Granatelli GM LS / LSX 103mm Polished Billet Drive-By-Wire Throttle Body – GMTBLS3P

Open up your LS intake system with more airflow and a show-quality polished finish. The Granatelli 103mm billet Drive-By-Wire throttle body is built for performance combinations that need more air, stronger electronic throttle control and reliable operation under boost.

The Granatelli GMTBLS3P 103mm Drive-By-Wire Throttle Body features a large 103mm bore and precision CNC-machined 6061-T6 billet aluminum construction. Its polished finish gives the unit a premium appearance while maintaining the strength and durability required for serious LS performance applications.

A high-torque servo motor and complete electronic throttle-control assembly are engineered for naturally aspirated and forced-induction combinations, with the throttle assembly tested for operation at up to 25 psi of boost.

103MM AIRFLOW WITH A SHOW-QUALITY FINISH.

HIGH-TORQUE DBW MOTOR • TESTED TO 25 PSI

Granatelli's 103mm polished billet throttle body combines increased airflow with electronic throttle control engineered for high-performance LS engines, including naturally aspirated and boosted combinations.

Key Features

• Large 103mm throttle bore for increased airflow capacity
• Designed for high-performance GM LS & LSX applications
• Electronic Drive-By-Wire throttle control
• Uses a factory-style GM 6-pin DBW connector
• Precision CNC-machined from 6061-T6 billet aluminum
• Polished show-quality finish
• High-torque servo motor for reliable electronic throttle operation
• Designed to help prevent unwanted throttle-blade closure under boost
• Boost tested up to 25 psi
• Excellent for naturally aspirated and forced-induction combinations
• Compatible with Whipple, TVS, Roots-style and other supercharger applications when properly matched
• Complete electronic throttle-control assembly
• No transfer of internal electronics from the original throttle body required
• Plug-and-play electrical connection on compatible applications
• Made in the USA

Tuning Notice: A tune may be required to optimize throttle operation, drivability and performance after increasing airflow, especially on heavily modified or forced-induction combinations.

103mm Bore for Increased LS Airflow

The 103mm throttle opening provides additional inlet area for performance LS engines that have outgrown smaller factory throttle bodies. Reducing restriction at the throttle body can help a properly matched intake system support higher airflow demand at elevated RPM and horsepower levels.

Built for Naturally Aspirated & Boosted Builds

Whether the engine relies on atmospheric pressure or a supercharger to move air, the GMTBLS3P is built for high-performance use. Its high-torque electronic motor helps maintain throttle-blade control under demanding conditions and has been tested at up to 25 psi of boost.

Polished 6061-T6 Billet Construction

Each GMTBLS3P is precision CNC-machined from 6061-T6 billet aluminum, combining strength, dimensional accuracy and reduced weight. The polished finish gives the throttle body a clean, high-end appearance that works equally well on performance street cars, show builds and race applications.

Complete GM Drive-By-Wire Electronics

The throttle body comes with its complete electronic throttle-control assembly, so there is no need to transfer internal electronics from the factory throttle body. Compatible installations use the factory-style GM 6-pin Drive-By-Wire connector.

Compatible GM LS & LSX Applications

Designed for compatible GM LS engines using the appropriate 6-pin Drive-By-Wire throttle-control system. Granatelli lists compatibility with:

Popular Performance Applications

Important Fitment Notice: GMTBLS3P is designed for compatible GM LS applications using a GM 6-pin Drive-By-Wire throttle-control system. Verify your electrical connector, intake-manifold bolt pattern, throttle opening and available clearance before ordering.

Tuning Notice: A tune may be required after installation to optimize throttle response, drivability and engine performance.

Trailblazer SS: Not compatible with Trailblazer SS applications.