A&A Superchargers: Corvette Performance Systems
A&A Superchargers represents premier engineering in centrifugal supercharger systems designed specifically for Chevrolet Corvette platforms (including C5, C6, and C7 generations). Founded by performance enthusiast Andy Green in California, A&A Corvette revolutionized forced induction for LS and LT V8 engines by developing proprietary billet mounting brackets, ultra-efficient air-to-air intercoolers, and dedicated multi-rib drive pulley systems. Delivering dramatic 150 to 350+ rear-wheel horsepower increases while maintaining OEM daily street manners, A&A systems are revered across the modern Corvette aftermarket.
Engineering Anatomy: Vortech Head Units and Billet Brackets
At the mechanical core of every A&A Supercharger package is a high-efficiency Vortech centrifugal compressor head unit (typically the V-3 Si-Trim for mild street builds or V-2 Ti-Trim and YSi-Trim for high-horsepower competition). Unlike positive-displacement Roots or twin-screw blowers that sit atop the engine intake manifold, centrifugal superchargers mount on the front accessory drive. This preserves the low factory Corvette hood clearance without requiring unsightly fiberglass hood scoops.
A&A earned legendary status due to their patented CNC-machined 6061-T6 billet aluminum mounting brackets. Because supercharger drive belts experience tremendous rotational torque and lateral deflection under rapid engine acceleration, flimsy stamped steel brackets flex and throw belts. A&A's thick dual-plate bracket design maintains rigid pulley alignment, incorporating spring-loaded manual or automatic tensioners that deliver rock-solid belt grip across high-RPM pulls.
Review this comparison of popular A&A supercharger head unit trims, airflow ratings, and typical rear-wheel horsepower outputs.
| Supercharger Head Unit | Max Airflow Capacity | Max Impeller RPM | Typical RWHP Output Potential |
|---|---|---|---|
| Vortech V-3 Si-Trim | 1,150 CFM | 52,000 RPM | 550 to 650 RWHP (Ideal stock bottom end street build) |
| Vortech V-2 Ti-Trim | 1,400 CFM | 55,000 RPM | 650 to 800 RWHP (Aggressive heads/cam street monster) |
| Vortech V-1 YSi-Trim | 1,600 CFM | 65,000 RPM | 800 to 1,000+ RWHP (Max-effort forged racing engine) |
| Vortech V-7 YSi-B Billet | 1,800 CFM | 70,000 RPM | 1,100+ RWHP (Pro drag racing and half-mile competition) |
| Paxton Novi 1500 / 2200 | 1,200 to 1,450 CFM | 55,000 RPM | 600 to 850 RWHP (Alternative heavy-duty centrifugal option) |
Self-contained V-3 head units feature internal oiling reservoirs that eliminate the need to drill oil return fittings into the engine oil pan.
Intercooling, Fuel System Upgrades, and Dyno Calibration
Compressing ambient air inevitably generates heat. A&A systems utilize a custom large-core bar-and-plate aluminum front-mount intercooler designed specifically to fit into the Corvette's bottom-breather radiator shroud cavity. By routing pressurized boost through high-density internal cooling fins, intake air temperatures (IATs) drop significantly, allowing engine tuners to run optimal spark ignition timing without engine-destroying spark knock (detonation).
Supplying adequate fuel is essential to support boosted horsepower. Baseline A&A kits include high-flow fuel injectors (such as 60 lb/hr or 80 lb/hr injectors) and secondary inline booster fuel pumps or complete drop-in fuel pump modules. After mechanical bolt-on installation, a qualified dyno tuner calibrates the engine control unit (ECU) on a chassis dynamometer, carefully mapping air-fuel ratios (targeting 11.5:1 under boost) and throttle tip-in tables.
The following table outlines standard performance metrics, boost levels, and supporting fuel requirements for Corvette generations.
| Corvette Generation / Engine | Typical Boost Level | Supporting Fuel Upgrade | Average Baseline to Supercharged RWHP |
|---|---|---|---|
| C5 Corvette (LS1 / LS6 5.7L) | 6 to 8 PSI | 60 lb injectors + Racetronix 255LPH fuel pump | 300 RWHP base to 475–550 RWHP boosted |
| C6 Corvette (LS2 / LS3 6.0/6.2L) | 7 to 9 PSI | 65 lb injectors + Kenne Bell Boost-A-Pump | 370 RWHP base to 580–650 RWHP boosted |
| C6 Z06 (LS7 7.0L 427ci) | 5 to 6 PSI (mild) | 80 lb injectors + auxiliary secondary pump | 450 RWHP base to 650–700 RWHP boosted |
| C7 Corvette (LT1 6.2L Gen V) | 6 to 8 PSI | LT4 high-pressure pump & LT4 fuel injectors | 410 RWHP base to 600–680 RWHP boosted |
| C7 Z06 (LT4 6.2L Supercharged) | Centrifugal swap | Low-side auxiliary fuel kit + methanol injection | 570 RWHP base to 800+ RWHP boosted |
Maintaining conservative boost pressures between 6 and 8 PSI preserves the integrity of factory hypereutectic pistons on pump gas.
How to Install an A&A Supercharger Kit in 5 Steps
Follow this high-performance automotive installation overview to mount, plumb, and tune an A&A Corvette supercharger system.
Pin the Crankshaft Damper Pulley
Remove the steering rack and pin the harmonic balancer to the crankshaft snout using a hardened steel dowel pin kit to prevent pulley slippage.
Mount Billet Supercharger Bracket and Head Unit
Bolt the CNC billet aluminum bracket assembly to the cylinder head mounting bosses, securing the Vortech compressor unit.
Install High-Flow Intercooler and Charge Piping
Position the front-mount air-to-air intercooler into the front radiator mouth, routing aluminum mandrel-bent charge pipes with silicone couplers.
Upgrade Fuel Injectors and Fuel Pump Voltage
Swap factory fuel injectors for matched high-impedance injectors and wire an electronic fuel pump voltage booster into the tank harness.
Perform Custom Dyno Calibration and Road Test
Strap the vehicle onto a chassis dyno to flash a custom HP Tuners calibration, verifying air-fuel ratios and knock sensor feedback across all RPMs.
Frequently Asked Questions (8 Questions Answered)
Q1: What is an A&A Supercharger?
A&A Superchargers is an aftermarket performance company specializing in centrifugal supercharger systems engineered specifically for Chevrolet Corvettes.
Q2: How much horsepower does an A&A Supercharger add to a Corvette?
A standard A&A supercharger kit adds between 150 and 220 rear-wheel horsepower on stock engines, with built motors gaining 400+ horsepower.
Q3: Do I need a new hood to install an A&A supercharger on my Corvette?
No, because the centrifugal compressor mounts on the front accessory drive rather than atop the engine, the entire kit fits beneath the factory hood.
Q4: Is an A&A supercharger Corvette reliable for daily driving?
Yes, centrifugal superchargers build boost progressively with engine RPM, driving like a stock car during normal commuting while delivering massive power at full throttle.
Q5: What is the difference between a self-contained and engine-oiled supercharger?
Self-contained (Vortech V-3) superchargers have internal lubricating oil and require zero oil lines, while engine-oiled units tap directly into the engine oil pan.
Q6: Why is pinning the crankshaft necessary during supercharger installation?
Factory Corvette harmonic balancers are press-fit without keyways; pinning the pulley with a steel dowel prevents the belt from spinning the pulley on the crankshaft.
Q7: Can a stock Corvette clutch handle an A&A supercharger?
Stock C5 and C6 clutches will slip under boosted torque; upgrading to an LS7 clutch or twin-disc ceramic clutch is recommended.
Q8: What fuel octane is required for an A&A supercharged Corvette?
Supercharged engines require a minimum of 91 or 93 octane premium pump gasoline to prevent destructive pre-ignition and spark knock.
Final Thoughts & Key Takeaways
In conclusion, understanding a&a superchargers: corvette performance systems provides essential clarity, practical strategies, and actionable advice. By incorporating these foundational insights, adhering to verified safety guidelines, and following structured best practices, you ensure reliable, long-term outcomes while preventing common mistakes. Stay informed, consult certified professionals when needed, and maintain consistent quality care.