Granatelli 103mm Throttle Body - Polished - LT1/LT4/LT5

Granatelli Motorsports GMTBLT4 103mm Drive-By-Wire Throttle Body – Natural Finish

TUNE MAY BE REQUIRED

Unlock real performance gains with the Granatelli Motorsports GMTBLT4 103mm throttle body. Precision CNC-machined from billet 6061-T6 aluminum, this throttle body is built to maximize airflow, throttle response, and overall engine efficiency. Perfect for serious enthusiasts looking to get more out of their GM LT engine.

Key Features & Performance Highlights:

• Massive 103mm Bore: Increases airflow for more power and quicker throttle response

• Dyno-Tested Gains: On a stock 2017 Camaro LT1 (E60, headers, Rotofab CAI, Holley Hi-Ram), switching from the OEM throttle body to the GMTBLT4 delivered +20 RWHP and +17 lb-ft—from 425.9 to 445.7 RWHP, and 376.6 to 393.4 lb-ft torque

• Designed for Aftermarket Manifolds: Direct bolt-on with most aftermarket intakes

• Spacer Available for Factory Fitment: Use part #GMTBLTSPC if pairing with a factory intake or non-ported supercharger

• Supports Boosted Builds: Electronic motors rated for up to 25 lbs of boost (draw or blow-through)

• Durable Construction: CNC-machined 6061-T6 billet aluminum with natural finish

• Quick Installation: Includes gasket and hardware; installs in under 20 minutes

• Vehicle Compatibility: Fits all 2014–2024 GM LT 5.3L & 6.2L engines in Chevrolet, GMC, and Cadillac applications

Important Notes:

• TUNE MAY BE REQUIRED after installation to achieve optimal performance

• 5.3L models must use an aftermarket 6.2L-style intake manifold

• Factory intake or non-ported superchargers require manifold spacer #GMTBLTSPC

Elevate your vehicle's performance with the Granatelli Motorsports GMTBLT4 103mm throttle body. Whether you're aiming for improved throttle response, increased horsepower, or enhanced acceleration, this throttle body is a valuable upgrade for your GM LT engine.