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What size is the LQ9 throttle body?

The LQ9 throttle body is a 90mm unit, which is a common size for high-performance V8 engines. The LQ9 is a 6.0-liter V8 engine found in various General Motors vehicles, including the Chevrolet Silverado, Cadillac Escalade, and GMC Sierra.


What is a Throttle Body?


The throttle body is a critical component in a vehicle's fuel injection system. It is responsible for controlling the amount of air that enters the engine, which in turn regulates the engine's power output. The size of the throttle body is an important factor in determining an engine's performance capabilities.


The LQ9 Throttle Body Specifications


The LQ9 throttle body has a diameter of 90mm, which is a relatively large size for a production V8 engine. This larger throttle body allows for increased airflow, enabling the engine to produce more power and torque. The LQ9 throttle body is made of aluminum and features a drive-by-wire design, which provides more precise throttle control compared to traditional cable-operated throttle bodies.


Benefits of a Larger Throttle Body



  • Increased airflow, leading to more power and torque output

  • Improved throttle response and acceleration

  • Better engine efficiency and fuel economy at higher RPMs

  • Enhanced tuning capabilities for performance modifications


The larger 90mm throttle body is a key component that contributes to the LQ9 engine's reputation for strong performance and power delivery.

What size is the throttle body of the LS4?


76mm
Intake Manifold and Throttle Body
The LS4 has a small 76mm throttle body. It also has a smaller intake manifold than other LS engines. The smaller units are needed to clear everything else under the hood. However, they restrict the engine's ability to breathe.



Are all LS throttle bodies the same?


The earlier models are a three bolt type, meaning they bolt to the intake only using three bolts. The newer generation throttle bodies are 4 bolt. Different vehicle also have different size throttle bodies, and many aftermarket companies sell even bigger throttle bodies like the 102 mm.



What size is lq4 throttle body?


Chevy LQ4 Engine Specs

Other Specifications
Intake ManifoldTruck Style
Throttle Body80mm, 3-Bolt
Throttle ControlAll Cable Operated, 1999-02
Drive-by-Wire phased in 2003-04, on most models



What size throttle body is on a LQ9?


Chevy LQ9 Engine Specs

Other Specifications
Intake ManifoldTruck Style
Throttle Body80mm, 3-Bolt
Throttle ControlElectronic (Drive-by-Wire)
Fuel Injector Flow25.2 lbs



Are bigger throttle bodies better?


So when we go larger in our throttle body size, we're actually reducing the air velocity for a given airflow so what this can end up doing is hampering our low RPM performance so going larger in an individual throttle body size can give you a small improvement potentially in power but quite often that's going to be at ...



What is the difference between LQ4 and LQ9?


The only differences were: The LQ4 came with dished pistons. The LQ9 came with flat top pistons. (This raised the compression ratio, horsepower, and torque.)



What size throttle body for 500 hp?


In terms of most people modifying these engines for street use, generally find that probably going to be somewhere in the region of 500 to 600 horsepower, that's a fairly healthy combination that's fairly easy to achieve without breaking the bank and generally in that instance, somewhere between 70 and 75 mm for the ...



What size is LQ9 throttle body?


Chevy LQ9 Engine Specs

Other Specifications
Intake ManifoldTruck Style
Throttle Body80mm, 3-Bolt
Throttle ControlElectronic (Drive-by-Wire)
Fuel Injector Flow25.2 lbs



What size throttle body is a 6.0 LS?


LS1/6/4.8/5.3/6.0 Throttle bodies are all the same size 76mm, and come in DBW and cable.



What size are throttle bodies?


Most aftermarket manufacturers produce throttle bodies in the 90-105mm range (some slightly larger) for use with stock and aftermarket LS intakes. Most factory intakes will not accept a throttle blade larger than a 90-92mm due to design with impregnated gasket and bore relation.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.