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Granatelli Motor Sports
Granatelli GM LS / LSX 105mm Polished Billet Drive-By-Wire Throttle Body – GMTBLS105P
Granatelli GM LS / LSX 105mm Polished Billet Drive-By-Wire Throttle Body – GMTBLS105P
SKU:GMTBLS105P
In Stock—More than 10 available
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Granatelli GM LS / LSX 105mm Polished Billet Drive-By-Wire Throttle Body | GMTBLS105P
Give your GM LS or LSX engine the airflow it needs with the Granatelli GM LS / LSX 105mm Polished Billet Drive-By-Wire Throttle Body. Precision CNC-machined from 6061-T6 billet aluminum with a polished finish, this 105mm drive-by-wire throttle body is built for modified naturally aspirated and forced-induction combinations.
The 105mm bore steps up airflow capacity for big-cam, high-RPM and boosted LS combinations, and pairs with large-inlet intake manifolds such as the Granatelli ZILLA 105mm billet LS manifold.
105mm of Serious Airflow
Built for GM LS or LSX engine combinations that have outgrown the factory throttle body.
Key Features
105mm 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.
Polished Finish
Show-quality polished finish for a high-end look under the hood.
Street, Strip & Boost
Suited to modified naturally aspirated, supercharged and turbocharged builds.
No Parts Swapping
Complete assembly. No need to transfer internal components from the original throttle body.
Applications
- GM LS and LSX drive-by-wire applications
- Compatible 105mm-inlet intake manifolds, including Granatelli ZILLA 105mm
- Rated for up to 35 psi of boost
- Also available: natural GMTBLS105 and black GMTBLS105B
Tuning Notice: A tune is 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.
Is the 105mm Right for Your LS?
Choose the GMTBLS105P when your LS runs a 105mm-inlet intake manifold, such as the Granatelli ZILLA 105mm, and the engine can use the extra air: a bigger cam, ported heads, high RPM or boost. On a stock-style LS3 intake, the 103mm GMTBLS3B billet or GMTBLS3M cast is the usual pick. See every size in the LS throttle body collection.
Specifications
| Part number | GMTBLS105P |
| Bore | 105mm |
| Body | CNC-machined 6061-T6 billet aluminum, polished finish |
| Control | Electronic drive-by-wire |
| Connector | Factory-style GM 6-pin |
| Boost rating | Up to 35 psi |
| Intake | 105mm-inlet manifolds, including Granatelli ZILLA 105mm |
| Assembly | Complete, no parts to transfer |
| Tuning | Tune required |
| Also available | Natural: GMTBLS105; black: GMTBLS105B |
| Warranty | 90 days; extended 1, 2 or 3 year available |
| Made in | USA |
GMTBLS105P FAQ
Will the GMTBLS105P fit a stock LS3 intake?
It is made for 105mm-inlet intake manifolds such as the Granatelli ZILLA 105mm. On a stock-style LS3 intake, the 103mm GMTBLS3B (billet) or GMTBLS3M (cast) is the usual choice. Verify your manifold opening, bolt pattern and clearance, or call 1-805-486-6644.
Do I need a tune?
Yes. A tune is required after installation for proper idle quality, drivability and performance.
What connector does it use?
The factory-style GM 6-pin drive-by-wire connector. It is a complete assembly, so nothing transfers from your original throttle body.
What is the difference between GMTBLS105B, GMTBLS105 and GMTBLS105P?
The finish. GMTBLS105B is black, GMTBLS105 is natural and GMTBLS105P is polished. All three are 105mm billet drive-by-wire throttle bodies.
How much boost can the GMTBLS105P handle?
It is rated for up to 35 psi of boost, the same as every Granatelli LS and LT throttle body.
Will a 105mm throttle body add horsepower?
Only when the throttle body was the restriction, such as on big-cam, high-RPM or boosted LS combinations with a 105mm-inlet manifold. Granatelli Motor Sports does not quote a fixed horsepower number.
What is the warranty?
90 days, with optional extended 1, 2 or 3 year coverage at checkout.
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.
