Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body – GMTBLT4
Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body – GMTBLT4
Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body | GMTBLT4
Give your GM Gen V LT1, LT4 or LT5 the airflow it needs with the Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body. Precision CNC-machined from 6061-T6 billet aluminum with a natural aluminum finish, this 103mm drive-by-wire throttle body is built for modified naturally aspirated and forced-induction combinations.
Whether you are chasing tenths at the track or want sharper throttle response on the street, the GMTBLT4 is a bolt-on upgrade for LT builds running a high-flow intake, ported heads or boost.
103mm of Serious Airflow
Built for GM Gen V LT1, LT4 or LT5 combinations that have outgrown the factory throttle body.
Key Features
103mm Bore
Larger throttle opening increases available airflow over factory-size throttle bodies.
6061-T6 Billet Aluminum
CNC-machined from high-grade billet aluminum for strength and precise fitment.
Drive-By-Wire Control
Electronic throttle control for smooth, responsive throttle operation.
Natural Aluminum Finish
Natural aluminum finish for a clean, high-end look under the hood.
Street, Strip & Boost
Suited to modified naturally aspirated, supercharged and turbocharged builds. Designed to handle up to 25 lbs of boost.
No Parts Swapping
Complete assembly. No need to transfer internal components from the original throttle body.
Applications
- GM Gen V LT1
- GM Gen V LT4
- GM Gen V LT5
- Also available in black: GMTBLT4B
Tuning Notice: A tune may be required after installation for proper idle quality, drivability and optimum performance.
Connector: Uses the factory-style GM 6-pin drive-by-wire connector.
Fitment Notice: Verify your intake manifold opening, bolt pattern, connector and clearance before ordering.
Why Choose Granatelli Motor Sports?
Granatelli Motor Sports has built performance parts since 1949. Our components are designed for real-world street, street/strip, race and show applications, with a focus on dependable construction and practical performance. Questions about fitment? Call us at 1-805-486-6644, Monday–Friday, 8am–5pm PST.