Detroit Speed Coilover Front Conversion Kit - Base Shocks - BBC (1968-1972 GM A-Body) - 030309DS
Upgrade your big-block GM A-Body with modern coilover suspension technology using the Detroit Speed 030309DS Front Coilover Conversion Kit. Engineered for 1968-1972 GM A-Body applications with Big Block Chevrolet engines, this direct bolt-in system combines application-specific coilover springs with aluminum-body shocks featuring Detroit Tuned valving. The result is extensive ride-height adjustability, improved suspension control, and excellent street ride quality in a complete package engineered specifically for your classic.
The 030309DS uses base non-adjustable coilover shocks with Detroit Tuned valving. Detroit Speed engineers the shock damping to deliver a balanced combination of ride quality and performance without requiring external shock adjustments. This makes the base-shock package an excellent choice for enthusiasts who want the benefits of a modern coilover conversion and adjustable ride height with a straightforward, proven shock setup.
Detroit Speed pairs the shocks with 650 pounds/inch coilover springs with a 9.5 inch free length for Big Block Chevrolet applications. The coilover configuration allows the front ride height to be adjusted to suit the vehicle and desired stance. The included thrust bearings and thrust washers assist with spring adjustment, while the supplied Detroit Speed spanner tool makes coilover adjustments easier.
The 030309DS is a direct bolt-in front coilover conversion designed to bring modern spring and shock technology to the 1968-1972 GM A-Body platform. Detroit Speed includes the necessary conversion components, including two Detroit Speed Tuned coilover shocks, two coilover springs, spring adjusting nuts, flat washers, rubber insulators, thrust bearings, thrust washers, mounting hardware, a spanner tool, and installation instructions. Instead of piecing together a suspension package from unrelated components, you get a complete system engineered to work together.
Whether you're modernizing a big-block Chevelle, GTO, Skylark, Cutlass, El Camino, Monte Carlo, or another compatible GM A-Body, the Detroit Speed 030309DS provides a strong foundation for improved front suspension performance. Its combination of 650 pounds/inch springs, Detroit Tuned base shocks, extensive ride-height adjustability, and bolt-in installation makes it an excellent choice for street performance, restomod, and Pro-Touring builds.
Quick Specs
- Part Number: 030309DS
- Manufacturer: Detroit Speed
- Product Type: Front Coilover Conversion Kit
- Application: 1968-1972 GM A-Body
- Engine Application: Big Block Chevrolet
- Position: Front
- Shock Type: Base / Non-Adjustable Coilover
- Shock Body: Aluminum
- Shock Valving: Detroit Tuned
- Spring Rate: 650 Pounds/Inch
- Spring Free Length: 9.5 Inches
- Extensive Ride-Height Adjustability
- Installation Type: Direct Bolt-In
- Detroit Speed Tuned Coilover Shocks: 2
- Coilover Springs: 2
- Coilover Spring Adjusting Nuts: 2
- Flat Washers: 4
- Rubber Insulators: 4
- 5/8-18 Upper Mounting Nylock Nut: 1
- Thrust Bearings: 2
- Thrust Washers: 4
- 3/8-24 x 1.5 Inch Hex Head Bolts: 4
- 3/8-24 Nylock Nuts: 4
- 3/8 Inch AN Washers: 4
- Detroit Speed Spanner Tool: 1
- Installation Instructions Included
- Emission Code: 4
Features
- Direct bolt-in front coilover conversion engineered for 1968-1972 GM A-Body applications with Big Block Chevrolet engines
- Upgrades the classic A-Body with modern coilover spring and shock technology
- Base non-adjustable shocks provide a straightforward setup without external damping adjustments
- Aluminum-body coilover shocks feature Detroit Tuned valving
- Detroit Tuned valving is engineered to provide excellent ride quality and responsive suspension performance
- 650 pounds/inch spring rate for Big Block Chevrolet applications
- 9.5 inch spring free length
- Coilover design provides extensive ride-height adjustability
- Allows front ride height and vehicle stance to be tailored to the individual build
- Thrust bearings and thrust washers assist with coilover spring adjustment
- Rubber insulators and required mounting hardware are included
- Detroit Speed spanner tool is supplied for convenient shock and spring adjustment
- Complete conversion package includes the necessary components for installation
- Excellent choice for street performance, restomod, and Pro-Touring GM A-Body builds
Fitment
- 1970 Buick GS
- 1971 Buick GS
- 1972 Buick GS
- 1968 Buick GS 350
- 1969 Buick GS 350
- 1968 Buick GS 400
- 1969 Buick GS 400
- 1970 Buick GS 455
- 1971 Buick GS 455
- 1972 Buick GS 455
- 1968 Buick Skylark
- 1969 Buick Skylark
- 1970 Buick Skylark
- 1971 Buick Skylark
- 1972 Buick Skylark
- 1968 Chevrolet Chevelle
- 1969 Chevrolet Chevelle
- 1970 Chevrolet Chevelle
- 1971 Chevrolet Chevelle
- 1972 Chevrolet Chevelle
- 1968 Chevrolet El Camino
- 1969 Chevrolet El Camino
- 1970 Chevrolet El Camino
- 1971 Chevrolet El Camino
- 1972 Chevrolet El Camino
- 1970 Chevrolet Monte Carlo
- 1971 Chevrolet Monte Carlo
- 1972 Chevrolet Monte Carlo
- 1971 GMC Sprint
- 1972 GMC Sprint
- 1968 Oldsmobile 442
- 1969 Oldsmobile 442
- 1970 Oldsmobile 442
- 1971 Oldsmobile 442
- 1968 Oldsmobile Cutlass
- 1969 Oldsmobile Cutlass
- 1970 Oldsmobile Cutlass
- 1971 Oldsmobile Cutlass
- 1972 Oldsmobile Cutlass
- 1968 Oldsmobile Cutlass Supreme
- 1969 Oldsmobile Cutlass Supreme
- 1970 Oldsmobile Cutlass Supreme
- 1971 Oldsmobile Cutlass Supreme
- 1972 Oldsmobile Cutlass Supreme
- 1968 Oldsmobile Vista Cruiser
- 1969 Oldsmobile Vista Cruiser
- 1970 Oldsmobile Vista Cruiser
- 1971 Oldsmobile Vista Cruiser
- 1972 Oldsmobile Vista Cruiser
- 1968 Pontiac GTO
- 1969 Pontiac GTO
- 1970 Pontiac GTO
- 1971 Pontiac GTO
- 1972 Pontiac GTO
- 1968 Pontiac LeMans
- 1969 Pontiac LeMans
- 1970 Pontiac LeMans
- 1971 Pontiac LeMans
- 1972 Pontiac LeMans
- 1968 Pontiac Tempest
- 1969 Pontiac Tempest
- 1970 Pontiac Tempest
Fitment Note: The 030309DS is the base/non-adjustable Big Block Chevrolet version of Detroit Speed's Front Coilover Conversion Kit for 1968-1972 GM A-Body applications. It uses 650 pounds/inch springs with a 9.5 inch free length. Use the supplied Detroit Speed spanner tool when making coilover spring and ride-height adjustments.
FAQs
Are the shocks in the Detroit Speed 030309DS Coilover Conversion Kit adjustable?
The 030309DS uses base non-adjustable aluminum-body coilover shocks with Detroit Tuned valving. The coilover system provides extensive ride-height adjustment, but the base shocks do not have external damping adjustments.
What spring rate comes with the Detroit Speed 030309DS BBC Coilover Conversion Kit?
The 030309DS includes 650 pounds/inch coilover springs with a 9.5 inch free length. The kit also includes the spring adjusting components, thrust bearings, thrust washers, and Detroit Speed spanner tool needed for coilover adjustment.
Why Buy From Beefcake Racing?
Beefcake Racing proudly offers genuine Detroit Speed suspension and chassis components backed by competitive pricing, fast shipping, and expert technical support. Whether you're upgrading a big-block Chevelle, GTO, Skylark, Cutlass, El Camino, Monte Carlo, or another compatible GM A-Body with modern coilovers or putting together a complete Pro-Touring suspension package, our knowledgeable team can help you select the right Detroit Speed components for your performance goals.
Questions about fitment, spring rates, ride height, or installation?
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

