Katech LSA & LS9 CNC Ported Throttle Body

The Katech 87mm CNC-Ported Throttle Body for LSA and LS9 applications is engineered to increase airflow efficiency, throttle response, and overall engine performance on supercharged GM platforms. Precision CNC porting and Katech’s race-validated airflow development ensure smooth, consistent airflow while maintaining OEM-level driveability and electronic throttle control functionality.

Designed specifically for LSA and LS9 supercharged engines, this throttle body is ideal for high-performance street, track, and motorsports applications where increased airflow demand exceeds factory throttle body capability.

Key Features & Benefits

• 87mm throttle bore for increased airflow capacity

• Precision CNC-ported inlet and bore for improved airflow efficiency

• Katech-branded throttle plate with laser-etched identification

• Maintains OEM electronic throttle control (ETC) functionality

• Improved throttle response under boost

• Designed for high-horsepower supercharged applications

• Direct replacement design for factory LSA / LS9 throttle bodies

Engineering & Performance

Each Katech throttle body is CNC-ported in-house to optimize airflow transitions and reduce restriction at the throttle inlet and bore. Porting is designed to maintain smooth airflow characteristics while supporting increased mass airflow required by higher boost levels and upgraded supercharger systems.

Unlike generic porting services, Katech applies race-proven airflow strategies developed through decades of GM LS-based engine development. The result is improved throttle response, reduced pressure drop, and consistent airflow across the full throttle range.

Vehicle Fitment

• GM LSA Supercharged Engines

• GM LS9 Supercharged Engines

Common Applications Include:

Cadillac CTS-V (LSA)

• 2009–2015 CTS-V Sedan

• 2011–2014 CTS-V Coupe & Wagon

Camaro ZL1 (LSA)

• 2012–2015 Gen Camaro ZL1

Corvette ZR1 (LS9)

• 2009–2013 C6 Corvette ZR1

Verify specific vehicle compatibility and tuning requirements prior to installation.

Installation Notes

• Direct bolt-on replacement

• Retains factory electronic throttle control motor and connector

• ECU recalibration may be required for optimal performance depending on combination

Professional installation and calibration are recommended for best results.

Why Choose Katech?

Since 1977, Katech Engineering has delivered race-winning engine components trusted at the highest levels of professional motorsports. Every Katech throttle body is machined, inspected, and validated in-house to ensure repeatable performance, precision fitment, and uncompromising quality.

Part Number KAT-A7554 New GM 87mm throttle body. No core required. CNC ported Offers improved airflow and throttle response over stock throttle body Fits: 5th Gen Camaro ZL1 V2 CTS-V C6 Corvette ZR1