Detroit Speed Tubular Upper Control Arms (1973-1977 GM A-Body) - 030106DS
Give your 1973-1977 GM A-Body sharper, more predictable front suspension response with the Detroit Speed 030106DS Tubular Upper Control Arm Kit. Designed as a bolt-on upgrade for the factory upper control arms, this complete package improves suspension geometry by increasing camber gain, improving roll camber, and adding caster. These geometry changes help the front suspension maintain better tire positioning as it moves through its travel while delivering the more precise steering response and handling expected from a properly upgraded classic muscle car.
Detroit Speed developed these upper control arms using computer modeling and finite element analysis rather than simply recreating the factory geometry with tubular construction. CNC-machined tube ends provide precise component fit, while each control arm is TIG welded in a fixture to maintain accurate and repeatable geometry. The ball joint pockets are CNC machined from billet for increased strength, and the completed control arms receive a durable gloss black powder-coated finish.
A major advantage of the 030106DS is Detroit Speed's Caster Tuner Bushing system. CNC-machined stainless steel cross shafts incorporate aluminum Caster Tuner Bushings that allow caster to be changed by moving the upper control arm fore or aft. This provides a precise and permanent method of increasing or decreasing caster without adding alignment shims specifically for the caster adjustment. Two sets of Caster Tuner Bushings are included with the kit.
The control arms also use greaseable aluminum/Delrin bushings that provide increased stiffness compared with stock-style bushings. Reducing unwanted bushing compliance helps maintain suspension geometry under load for more consistent and precise handling. CNC-machined beveled stainless steel washers and stainless steel Nylock nuts complete the bushing assemblies.
Detroit Speed supplies the 030106DS as a comprehensive package with the upper control arms already assembled with new ball joints and ready for bolt-on installation. Detroit Speed states that installation should take less than one day, with grease being the primary installation supply that must be provided separately. A professional front-end alignment should be performed after installation to properly set the suspension and take full advantage of the revised geometry.
Quick Specs
- Part Number: 030106DS
- Manufacturer: Detroit Speed
- Product Type: Tubular Upper Control Arm Kit
- Position: Front Upper
- Application: 1973-1977 GM A-Body
- Installation Type: Bolt-On
- Designed to Improve Factory Suspension Geometry
- Increased Camber Gain
- Improved Roll Camber
- Increased Caster for Improved Ride and Handling
- Computer-Modeled Design
- Components Analyzed Using Finite Element Analysis
- Cross Shafts: CNC-Machined Stainless Steel
- Detroit Speed Caster Tuner Bushings Included
- Caster Tuner Bushing Material: Aluminum
- Caster Adjustment Moves Upper Control Arm Fore/Aft
- Two Sets of Caster Tuner Bushings Included
- Control Arm Bushings: Greaseable Aluminum/Delrin
- CNC-Machined Beveled Stainless Steel Washers
- Stainless Steel Nylock Nuts
- CNC-Machined Tube Ends
- Ball Joint Pockets: CNC Machined from Billet
- Construction: TIG Welded in a Fixture for Accurate and Repeatable Geometry
- Finish: Gloss Black Powder Coat
- New Ball Joints Included
- Control Arms Arrive Assembled and Ready to Install
- Grease Required for Installation
- Professional Alignment Recommended After Installation
- Manufacturer-Stated Installation Time: Less Than One Day
- Emission Code: 4
Features
- Engineered specifically as a bolt-on upper control arm upgrade for 1973-1977 GM A-Body applications
- Revised suspension geometry increases camber gain and improves roll camber compared with stock
- Increased caster contributes to improved ride and handling characteristics
- Computer-modeled design backed by finite element analysis of the components
- CNC-machined stainless steel cross shafts provide a precise and durable mounting foundation
- Detroit Speed Caster Tuner Bushings provide a dedicated method of adjusting caster
- Caster Tuner Bushings move the upper control arm fore or aft to increase or decrease caster
- Caster adjustment does not require adding alignment shims specifically to change caster
- Two sets of aluminum Caster Tuner Bushings are included
- Greaseable aluminum/Delrin bushings provide increased stiffness compared with stock-style bushings
- Reduced bushing compliance helps maintain more consistent suspension geometry under load
- CNC-machined beveled stainless steel washers and stainless steel Nylock nuts provide durable bushing hardware
- CNC-machined tube ends provide precise component fit
- CNC-machined billet ball joint pockets provide increased strength
- TIG welded in a fixture for accuracy and repeatability of control arm geometry
- Gloss black powder-coated finish provides durability and a clean performance appearance
- New ball joints are installed in the control arms for a comprehensive bolt-on package
Fitment
- 1973 Buick Century
- 1974 Buick Century
- 1975 Buick Century
- 1976 Buick Century
- 1977 Buick Century
- 1973 Chevrolet Chevelle
- 1973 Chevrolet El Camino
- 1974 Chevrolet El Camino
- 1975 Chevrolet El Camino
- 1976 Chevrolet El Camino
- 1977 Chevrolet El Camino
- 1973 Chevrolet Monte Carlo
- 1974 Chevrolet Monte Carlo
- 1975 Chevrolet Monte Carlo
- 1976 Chevrolet Monte Carlo
- 1977 Chevrolet Monte Carlo
- 1973 GMC Sprint
- 1974 GMC Sprint
- 1975 GMC Sprint
- 1976 GMC Sprint
- 1977 GMC Sprint
- 1973 Oldsmobile Cutlass
- 1974 Oldsmobile Cutlass
- 1975 Oldsmobile Cutlass
- 1976 Oldsmobile Cutlass
- 1977 Oldsmobile Cutlass
- 1973 Oldsmobile Cutlass Supreme
- 1974 Oldsmobile Cutlass Supreme
- 1975 Oldsmobile Cutlass Supreme
- 1976 Oldsmobile Cutlass Supreme
- 1977 Oldsmobile Cutlass Supreme
- 1973 Pontiac Grand Am
- 1974 Pontiac Grand Am
- 1975 Pontiac Grand Am
- 1973 Pontiac Grand Prix
- 1974 Pontiac Grand Prix
- 1975 Pontiac Grand Prix
- 1976 Pontiac Grand Prix
- 1977 Pontiac Grand Prix
- 1973 Pontiac LeMans
- 1974 Pontiac LeMans
- 1975 Pontiac LeMans
- 1976 Pontiac LeMans
- 1977 Pontiac LeMans
FAQs
How do the Detroit Speed 030106DS Upper Control Arms improve handling?
Detroit Speed revised the suspension geometry to increase camber gain, improve roll camber, and add caster compared with the stock configuration. The stiffer greaseable aluminum/Delrin bushings also reduce unwanted compliance, helping the front suspension maintain more consistent geometry and respond more precisely to steering and road inputs.
How do the Detroit Speed Caster Tuner Bushings work?
The aluminum Caster Tuner Bushings reposition the upper control arm fore or aft to increase or decrease caster without requiring additional alignment shims specifically for the caster adjustment. Two sets are included with the 030106DS kit. A professional front-end alignment should be performed after installation.
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 sharpening the handling of a classic GM A-Body, upgrading an aging factory suspension, 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, alignment, or installation?
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
