Granatelli GM LT1 / LT4 / LT5 112mm Natural Billet Drive-By-Wire Throttle Body – GMTBLT112

When your Gen V LT build starts demanding serious airflow, give it an intake path built to keep up. The Granatelli 112mm billet Drive-By-Wire throttle body combines a massive bore, responsive electronic throttle control and boost-ready construction for high-horsepower LT1, LT4 and LT5 combinations.

The Granatelli GMTBLT112 112mm Drive-By-Wire Throttle Body is precision CNC-machined from 6061-T6 billet aluminum and features a clean natural aluminum finish. Its large 112mm throttle bore increases available airflow for modified naturally aspirated and forced-induction GM Gen V LT engines.

Designed around the factory-style GM 6-pin Drive-By-Wire connection, the GMTBLT112 provides a complete electronic throttle-body assembly while maintaining OEM-style electronic control. Its high-torque motor and robust electronics are engineered for demanding performance applications, including combinations running up to 25 psi of boost.

112MM OF SERIOUS GEN V LT AIRFLOW.

LT1 • LT4 • LT5 • BOOST-READY TO 25 PSI

Built for modified street cars, race applications and high-horsepower forced-induction combinations, the Granatelli 112mm DBW throttle body gives your LT engine the airflow capacity and electronic throttle control needed to support serious power.

Key Features

• Massive 112mm throttle bore for increased airflow capacity
• Designed for compatible GM LT1, LT4 & LT5 applications
• Electronic Drive-By-Wire throttle control
• Uses the factory-style GM 6-pin DBW connector
• Precision CNC-machined from 6061-T6 billet aluminum
• Natural aluminum finish
• High-torque electronic motor for responsive throttle operation
• Robust throttle electronics designed for demanding performance use
• Engineered to support up to 25 psi of boost
• Suitable for both naturally aspirated and forced-induction combinations
• Designed to improve airflow volume and throttle response
• Excellent for supercharged, turbocharged and high-RPM naturally aspirated builds
• Complete electronic throttle-body assembly
• No need to transfer internal components from the original throttle body
• Gasket and mounting hardware included
• Made in the USA

Tuning Notice: A tune may be required to ensure proper idle, drivability and optimum performance, especially when the throttle body is installed on a heavily modified or forced-induction engine.

Massive 112mm Airflow Capacity

High-output LT engines move a tremendous amount of air. The 112mm throttle opening provides substantially more inlet area than smaller factory-style throttle bodies, helping reduce a potential restriction when paired with a properly sized intake manifold and high-flow induction system.

Built for LT1, LT4 & LT5 Performance

The GMTBLT112 is designed for GM's Gen V LT engine family, making it an excellent upgrade for modified LT1 naturally aspirated combinations as well as high-output LT4 and LT5 supercharged applications. It is also well suited for custom turbocharged LT builds requiring significantly more inlet airflow.

Engineered for Boost

Forced-induction systems place additional load on the throttle blade and electronic motor. Granatelli equips the GMTBLT112 with a high-torque motor and durable electronic assembly engineered to operate in demanding boosted applications with up to 25 psi.

CNC-Machined 6061-T6 Billet Construction

The throttle-body housing is precision CNC-machined from 6061-T6 billet aluminum for strength, dimensional accuracy and long-term durability. The natural aluminum finish delivers a clean billet appearance that works equally well on street, race and show-quality engine builds.

Complete Drive-By-Wire Assembly

The GMTBLT112 is supplied as a complete electronic throttle-body assembly, eliminating the need to transfer internal components from your original throttle body. Compatible applications retain the factory-style GM 6-pin electronic connection for a clean installation.

Compatible GM Gen V LT Applications

Designed for compatible GM Gen V applications using the correct 6-pin electronic Drive-By-Wire throttle system. Primary engine families include:

Popular Performance Applications

Important Fitment Notice: GMTBLT112 is designed for compatible GM Gen V LT applications using a GM 6-pin Drive-By-Wire throttle 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 idle quality, throttle response, drivability and engine performance, particularly on highly modified or forced-induction combinations.