Detroit Speed Coilover Front Conversion Kit - Single Adjustable Shocks - BBC (1964-1967 GM A-Body) - 030307-SDS
Bring modern coilover performance and driver-adjustable suspension tuning to your big-block classic with the Detroit Speed 030307-SDS Front Coilover Conversion Kit. Engineered specifically for 1964-1967 GM A-Body applications with Big Block Chevrolet engines, this direct bolt-in package replaces the conventional front spring and shock arrangement with an integrated coilover system. Detroit Speed combines extensive ride-height adjustability, application-specific Detroit Tuned valving, and adjustable rebound damping to give your classic improved suspension control without sacrificing street ride quality.
The 030307-SDS features single adjustable aluminum-body coilover shocks with Detroit Tuned valving. Building on the performance of Detroit Speed's base shock, the single adjustable version adds external rebound adjustment with the simple turn of a knob. This allows you to fine-tune shock response to suit vehicle setup, road conditions, and driving style while retaining the street-friendly ride quality engineered into the Detroit Tuned valving.
Detroit Speed pairs the shocks with 650 pounds/inch coilover springs with a 9.5 inch free length for the Big Block Chevrolet application. The threaded coilover design provides extensive ride-height adjustability, allowing you to dial in front stance while maintaining a matched shock and spring combination. Included thrust bearings and thrust washers help make spring adjustments easier, and Detroit Speed supplies a dedicated spanner tool for convenient coilover adjustment.
The 030307-SDS is engineered as a direct bolt-in front coilover conversion and includes the components required for installation. The package includes two Detroit Tuned coilover shocks, two 650 pounds/inch coilover springs, spring adjusting nuts, polyurethane upper and lower shock bushings, aluminum spacers, thrust bearings, thrust washers, mounting hardware, and the Detroit Speed spanner tool. Rather than piecing together shocks, springs, and mounting components from different sources, you get a complete system designed to work together on the 1964-1967 GM A-Body platform.
For a big-block Chevelle, GTO, Skylark, Cutlass, or other compatible A-Body that needs more tuning capability than a fixed-valving shock without moving to a double adjustable setup, the Detroit Speed 030307-SDS hits an excellent middle ground. Its BBC-specific spring rate, extensive ride-height adjustment, Detroit Tuned valving, and easy rebound adjustment make it a strong choice for street performance, restomod, and Pro-Touring builds.
Quick Specs
- Part Number: 030307-SDS
- Manufacturer: Detroit Speed
- Product Type: Front Coilover Conversion Kit
- Application: 1964-1967 GM A-Body
- Engine Application: Big Block Chevrolet
- Position: Front
- Shock Type: Single Adjustable Coilover
- Shock Adjustment: Rebound
- Rebound Adjustment: External Knob
- Shock Body: Aluminum
- Shock Valving: Detroit Tuned
- Designed to Provide Excellent Street Ride Quality
- Spring Rate: 650 Pounds/Inch
- Spring Free Length: 9.5 Inches
- Extensive Ride-Height Adjustability
- Installation Type: Direct Bolt-In
- Detroit Tuned Coilover Shocks: 2
- Coilover Springs: 2
- Coilover Spring Adjusting Nuts: 2
- 5/8 Inch Flat Washers: 4
- Polyurethane Upper Shock Bushings: 2
- Polyurethane Lower Shock Bushings: 2
- Aluminum Spacers: 2
- 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: 5
Features
- Direct bolt-in front coilover conversion engineered for 1964-1967 GM A-Body applications with Big Block Chevrolet engines
- Replaces the conventional front spring and shock arrangement with modern coilover suspension technology
- Single adjustable shocks add driver-controlled rebound tuning to Detroit Speed's base shock features
- External adjustment knob makes rebound changes quick and straightforward
- Allows shock response to be fine-tuned for vehicle setup, road conditions, and driving style
- Detroit Tuned valving combines performance-focused suspension control with excellent street ride quality
- Aluminum-body coilover shock construction
- 650 pounds/inch spring rate matched to the BBC application
- 9.5 inch spring free length
- Threaded coilover spring adjustment provides extensive ride-height tuning
- Allows front ride height and vehicle stance to be fine-tuned while retaining a matched shock and spring combination
- Included thrust bearings and thrust washers help make spring and ride-height adjustments easier
- Polyurethane upper and lower shock bushings are included
- Aluminum spacers and required mounting hardware are supplied with the kit
- Detroit Speed spanner tool is included for convenient coilover adjustment
- Complete package eliminates the need to separately source shocks, springs, and installation hardware
- Excellent choice for performance street, restomod, and Pro-Touring GM A-Body builds
Fitment
- 1965 Buick Gran Sport
- 1966 Buick Gran Sport
- 1967 Buick Gran Sport
- 1964 Buick Skylark
- 1965 Buick Skylark
- 1966 Buick Skylark
- 1967 Buick Skylark
- 1964 Buick Special
- 1965 Buick Special
- 1966 Buick Special
- 1967 Buick Special
- 1964 Buick Sportwagon
- 1965 Buick Sportwagon
- 1966 Buick Sportwagon
- 1967 Buick Sportwagon
- 1964 Chevrolet Chevelle
- 1965 Chevrolet Chevelle
- 1966 Chevrolet Chevelle
- 1967 Chevrolet Chevelle
- 1964 Chevrolet El Camino
- 1965 Chevrolet El Camino
- 1966 Chevrolet El Camino
- 1967 Chevrolet El Camino
- 1964 Chevrolet Malibu
- 1965 Chevrolet Malibu
- 1966 Chevrolet Malibu
- 1967 Chevrolet Malibu
- 1964 Oldsmobile 442
- 1965 Oldsmobile 442
- 1966 Oldsmobile 442
- 1967 Oldsmobile 442
- 1964 Oldsmobile Cutlass
- 1965 Oldsmobile Cutlass
- 1966 Oldsmobile Cutlass
- 1967 Oldsmobile Cutlass
- 1967 Oldsmobile Cutlass Supreme
- 1964 Oldsmobile F85
- 1965 Oldsmobile F85
- 1966 Oldsmobile F85
- 1967 Oldsmobile F85
- 1964 Oldsmobile Vista Cruiser
- 1965 Oldsmobile Vista Cruiser
- 1966 Oldsmobile Vista Cruiser
- 1967 Oldsmobile Vista Cruiser
- 1964 Pontiac GTO
- 1965 Pontiac GTO
- 1966 Pontiac GTO
- 1967 Pontiac GTO
- 1964 Pontiac LeMans
- 1965 Pontiac LeMans
- 1966 Pontiac LeMans
- 1967 Pontiac LeMans
Fitment Note: The 030307-SDS is the single adjustable Big Block Chevrolet version of Detroit Speed's 1964-1967 GM A-Body Front Coilover Conversion Kit. 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
What can be adjusted on the Detroit Speed 030307-SDS single adjustable shocks?
The single adjustable shocks add rebound adjustment to Detroit Speed's base shock features. Rebound can be changed with the external adjustment knob, allowing you to fine-tune suspension response while retaining Detroit Tuned valving and excellent street ride quality.
What spring rate comes with the Detroit Speed 030307-SDS BBC Coilover Conversion Kit?
The 030307-SDS includes two 650 pounds/inch coilover springs with a 9.5 inch free length. The kit also provides extensive ride-height adjustment and includes the spring adjusting hardware, thrust bearings, thrust washers, and Detroit Speed spanner tool.
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, 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, shock adjustment, or installation?
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

