What size throttle body is a LS stock?
The stock throttle body size for a LS engine is typically 90mm. This is the standard size used in most LS-powered vehicles from the factory.
Understanding Throttle Body Size on LS Engines
The throttle body is a critical component in the engine's air intake system, responsible for controlling the amount of air that enters the engine. On LS engines, which are a family of small-block V8 engines produced by General Motors, the stock throttle body size is generally 90mm in diameter.
This 90mm throttle body provides sufficient airflow for the engine's stock power output and is designed to work in harmony with the rest of the engine's components. The size of the throttle body can have a significant impact on an engine's performance, as a larger throttle body can allow for increased airflow and potentially higher power output.
Reasons for the 90mm Throttle Body Size
There are a few key reasons why GM chose a 90mm throttle body as the standard size for LS engines:
- Optimal Airflow: The 90mm throttle body provides the right balance of airflow for the LS engine's displacement and power output, ensuring efficient and responsive engine performance.
- Packaging Constraints: The 90mm size fits well within the engine bay and allows for proper clearance with other components, making it a practical choice for vehicle integration.
- Cost Considerations: Using a 90mm throttle body helps keep manufacturing and production costs down, which is important for a mass-produced engine like the LS.
While a larger throttle body may be desirable for high-performance applications, the 90mm size is well-suited for the majority of LS-powered vehicles, providing a good compromise between performance, packaging, and cost.
Upgrading the Throttle Body
For those seeking more power and performance from their LS engine, upgrading to a larger throttle body is a common modification. Typical aftermarket throttle body sizes for LS engines range from 92mm to 105mm, with the most common being 102mm. However, it's important to ensure that any throttle body upgrade is properly matched to the engine's other modifications and tuning to maintain optimal performance and drivability.
What cubic-inch is a 7.0 LS?
427 c.i.d.
7.0L / 427 c.i.d. 4.125 in.
What size throttle body is on a factory LS2?
stock TB is 90mm. the best thing you can do to the TB if you still have the stock sized Intake Manifold, is to have your TB ported and polished.
What does a bigger mm throttle body do?
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 size throttle body is a LS7?
90mm
The GM / ACDelco OEM LS7 90mm electronic throttle body has much more machining than a standard LS2 throttle body to promote better airflow. It has a stronger and quicker motor to withstand forced induction and provides a "snappier" throttle response.
How big is a 6.2 LS3?
376 c.i.d.
Chevy LS3 Engine Specs
| Engine Block Specifications | |
|---|---|
| Block Part Number | 12584724 |
| Displacement | 6.2L / 376 c.i.d. |
| Bore Dia. | 4.065 in. |
| Stroke | 3.622 in. |
What is the 6.2 L engine equal to?
378 cubic inches
To convert engine displacement measurements from one unit to another you can use the following chart. So, 6.2L is (roughly) equivalent to 378 cubic inches.
What size is the LQ9 throttle body?
Chevy LQ9 Engine Specs
| Other Specifications | |
|---|---|
| Intake Manifold | Truck Style |
| Throttle Body | 80mm, 3-Bolt |
| Throttle Control | Electronic (Drive-by-Wire) |
| Fuel Injector Flow | 25.2 lbs |
What size throttle body is on an LS3?
For the OEM intake test we used a Holley 90mm throttle body. It is the same size as the stock LS3 throttle body.
What size is the stock LS throttle body?
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.
What engine came with 823 heads?
What automobile engines will take an 823 head? Vehicles which should accept an unmodified 823 cylinder L92 head include any GM model built between 2008 and the late 2010s, as well as any car previously fitted with an 821 cylinder head or a 5346 fit.
