• Upgrade 103mm throttle body without permanently porting factory LT
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Granatelli Motor Sports

Granatelli GM LT1 / LT4 103mm Throttle Body Adapter Spacer Plate – GMTBLTSPC

Granatelli GM LT1 / LT4 103mm Throttle Body Adapter Spacer Plate – GMTBLTSPC

SKU:GMTBLTSPC

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Granatelli GM LT1 / LT4 103mm Throttle Body Adapter Spacer Plate | GMTBLTSPC

The Granatelli GMTBLTSPC Adapter Spacer Plate lets you run a Granatelli 103mm throttle body on a stock GM LT1 or LT4 intake manifold.

Machined from billet aluminum, it is the simple way to step up to a 103mm throttle body without changing your factory intake.

103mm Airflow on Your Stock LT Intake

Run a Granatelli 103mm throttle body without replacing your factory intake manifold.

Key Features

Stock Intake Compatible

Mounts a Granatelli 103mm throttle body to a stock LT1 or LT4 intake.

Billet Aluminum

Machined from billet aluminum for strength and precise fit.

LT1 / LT4

Designed for GM Gen V LT1 and LT4 applications.

Pairs with Granatelli

For use with the Granatelli GMTBLT4 and GMTBLT4B 103mm throttle bodies.

Product Details

  • Part number: GMTBLTSPC
  • Material: Billet aluminum
  • Fits: Stock GM LT1 / LT4 intake manifold
  • For: Granatelli 103mm throttle bodies
  • Gasket and hardware: Not included

Note: Gasket and mounting hardware are not included. A tune may be required after a throttle body upgrade.

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.