Description
Unlock the true potential of your classic GM B-body with the QA1 Level 2 Big Wheel Kit BW02-GMB6, a comprehensive suspension solution designed for serious performance enthusiasts. This engineered kit transforms your 1971-1976 Chevelle, El Camino, or Monte Carlo from a vintage cruiser into a modern-handling machine capable of accommodating massive wheels and tires. The Level 2 kit goes beyond basic clearance by incorporating adjustable suspension components that dramatically improve cornering, stability, and overall driving dynamics.
The core of this system is the complete front and rear wheel tub set, which provides the necessary clearance for wheels up to 315mm wide, allowing you to run modern rubber for unprecedented grip. Unlike simple tub kits, QA1’s Level 2 package includes their legendary adjustable front coilover shocks and rear shocks, giving you precise control over ride height, damping, and spring rate. This means you’re not just adding space for bigger wheels—you’re fundamentally upgrading the car’s suspension architecture to handle the increased footprint. For a complete build approach, read our guide on [Planning a Pro-Touring Suspension Build for GM A & B-Body Cars].
As part of QA1’s proven product ecosystem, this kit is engineered to work seamlessly with other performance components. Whether you’re building a pro-touring champion, a modern restomod, or a street-friendly performance car, the BW02-GMB6 provides the foundation for transformative performance gains. It represents not just an aesthetic upgrade, but a complete re-engineering of your classic’s handling capabilities. Learn about the system’s design in our article [The Engineering Behind QA1’s Big Wheel Kits and Suspension Systems].
Technical Specifications
| Specification | Details |
|---|---|
| Kit Part Number | BW02-GMB6 |
| Vehicle Applications | 1971-1976 GM B-body (Chevelle, El Camino, Monte Carlo) |
| Front Wheel Capacity | Up to 18″x11″ wheels |
| Rear Wheel Capacity | Up to 20″x12″ wheels |
| Tire Width Capacity | Up to 315mm |
| Included Components | Front & rear wheel tubs, front adjustable coilovers, rear adjustable shocks |
| Front Suspension | QA1 adjustable coilover conversion |
| Rear Suspension | QA1 adjustable shocks |
| Material | High-strength steel tubs |
| Finish | Black powder coat |
Comparison Table: QA1 Level 2 vs. Alternative Suspension Kits
| Feature | QA1 Level 2 Big Wheel Kit | Basic Wheel Tub Kit | Competitor Full Suspension Kit |
|---|---|---|---|
| Wheel/Tire Capacity | Up to 315mm | Up to 295mm | Up to 305mm |
| Suspension Components | Adjustable Coilovers & Shocks | None Included | Static Lowering Springs |
| Ride Adjustability | Fully Adjustable Height & Damping | Fixed Height | Fixed Height |
| Handling Improvement | Significant | Minimal | Moderate |
| Installation Complexity | Advanced | Moderate | Advanced |
| Overall Value | Excellent (Complete Solution) | Good (Space Only) | Good |
Frequently Asked Questions (FAQs)
Q1: What exactly is included in the “Level 2” kit?
The QA1 Level 2 Big Wheel Kit (BW02-GMB6) includes:
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Full front and rear wheel tubs for maximum clearance
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Front adjustable coilover shock conversion
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Rear adjustable shocks
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All necessary hardware for installation
This creates a complete system for both fitment and performance.
Q2: Will this kit work with my stock suspension?
The Level 2 kit is designed to replace your stock front springs and shocks with the included coilovers. While the rear tubs will work with stock rear suspension, the full benefit comes from using the included adjustable rear shocks. For a less invasive approach that retains more stock components, consider the [QA1 Level 1 Big Wheel Kit].
Q3: How much wider of a tire can I run with this kit?
This kit enables you to run tires up to 315mm wide (approximately 12.5 inches), a significant increase over stock. The exact final size will depend on your wheel width and backspacing. Always test fit your specific wheel and tire combination before final assembly.
Q4: Is professional installation required?
While experienced DIYers with fabrication skills can install this kit, professional installation is strongly recommended. The installation involves cutting factory sheet metal, welding new tubs in place, and modifying the suspension system—all critical to vehicle safety and performance.
Q5: What other components will I need to complete the transformation?
To maximize the kit’s potential, consider adding:
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A matching set of modern performance wheels with correct backspacing
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High-performance tires
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Upgraded front control arms like the [QA1 Tubular Control Arms]
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A performance steering system
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Upgraded brakes to handle the increased grip
Pros and Cons
| Pros | Cons |
|---|---|
| Massive Wheel & Tire Clearance for modern rubber | Professional Installation Recommended (welding required) |
| Significant Handling Improvement with adjustable suspension | High Initial Investment |
| Complete Package Solution – no guessing what parts work together | Irreversible Modification to factory body structure |
| Ride Height & Damping Adjustability for perfect setup | Requires Wheel & Tire Investment to realize benefits |
| Proven QA1 Quality and performance heritage | Not a “Bolt-On” Solution – significant modification required |
| Transforms Vehicle Dynamics from vintage to modern | May Affect Vehicle Value for numbers-matching purists |
Conclusion & Ideal Use Cases
The QA1 Level 2 Big Wheel Kit BW02-GMB6 represents the ultimate suspension and clearance solution for serious GM B-body enthusiasts building a modern performance vehicle. While requiring significant investment and irreversible modifications, the result is a transformational improvement in both aesthetics and handling that bridges the gap between classic styling and modern performance.
This kit is ideally suited for:
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Pro-Touring Builds: Creating a corner-carving classic with modern grip
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Restomod Projects: Combining vintage style with contemporary performance
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Track-Day Cars: Building a competitive classic for HPDE and time attack
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Show Cars with Go: Vehicles where massive wheels and performance both matter
For owners seeking less invasive modifications, the [QA1 Level 1 Big Wheel Kit] provides increased clearance without the full suspension upgrade. However, for the enthusiast committed to building the ultimate handling B-body, the Level 2 kit delivers a complete, engineered solution that works in harmony to transform your classic’s capabilities.
Ready to transform your B-body? Contact our performance specialists today for technical support, package deals with wheels and tires, and recommendations for certified installers in your area.
