Granatelli Motor Sports GM LS3 6.2L Drive-By-Wire Throttle Body GMTBLS3M

Granatelli Motorsports 103mm RACE Throttle Body – LSX DBW (Cast Aluminum)

TUNE MAY BE REQUIRED

Trailblazer SS owners must call before ordering for calibration.

Upgrade your LSX build with this 103mm RACE throttle body—precision machined from high-grade cast aluminum to handle even the most demanding naturally aspirated and boosted applications

Highlights:

• 103mm Bore: Outflows OEM throttle bodies for stronger, smarter airflow


• Boost-Capable: Electronic motor handles up to 35 lb of boost without flutter or throttle failure


• Smooth Throttle Response: Larger diameter offers crisper, more controlled acceleration


• Plug-and-Play: Designed as a direct replacement—includes supplied adapter and uses GM 6-pin connector


• Intake Versatility: Works with factory or aftermarket manifolds — ideal for TVS, Whipple, or Roots-style superchargers

What You Need to Know:

• TUNE MAY BE REQUIRED


• Trailblazer SS-specific calibration is necessary—please call before ordering

Ideal for enthusiasts building powerful LSX setups, this throttle body delivers real, usable performance with minimal fuss. Bolt-on, tune, and enjoy the difference.