Product Summary
64-67 Chevy Chevelle, Tubular Control Arm Style
- Heavy duty tubular design and black powder coated finish is the perfect addition to any resto-mod build
- New greaseable ball joints come pre-installed and are OEM replacement designs making service parts readily available
- No welding cutting or modifications to install
- Springs are made from cold wound, heat treaded chrome silicone steel
- The threaded aluminum body shocks allows easy ride height adjustment
Details
Control ArmsIf you want a superior set of tubular control arms for your GM A-Body car, including 1964-1972 Chevelle, we’ve got you covered. These control arms are specifically designed to plant the tires to the ground with improved geometry for modern tire design and increased adjustability for street/track performance. A-arm set comes complete with bushings, ball joints, bump stops, and are powder coated black.
- Kit includes both upper and lower control arms
- All new components
- Heavy duty tubular design with Delrin bushings
- Additional caster built into upper arms
- Improved geometry to firmly plant modern radial tires
- Durable black powder-coated finish
- Maintains stock ride height
- Upper Control Arm Shaft Bolts/Nuts
- Lower Frame Bolt Set
Sway BarThis front sway bar kit is designed as a performance replacement upgrade for your classic GM A-body muscle car. Features a 1-1/4″ diameter solid steel bar and comes with all hardware needed for a successful installation. If your GM A-body came with an anti-sway bar from the factory, chances are this kit will be a direct replacement. If it did not, a small amount of drilling will be required for installation of the sway bar kit.
- Achieve flatter cornering
- Complements rear sway bar to reduce understeer and gain more neutral handing
- Adds to cornering stability at speed
- Solid steel 1-1/4″ diameter bar
- Includes polyurethane bushings for increased responsiveness
- Black powder coated finish
- Corrosion resistant zinc plated hardware included
Shock and SpringsThese silver powder coated springs fit perfectly with QA1’s Pro Coil Shock Systems. Made with the highest quality materials, QA1 springs are strong, consistent and have a long life. Features 3.5″ upper i/d, 2.5″ lower i/d, and a 10″ length.
Chrome Silicon Steel (CrS)
Cold Wound – Heat Treated – Shot Peened
All QA1 springs go through intensive manufacturing processes to ensure consistency, accuracy and durability.
Protective Coated
QA1’s GM Pro Coil springs are silver powder coated for excellent longevity.
High Travel Options
Springs with HT in the part number are high travel springs. The high travel springs have fewer coils and a smaller wire diameter. As a result, they are lighter and have increased travel due to the larger distance between the coils. These lighter springs reduce unsprung weight and react faster, optimizing suspension performance.
Lengths and Rates Marked
All QA1 springs are clearly marked with the free length of the spring and spring rate for quick and easy identification.
LIFETIME GUARANTEE
All QA1 springs are lifetime guaranteed to remain within 2% of the original free height and rate under normal operating conditions.
Coilover Plates
Speedway tubular coilover plates allow you to reinforce the lower control arm when running coilovers.
- 5-1/2 inch outside diameter
- 1/4″ thick
- 3/8″ bolt holes, spaced 2-11/16″ center to center
- 2″ x 2″ square center hole
Kit Includes
- (1) 1964-72 GM A Body Chevelle Tubular Upper and Lower Control Arms
- (1) Replacement Upper Control Arm Shaft Bolts/Nuts, 1964-74 GM
- (1) Classic Headquarters W-547A Lower Frame Bolt Set, Nova/Camaro
- (4) 1/2″-13 Zinc Plated Steel Top Lock Nut
- (6) A-Arm Control Arm 1/32 Inch Alignment Shim, 9/16 Slot Size, Zinc
- (6) A-Arm Control Arm 1/8 Inch Alignment Shim, Zinc
- (1) Front Sway Bar Kit, 1.25 Inch, 1964-77 GM A-Body
- (2) QA1 GMP Coil-Over Spring
- (2) QA1 Adjustable Pro-Coil Shock
- (1) Tubular Lower Control Arm Coilover Reinforcement Plate
KEY SPECS |
|
|---|---|
| MFG. Part # | 9100297 |
| Brand | Speedway Motors |
| Control Arm Style | Tubular |
| Spring Type | Coilover |
| Finish | Powder Coated |
| Shock Adjustability | Single Adjustable |
| Hardware Included | Yes |
GENERAL |
|
| Spring Finish | Powder Coated |
| Sold in Quantity | Kit |
Prepping Control Arms for Coil-Overs – 1967 Chevelle
As promised, this article dovetails off the end of the control arm article. Since these two projects were done concurrently, now seems like a good time to cover the process of prepping these arms for use with coil-overs.
Normally the front shock absorber mounts from below the control arm with bolts that tread into a speed nut or welded nut (in this case) on the lower control arm. When you change that shock absorbers work load to also include supporting the weight of the vehicle, which requires that you place that load on top of the control arm in order for the load to transfer to the arm via direct contact rather than through the tensile load on the bolts. Below, I’ll detail the steps that I took to ensure this conversion would perform and last.
I drilled out the old nuts as best as I could with a step drill, ensuring that I didn’t open up the holes in the control arm any larger than the newly required 3/8”. Then I was able to break away most of the remaining nuts with lineman’s pliers to leave just the welds to be ground. I ground and smoothed away the welds with a cutoff wheel on my angle grinder.
Since the new hardware supplied with the QA1 coilovers upgraded these fasteners to 3/8” fine thread, I drilled those holes to the new dimension after grinding was complete.
This led me to a new concern. The way that the “top hat” for the lower shock mount is designed leaves a large, unsupported area directly under where the cross-bar of the coil-over will rest. Given the punishment that a big block, plus air conditioning, plus aggressive driving will give, I decided to try and come up with a way to beef this area up.
What I came up with is this. Now sold under part #910-3610, this reinforcement plate sandwiches between the coil-over lower mount and the mounting pad on the arm. This plate takes the load and spreads it across the entire top-hat area and being over-sized also provides a block-off plate for the now unused coil spring pocket. Which may otherwise collect debris.
With prototype parts in hand I assembled the coil-overs per the instructions provided by QA1. I opted to add the Torrington bearing kit as well to aid in future ride height adjustments.
During installation I noted that the increased thickness of the plates caused the bolts not to protrude far enough into the nylock nuts to actually engage the locking ring. I chose to source new bolts that are .25” longer to ensure good engagement.
Something else that I’ve found essential to happy life with coil-overs, is the liberal application of anti-seize to the aluminum threads on the body of the shock. This will pay dividends down the road when you want to make adjustments to your setup.
All in all, this was a very productive upgrade and went a long way toward my goal of getting the car back down on the ground and on four wheels again.
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