DSE Rear Coilover Conversion Kit - Factory 2-3/4 Inch Axle Tubes (042420DS) - 1978-1988 GM G-Body
Bring modern coilover suspension technology to your 1978-1988 GM G-Body with the Detroit Speed Rear Coilover Conversion Kit. Part number 042420DS is engineered for G-Body applications equipped with a factory GM rear axle featuring 2-3/4 inch axle tubes. The complete system replaces the original separate rear coil spring and shock arrangement with an integrated Detroit Tuned coilover package, giving your G-Body extensive ride-height adjustability along with a suspension setup engineered to improve handling and ride quality.
Detroit Speed equips the 042420DS package with base non-adjustable coilover shocks featuring Detroit Tuned valving and pairs them with 175 pounds per inch springs measuring 11 inches in free length. The complete bolt-on conversion includes the shocks, springs, application-specific upper and lower coilover mounting components, Torrington bearing set, hardware, and installation instructions. For a street-driven, pro-touring, autocross, or handling-focused G-Body, this kit provides a purpose-built path from the original spring-and-shock arrangement to a modern adjustable-height coilover system.
Specifications
- Manufacturer: Detroit Speed
- Part Number: 042420DS
- Product Type: Rear Coilover Conversion Kit
- Position: Rear
- Application: 1978-1988 GM G-Body
- Rear Axle: Factory GM axle
- Axle Tube Diameter: 2-3/4 inches
- Shock Type: Non-adjustable
- Shock Valving: Detroit Tuned
- Spring Rate: 175 pounds per inch
- Spring Free Length: 11 inches
- Ride Height: Adjustable
- Installation Type: Complete bolt-on conversion
- Coilover Shocks Included: 2
- Coilover Springs Included: 2
- Upper Coilover Shock Mounting Plates: Right- and left-hand plates included
- Lower Coilover Shock Mounting Brackets: Right- and left-hand brackets included
- Torrington Bearing Set: Included
- Hardware Kit: Included
- Wagon Applications: Excluded
Features
- Converts the factory separate rear coil spring and shock arrangement to an integrated coilover suspension system
- Engineered for 1978-1988 GM G-Body applications with a factory GM rear axle and 2-3/4 inch axle tubes
- Detroit Tuned non-adjustable shocks provide an engineered balance of handling performance and ride quality
- Extensive coilover ride-height adjustment lets you fine-tune vehicle stance and rear suspension setup
- 175 pounds per inch coilover spring rate
- 11 inch coilover spring free length
- Complete bolt-on package eliminates the need to piece together a universal coilover conversion
- Application-specific right- and left-hand upper shock mounting plates provide dedicated upper coilover mounting points
- Right- and left-hand lower mounting brackets properly locate the coilovers at the rear axle
- Torrington bearing set is included with the conversion kit
- Required installation hardware is supplied
- Provides modern coilover spring and shock technology for classic GM G-Body suspension
- Well suited for street-performance, pro-touring, autocross, and other handling-focused G-Body builds
- Complete system includes two coilover shocks, two coilover springs, upper mounting plates, lower mounting brackets, Torrington bearing set, hardware kit, and installation instructions
Fitment
- 1978 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1979 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1980 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1981 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1982 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1983 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1984 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1985 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1986 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1987 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
- 1988 GM G-Body with factory 2-3/4 inch axle tubes, excluding wagon
Fitment Note: Detroit Speed 042420DS is specifically designed for a factory GM rear axle with 2-3/4 inch axle tubes. Wagon applications are excluded. Verify rear axle type and axle tube diameter before ordering, as Detroit Speed offers a separate G-Body coilover conversion for other rear axle configurations.
FAQs
What rear axle does Detroit Speed 042420DS fit?
Part number 042420DS is designed for 1978-1988 GM G-Body applications equipped with a factory GM rear axle using 2-3/4 inch axle tubes. Confirm the rear axle and axle tube diameter before ordering.
Are the shocks in Detroit Speed 042420DS adjustable?
The included shocks are non-adjustable and feature Detroit Speed's Detroit Tuned valving. The coilover system itself provides extensive ride-height adjustment, allowing you to fine-tune vehicle stance while retaining Detroit Speed's engineered shock calibration.
Is Detroit Speed 042420DS a bolt-on conversion?
Yes. Detroit Speed describes 042420DS as a complete bolt-on rear coilover conversion. The kit includes the coilover shocks and springs, upper and lower mounting components, Torrington bearing set, hardware, and installation instructions required for the conversion.
Why Buy Detroit Speed from Beefcake Racing?
Beefcake Racing is your source for Detroit Speed suspension components for classic muscle cars, street-performance builds, pro-touring projects, autocross cars, and track-focused combinations. Rear axle configuration matters when choosing a G-Body coilover conversion, and Beefcake Racing can help you get the correct components for your build. Questions about Detroit Speed 042420DS or your GM G-Body suspension setup? Email sales@beefcakeracing.com or call 1-855-827-7223.
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