Harrop TVS2650 Supercharger Upgrade Kit (99-KSM64K51) - 2016-2019 Cadillac CTS-V & 2017-2024 Camaro ZL1 LT4
Upgrade the factory LT4 TVS1740 supercharger with the Harrop TVS2650 Supercharger Upgrade Kit, engineered as a direct bolt-on solution for high-performance Chevrolet Camaro ZL1 and Cadillac CTS-V applications. By combining Eaton's larger TVS2650 rotating group with a Harrop-designed LT4 manifold and high-capacity intercooling system, this package delivers substantially greater airflow capability, improved boost response, and stronger thermal performance for serious street, track, and race builds.
The system is designed around the factory LT4 architecture, retaining the OEM accessory-drive layout, throttle-body position, fuel-line strategy, and sensor configuration. This allows straightforward mechanical integration while providing the airflow headroom needed for significantly higher power levels.
Features
- Eaton TVS2650 rotating group with substantially greater airflow capacity than the factory LT4 TVS1740
- Direct bolt-on replacement for factory LT4 supercharger systems
- Front-drive, front-inlet configuration
- Retains OEM accessory-drive layout
- Retains factory sensor strategy
- Retains OEM throttle-body position
- OEM fuel line is rerouted and retained
- Dual-pass integrated intercooler system
- Approximately 2.5 times greater intercooler core capacity than the factory setup
- Improved charge-air temperature control during sustained high-load operation
- Precision-machined billet input drive assembly
- Designed for high-load operation and multiple pulley configurations
- Supports both 8-rib and 10-rib supercharger drive systems
- OE-level Harrop engineering and manufacturing
TVS2650 Airflow Upgrade
The Eaton TVS2650 rotating group provides a major increase in airflow potential over the factory LT4 TVS1740. Because the larger supercharger can move more air at a lower rotor speed for a given boost level, it can help reduce discharge temperatures while providing additional headroom for higher-power combinations.
This makes the Harrop system an excellent foundation for modified LT4 applications where the factory supercharger has become a limiting factor.
High-Capacity Dual-Pass Intercooling
The Harrop LT4-specific cast intake manifold incorporates a dual-pass integrated intercooler system with approximately 2.5 times the core capacity of the factory arrangement. The larger intercooler volume and increased heat-transfer capability help stabilize charge-air temperatures during repeated high-load use.
This additional thermal capacity is especially valuable for track driving, roll racing, aggressive street use, and other applications where consistent intake air temperatures are critical to repeatable performance.
OEM-Style Integration
The TVS2650 kit is engineered to integrate with the existing LT4 platform rather than requiring extensive changes to factory systems. The OEM accessory layout, sensor strategy, throttle-body location, and fuel line are retained for a clean installation and straightforward calibration integration.
Throttle Body Compatibility
- Includes adaptor for the factory 87mm LT4 electronic throttle body
- Optional adaptor available for 103mm aftermarket throttle bodies
- Optional adaptor available for 112mm aftermarket throttle bodies
- Optional adaptor available for 120mm aftermarket throttle bodies
Billet Input Drive Assembly
A precision-machined billet input drive assembly is engineered for durability under high supercharger loads. The design supports a wide range of pulley diameters and drive configurations, allowing the system to be tailored to different boost and power goals.
Kit Includes
- Harrop TVS2650 supercharger assembly
- Harrop LT4-specific cast intake manifold
- Dual-pass integrated intercooler cores
- Billet intercooler reservoir
- Throttle-body adaptor for OEM LT4 throttle body
- OEM-spec LT4 TMAP sensor
- MAP sensor provisions
- Bypass boost-control solenoid relocation bracket
- 19mm ID barbed intercooler fittings
- 7/8-inch molded intercooler hoses
- Required fasteners
- Required brackets
- Required installation hardware
Fitment
- 2016 Cadillac CTS-V 6.2L LT4
- 2017 Cadillac CTS-V 6.2L LT4
- 2018 Cadillac CTS-V 6.2L LT4
- 2019 Cadillac CTS-V 6.2L LT4
- 2017 Chevrolet Camaro ZL1 6.2L LT4
- 2018 Chevrolet Camaro ZL1 6.2L LT4
- 2019 Chevrolet Camaro ZL1 6.2L LT4
- 2020 Chevrolet Camaro ZL1 6.2L LT4
- 2021 Chevrolet Camaro ZL1 6.2L LT4
- 2022 Chevrolet Camaro ZL1 6.2L LT4
- 2023 Chevrolet Camaro ZL1 6.2L LT4
- 2024 Chevrolet Camaro ZL1 6.2L LT4
Important Notes
- Supercharger drive pulley is not included and must be specified at the time of purchase.
- 8PK and 10PK supercharger pulley options are available depending on the vehicle's drive system.
- Supporting fuel-system upgrades may be required depending on power goals.
- Intercooler heat-exchanger upgrades may be required depending on power goals and vehicle use.
- Custom ECU calibration is required.
- Professional installation and tuning are required.
- Part Number: 99-KSM64K51
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