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Top Street Performance

V Series GM LS 105 mm Billet Aluminum Throttle Body Elbow with 4150 Flange - Natural

V Series GM LS 105 mm Billet Aluminum Throttle Body Elbow with 4150 Flange - Natural

SKU: SKU: 81142

Regular price $506.84
Sale price $506.84 Regular price $575.95
Shipping calculated at checkout.

In stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.

Product Details

Features

  • Throttle-body airflow design supports dependable throttle response and properly matched EFI airflow characteristics.
  • Aluminum elbow construction with natural finish helps position the throttle body while maintaining clean engine-bay fitment.
  • Performance and Yes provisions should be planned around sensor routing and accessory clearance.
  • Commonly used in Chevrolet Silverado, GMC Sierra, and Chevrolet Camaro LS applications; verify intake and ECU compatibility before installation.

Description

Designed for GM LS fuel injection applications, this throttle body elbow helps adapt EFI throttle body placement to 4150-style intake layouts while supporting clean airflow routing.

Throttle Body Adapter Fitment
Main port inside diameter is 105 mm. Intake manifold flange style is 4150 Square Bore. Height is listed as 5.120 in.. These dimensions should be checked against hood clearance and throttle body placement.

Elbow Construction & Layout
Aluminum construction with a natural finish and throttle cable bracket included: Yes. The elbow helps create a clean transition between intake manifold and throttle body.

Sensor / Port Provisions
MAP sensor port included: Yes. Vacuum ports included: Performance. Nitrous port provision: Yes mm. Plan sensor placement, vacuum routing, and accessory clearance before installation.

Installation & Clearance Matching
Common use cases include Chevrolet Silverado, GMC Sierra, Chevrolet Camaro. Verify throttle body size, 4150 flange compatibility, cable bracket needs, and hood clearance before final assembly.

Specs

ColorNatural
Fuel System TypeElectronic Fuel Injection
Gasket Or Seal IncludedNo
Grade TypePerformance
Height5.120 in.
Intake Manifold Flange Style4150 Square Bore
Main Port Inside Diameter105 mm
Manifold Absolute Pressure Sensor Port IncludedYes
MaterialAluminum
Meth Injection/Boost Reference Port Thread Size(2) 0.125 in. NPT
Meth Injection/Boost Reference Ports IncludedYes
Mounting Hardware IncludedYes in.
Mounting Hole Quantity4
Nitrous Port IncludedYes mm
Nitrous Port Thread Size0.0625 in. NPT
Port Plugs IncludedYes
Port Quantity1
QuantitySold individually
QuantitySold individually
Throttle Body Bore Size105 mm
Throttle Cable Bracket IncludedYes
Vacuum Port Thread Sizes(1) 0.375, (2) 0.250 in. NPT
Vacuum Ports IncludedPerformance

Engine Fitment

COMPATIBLE WITH:
CHEVROLET SMALL BLOCK V8 GEN. III/IV (LS BASED)
• 4.8 L / 293 in3
• 5.3 L / 325 in3
• 5.7 L / 346 in3
• 6.0 L / 364 in3
• 6.2 L / 376 in3

NOTES
• Fits intake with Holley 4150 carburetor flange
• 105 mm throttle body opening with stock 4-bolt pattern

COMMON VEHICLE APPLICATIONS:
Chevrolet Silverado
GMC Sierra
Chevrolet Camaro
Chevrolet Corvette

Q&A

What applications is this throttle body compatible with?
This throttle body is designed for COMPATIBLE WITH: and CHEVROLET SMALL BLOCK V8 GEN. III/IV (LS BASED).


Will this throttle body fit GM LS applications?
Yes, this throttle body is designed for compatible GM LS-based applications and should be matched to the correct intake and electronics.


What size throttle body is this?
This throttle body features a 105 mm bore size, which can affect airflow capacity and overall engine performance.


Do I need to verify flange compatibility before installation?
Yes, flange pattern and sealing surface compatibility should always be confirmed before installation.


What type of throttle body is this?
This is a performance throttle body designed for electronic fuel injection applications.


Will this throttle body help improve throttle response?
Yes, a properly matched performance throttle body can help improve airflow response and throttle feel compared to a more restrictive stock-style unit.


Do I need to match the throttle actuation style to my setup?
Yes, throttle actuation style must match the intended control setup for proper operation and installation.


Do I need to verify sensor compatibility before installation?
Yes, throttle body sensor and connector compatibility should always be confirmed against your engine management system.


Does this throttle body include a MAP sensor port?
Yes, this throttle body includes a MAP sensor port provision to support compatible engine management setups.


Do I need additional parts for installation?
Depending on your setup, you may need a gasket, hardware, adapters, or tuning support during installation.


Is this throttle body a good upgrade from stock?
Yes, this throttle body is a strong upgrade for compatible applications that need improved airflow, better throttle response, and performance-oriented fit and finish.


Will this throttle body help support added airflow demand?
Yes, a properly matched performance throttle body can help support engines with intake, camshaft, cylinder head, or forced induction upgrades that demand more airflow.


Do I need tuning after installing a throttle body?
Depending on the application and the size change, tuning may be recommended to get the best drivability and performance results.


Does the natural finish affect performance?
No, the natural finish does not change throttle body performance—it provides a raw functional appearance.


How should I maintain the natural finish?
Routine cleaning will help keep the natural finish looking good and reduce surface corrosion over time.

Emissions Notice

This product is legal for off road use and non pollution controlled vehicles (1965 & older); however, it has not been tested or approved by the California Air Resources Board (CARB) for highway vehicles in the state of California. By purchasing this product, buyer agrees it will not be used on pollution controlled vehicles in California, or in a state with similar emissions regulations.