High-Flow 103mm Throttle Body by Nick Williams for Chevrolet C7 Corvette with LT1 or LT4 Engine (2014–2019)

Description

The Nick Williams 103mm throttle body is a precision-machined high-flow upgrade designed for GM Gen-V LT1 and LT4 drive-by-wire engines, perfect for performance-oriented builds on Corvette, Camaro, CTS-V, and other LT-powered vehicles. CNC-machined from billet aluminum with a black finish, it significantly increases airflow compared to the restrictive factory throttle body, helping improve throttle response, power potential, and engine efficiency when paired with proper supporting mods and a tune. Complete with the integrated stepper motor and electronics, this throttle body is ready for installation with minimal teardown — but requires aftermarket intake compatibility and ECU calibration to unlock full performance benefits.

Fitment Notes

• Fits 2014+ Gen-V LT1 & LT4 GM engines using electronic drive-by-wire throttle control (e.g., C7/C8 Corvette, Camaro SS/ZL1, Cadillac CTS-V)

• Requires an aftermarket intake manifold or ported supercharger inlet to accommodate the larger 103 mm blade — not a direct bolt-on to stock manifold or stock LT4 supercharger inlet.

• Uses the factory 6-pin wiring connector for throttle control; existing harness compatibility retained.

• Tuning is required after installation to ensure proper drive-by-wire response and avoid faults.

Included

• Billet aluminum throttle body (103 mm diameter).

• Electronic drive-by-wire assembly with integrated stepper motor and electronics.

• Connector plug and harness interface.

• Hardware kit.

Product Specs

• Throttle Blade Diameter: 103 mm (oversized for increased airflow).

• Inlet Bore: ~108 mm outer diameter to smoothly feed the larger blade.

• Material: CNC-machined billet aluminum with anodized black finish.

• Throttle Control: Electronic drive-by-wire compatible; OEM connector retained.

• Calibration: Requires ECU tuning post-installation for safe operation.

• Finish Options: Black or natural billet aluminum.

Product Features

• Maximized Airflow: The 103 mm butterfly and large bore dramatically reduce restriction vs stock throttle bodies, supporting higher power builds and improved throttle response.

• Integrated Electronics: Includes complete stepper motor and sensor package — no need to reuse OEM throttle body guts.

• Precision CNC Machining: Billet construction and smooth internal flow paths minimize turbulence and promote efficient airflow.

• Performance-Focused Design: Ideal for vehicles with upgraded intakes, superchargers, or extensive engine modifications.

• Direct Harness Compatibility: Works with GM Gen-V wiring harness through the stock 6-pin connector.

• Raw or Black Anodized Finish: Premium look under the hood with enhanced corrosion resistance

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