Granatelli GM LS / LSX 105mm Black Billet Drive-By-Wire Throttle Body – GMTBLS105B

Feed your LS engine the airflow it needs without sacrificing electronic throttle control. The Granatelli 105mm black billet Drive-By-Wire throttle body combines a large-bore airflow path, high-torque electronics and boost-ready construction for serious naturally aspirated and forced-induction builds.

The Granatelli GMTBLS105B 105mm Drive-By-Wire Throttle Body is precision CNC-machined from 6061-T6 billet aluminum and finished in a sleek black finish. Its large 105mm bore is designed to increase airflow capacity on high-performance GM LS and LSX engines while retaining modern electronic Drive-By-Wire throttle operation.

A high-torque electronic motor and reinforced throttle-blade design help maintain stable throttle control under demanding conditions, including applications producing 25+ psi of boost. Whether you're building a naturally aspirated LS, supercharged street car or high-horsepower turbo combination, the GMTBLS105B is built to keep airflow moving.

105MM AIRFLOW BUILT FOR SERIOUS LS POWER.

HIGH-TORQUE DBW MOTOR • 25+ PSI CAPABILITY

A massive 105mm opening helps feed high-output LS engines while the reinforced electronic throttle assembly is engineered to maintain control when airflow and boost pressure climb.

Key Features

• Large 105mm throttle bore for increased airflow capacity
• Designed for high-performance GM LS & LSX applications
• Electronic Drive-By-Wire throttle control
• Compatible with late-model GM-style 6-pin DBW systems
• Precision CNC-machined from 6061-T6 billet aluminum
• Black finish for an aggressive, performance-oriented appearance
• High-torque electronic stepper motor
• Reinforced throttle-blade design
• Engineered to handle 25+ psi of boost
• Designed to help prevent throttle-blade slamming under high boost
• Unique blade design helps maintain throttle control during high-boost operation
• Excellent for naturally aspirated, supercharged and turbocharged combinations
• Compatible with properly matched factory and aftermarket intake manifolds
• Direct bolt-on design with supplied adapter for compatible applications
• No transfer of internal throttle-body components required
• Made in the USA

Tuning Notice: A tune may be required, especially on forced-induction, aggressively modified or custom combinations. Proper calibration helps ensure correct electronic throttle operation, drivability and performance.

105mm Bore for Increased Airflow

As horsepower increases, so does the engine's demand for air. The 105mm throttle opening provides significantly more inlet area than smaller factory-style throttle bodies, helping reduce a potential restriction in high-flow intake systems and allowing compatible LS combinations to breathe more efficiently throughout the RPM range.

Engineered for 25+ PSI Boost

Boost pressure puts substantial force against the throttle blade. Granatelli uses a high-torque stepper motor and reinforced throttle assembly designed to operate with more than 25 psi of boost, helping prevent unwanted blade movement or throttle slamming during demanding high-boost pulls.

CNC-Machined 6061-T6 Billet Construction

The GMTBLS105B is precision CNC-machined from 6061-T6 billet aluminum for strength, dimensional accuracy and long-term durability. The black finish adds a clean, aggressive appearance that looks right at home on a serious street, show or race LS engine.

Late-Model GM Drive-By-Wire Control

Designed around a late-model GM-style 6-pin DBW connection, the GMTBLS105B allows compatible LS applications to retain electronic throttle control while stepping up to a much larger 105mm airflow path.

Built for Naturally Aspirated & Boosted LS Builds

The 105mm size works especially well on combinations with increased airflow demand, including large-displacement LS engines, aggressive naturally aspirated builds, supercharged applications and turbocharged combinations. It can also be paired with compatible aftermarket intake manifolds from manufacturers such as FAST, Holley and MSD when the proper flange and adapter configuration are used.

Compatible GM LS & LSX Applications

Designed for compatible high-performance GM LS applications using the appropriate late-model 6-pin Drive-By-Wire system. Common engine families include:

Popular Performance Applications

Important Fitment Notice: GMTBLS105B is designed for compatible GM LS and LSX applications using a late-model GM-style 6-pin Drive-By-Wire throttle system. Verify your electrical connector, intake-manifold bolt pattern, throttle opening and available clearance before ordering. An adapter may be required for some intake manifolds.

Tuning Notice: A tune may be required for proper operation and optimum performance, especially on forced-induction or aggressively modified combinations.

Trailblazer SS: Contact Granatelli before ordering for Trailblazer SS applications to confirm calibration compatibility.