (independent valving adjustment)
- Shock body: Billet Aluminum, fully threaded
- Spring: 10in length, 400 lb/in rate, high-travel
- Spring/mount style: Pigtail
- Installation: bolt-in
- Warranty: Limited Lifetime
- Made in: USA
- Part number: GS401-10400A
Vehicle Applications:
- 1973 Buick Apollo
- 1974 Buick Apollo
- 1967 Chevrolet Camaro
- 1968 Chevrolet Camaro
- 1969 Chevrolet Camaro
- 1968 Chevrolet Chevy II
- 1969 Chevrolet Nova
- 1970 Chevrolet Nova
- 1971 Chevrolet Nova
- 1972 Chevrolet Nova
- 1973 Chevrolet Nova
- 1974 Chevrolet Nova
- 1973 Oldsmobile Omega
- 1974 Oldsmobile Omega
- 1967 Pontiac Firebird
- 1968 Pontiac Firebird
- 1969 Pontiac Firebird
- 1971 Pontiac Ventura
- 1972 Pontiac Ventura
- 1973 Pontiac Ventura
- 1974 Pontiac Ventura
FAQ
What does QA1 part number GS401-10400A fit?
QA1 GS401-10400A is listed to fit 1967-1974 Camaro, Firebird & Nova. The Vehicle Applications list above shows the individual years, makes and models from the QA1 fitment data for this part.
Is this coil-over single or double adjustable?
This is the single adjustable version, which adjusts compression and rebound valving together through one adjustment for simple tuning.
What spring is included?
It is supplied with a QA1 high-travel spring measuring 10in in length with a 400 lb/in spring rate.
Can ride height be adjusted?
Yes. The fully threaded shock body allows the ride height to be adjusted to set the stance or fine-tune weight balance.
Is professional installation required?
The system is designed as a bolt-in installation using standard hand tools, so no welding or fabrication is required for a typical fitment.
