Whipple Supercharger Kit Gen 6 3.0L (2020–2024 GM 2500HD 6.6L Truck Global A)
Overview
The Whipple Gen 6 3.0L Supercharger Kit for 2020–2024 GM 2500HD and 3500HD trucks equipped with the 6.6L L8T engine is the most powerful emissions-legal supercharger system available for GM’s heavy-duty gasoline platform. Engineered for serious towing, hauling, and high-load performance, this complete bolt-on system delivers massive torque, instant throttle response, and factory-level reliability.
Built around Whipple’s award-winning Gen 6 3.0L twin-screw supercharger, this system is capable of producing up to 685 horsepower and 695 lb-ft of torque with just 7 psi of boost on 93-octane fuel. Whether your truck is working daily or built for performance, this system delivers consistent, repeatable power under extreme conditions.
Gen 6 Twin-Screw Power Advantage
At the heart of the system is Whipple’s Gen 6 3.0L twin-screw supercharger, designed specifically for GM LT direct-injected engines. Featuring advanced rotor geometry and industry-leading efficiency, this supercharger delivers instant boost with minimal parasitic loss—consuming less than 1 horsepower during steady-state cruising.
An integrated intercooled bypass system enhances acceleration while maintaining excellent drivability and fuel efficiency during light-load operation.
Performance Highlights
- Up to 685 HP and 695 lb-ft of torque on 93 octane*
- Whipple Gen 6 3.0L twin-screw supercharger
- Instant torque for towing, hauling, and performance use
- Designed for stock or modified 6.6L L8T engines
- 50-state legal and CARB certified
Heavy-Duty Cooling System
This system features a massive billet 6061-T6 air-to-water intercooler with ultra-dense fins for superior heat rejection under sustained load. Paired with a large dual-pass heat exchanger and a high-flow intercooler pump, the cooling system is designed to maintain stable intake temperatures during towing, repeated pulls, or high ambient temperatures.
Rapid recovery times and consistent temperatures ensure dependable performance in demanding real-world conditions.
OEM-Quality Integration
The Whipple kit includes a high-flow aluminum intake manifold, high-capacity water system, billet idler plate, and an adjustable idler system for precise belt control. Plug-and-play wiring and OEM-style fittings ensure a clean, factory-quality installation.
Available in a standard textured black finish or a wide range of custom colors, this system delivers both performance and under-hood appeal.
PCM Requirements & Compatibility
2020–2024 model years require an E93 PCM upgrade service. HP Tuners supports Global A and Global B E93 PCMs.
- E93 Global A Service Tag: #12692986
- E93 Global B Service Tag: #12731976
Quick Specs
- Part Number: WK-1225-30
- Engine: GM 6.6L L8T
- Supercharger Type: Whipple Gen 6 twin-screw
- Displacement: 3.0 liters
- Boost Level: Approximately 7 psi
- Output: Up to 685 HP / 695 lb-ft torque*
- Cooling: Air-to-water intercooler, dual-pass heat exchanger, high-flow pump
- PCM Compatibility: Global A & Global B (E93)
- Emissions: CARB certified, EO D-231-106
FAQs
Is this supercharger kit street legal?
Yes. This system is CARB certified and legal for use in all 50 states when installed as supplied.
Can this kit be used on stock and modified engines?
Yes. The system is designed to work with both stock and extensively modified 6.6L L8T engines.
Fitment
- 2020 Chevrolet Silverado 2500HD 6.6L L8T
- 2021 Chevrolet Silverado 2500HD 6.6L L8T
- 2022 Chevrolet Silverado 2500HD 6.6L L8T
- 2023 Chevrolet Silverado 2500HD 6.6L L8T
- 2024 Chevrolet Silverado 2500HD 6.6L L8T
- 2020 Chevrolet Silverado 3500HD 6.6L L8T
- 2021 Chevrolet Silverado 3500HD 6.6L L8T
- 2022 Chevrolet Silverado 3500HD 6.6L L8T
- 2023 Chevrolet Silverado 3500HD 6.6L L8T
- 2024 Chevrolet Silverado 3500HD 6.6L L8T
- 2020 GMC Sierra 2500HD 6.6L L8T
- 2021 GMC Sierra 2500HD 6.6L L8T
- 2022 GMC Sierra 2500HD 6.6L L8T
- 2023 GMC Sierra 2500HD 6.6L L8T
- 2024 GMC Sierra 2500HD 6.6L L8T
- 2020 GMC Sierra 3500HD 6.6L L8T
- 2021 GMC Sierra 3500HD 6.6L L8T
- 2022 GMC Sierra 3500HD 6.6L L8T
- 2023 GMC Sierra 3500HD 6.6L L8T
- 2024 GMC Sierra 3500HD 6.6L L8T
Why Buy from Beefcake Racing?
Beefcake Racing is a trusted Whipple Superchargers dealer with deep experience supporting GM heavy-duty truck performance builds. Our team helps you select the right supercharger system, tuning path, and supporting components to ensure maximum power, reliability, and confidence.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
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