Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body - GMTBLT4

$665.08

Model: GMTBLT4 Manufacturers: Granatelli

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Description

Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body - GMTBLT4

Give your Gen V LT engine the airflow it needs with the Granatelli 103mm billet Drive-By-Wire throttle body. Built for LT1, LT4 and LT5 performance applications, it combines a larger bore, strong electronic throttle control and precision billet construction for serious naturally aspirated and boosted builds.

The Granatelli GMTBLT4 103mm DBW Throttle Body is CNC-machined from 6061-T6 billet aluminum and uses a factory-style GM 6-pin electronic connector. Its 103mm opening increases airflow capacity while maintaining modern Drive-By-Wire operation.

103MM AIRFLOW FOR GEN V LT PERFORMANCE.

LT1 • LT4 • LT5 • BOOST-READY

A larger airflow path helps support modified LT engines that have outgrown the factory throttle body.

Key Features

103mm throttle bore for increased airflow
Designed for compatible GM LT1, LT4 & LT5 engines
Electronic Drive-By-Wire operation
Factory-style GM 6-pin connector
CNC-machined 6061-T6 billet aluminum
Complete electronic throttle-body assembly
Designed for naturally aspirated, supercharged and turbocharged applications
Suitable for high-performance street and race builds
No transfer of factory throttle-body electronics required
Made in the USA

More Airflow for LT1, LT4 & LT5 Builds

The larger 103mm throttle opening helps reduce inlet restriction on modified Gen V LT engines. It is an excellent supporting upgrade for high-flow intake manifolds, camshaft upgrades, ported heads, superchargers and turbo systems where increased airflow becomes critical.

Compatible GM Gen V Applications

LT1 LT4 LT5 6.2L Gen V

Important Fitment Notice: Verify your GM 6-pin DBW connector, intake-manifold bolt pattern, throttle opening and available clearance before ordering.

Factory Manifold / Non-Ported Supercharger: Granatelli specifies that the GMTBLTSPC spacer/adapter is required when installing this 103mm throttle body on a factory manifold or compatible non-ported supercharger inlet.

Tuning Notice: A tune may be required for optimum throttle response, drivability and performance after installation.

Key Features & Benefits

Application-focused Granatelli Motor Sports design
Built for dependable performance and service
Designed for enthusiasts, professional installers, and performance builds

Fitment & Installation

Confirm the part number, vehicle or engine application, dimensions, and supporting components before installation. Modified vehicles may require additional clearance, fabrication, calibration, or related hardware depending on the combination.

Frequently Asked Questions

Why upgrade a throttle body?
A performance throttle body can support increased airflow when the rest of the engine combination can use it.

Will this work on a modified vehicle?
Compatibility depends on the complete vehicle combination. Confirm the listed application and supporting components before installation.

Why Choose Granatelli Motor Sports?

Granatelli Motor Sports develops performance components for real-world street, street/strip, race, and custom applications, with an emphasis on practical performance, dependable construction, and integration into serious automotive builds.

Throttle Bodies

This product was added to our catalog on Thursday 17 September, 2026.

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