Granatelli Motor Sports GM LS3 6.2L Drive-By-Wire Billet Throttle Body GMTBLS3

Granatelli Motorsports 103mm RACE Throttle Body – LSX Drive-By-Wire

SKU: GMTBLS3

TUNE MAY BE REQUIRED

Trailblazer SS owners must call before ordering for proper calibration.

Built for serious LSX performance, the Granatelli 103mm RACE Throttle Body is CNC-machined from high-grade 6061-T6 billet aluminum to deliver massive airflow and throttle response gains. Designed for both naturally aspirated and forced induction builds, this throttle body is ideal for street and strip setups alike.

Key Features:

• 103mm Bore: Dramatically increases airflow over stock throttle bodies

• Boost-Ready: Handles up to 25 lbs of boost (draw-through or blow-through)

• Enhanced Acceleration: Improves engine response and driveability across the RPM range

• Direct Fit: No need to transfer parts—bolts on easily using a GM 6-pin connector

• Flexible Fitment: Works with factory or aftermarket intake manifolds

• Built to Last: CNC-machined from 6061-T6 billet aluminum for strength and durability

• Designed for LSX Engines: Compatible with LS1, LS2, LS3, LS6, LS7, LS9, LSA, LSX, LQ4 & LQ9

Important Notes:

• TUNE MAY BE REQUIRED

• Trailblazer SS applications require calibration – please call before ordering

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.