Collection: LS/LT Air and Fuel Delivery
Shop high-performance LS and LT air and fuel delivery components designed to improve airflow, fuel efficiency, and overall engine performance. From intake manifolds and throttle bodies to fuel injection systems and supporting components, these parts help ensure optimal air and fuel mixture for maximum power. Ideal for LS and LT engine swaps, street builds, and high-performance applications.
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GM LS Cathedral Port V Series Billet Aluminum Mid-Rise Intake Manifold - Natural
Vendor:Top Street PerformanceSKU: 81407Regular price $2,918.75Sale price $2,918.75 Regular priceUnit price / per$3,316.76Save $398.01 -
GM LS Cathedral Port V Series Billet Aluminum Mid-Rise Intake Manifold - Black
Vendor:Top Street PerformanceSKU: 81407BKRegular price $4,560.55Sale price $4,560.55 Regular priceUnit price / per$5,182.44Save $621.89 -
GM LS Cathedral Port V Series Billet Aluminum Low-Rise Intake Manifold - Natural
Vendor:Top Street PerformanceSKU: 81406Regular price $4,395.55Sale price $4,395.55 Regular priceUnit price / per$4,994.94Save $599.39 -
GM LS Rectangle Port V Series Billet Aluminum Low-Rise Intake Manifold - Natural
Vendor:Top Street PerformanceSKU: 81412Regular price $3,516.44Sale price $3,516.44 Regular priceUnit price / per$3,995.95Save $479.51 -
GM LS Rectangle Port V Series Billet Aluminum Low-Rise Intake Manifold - Black
Vendor:Top Street PerformanceSKU: 81412BKRegular price $4,395.55Sale price $4,395.55 Regular priceUnit price / per$4,994.94Save $599.39 -
GM LS 102mm Aluminum Intake Manifold - Clear Anodized
Vendor:Top Street PerformanceSKU: 81001CARegular price $679.01Sale price $679.01 Regular priceUnit price / per$771.60Save $92.59 -
GM LS 102mm Aluminum Intake Manifold - Black
Vendor:Top Street PerformanceSKU: 81001BKRegular price $679.01Sale price $679.01 Regular priceUnit price / per$771.60Save $92.59 -
GM LS Cathedral Port V Series Billet Aluminum Low-Rise Intake Manifold - Black
Vendor:Top Street PerformanceSKU: 81406BKRegular price $4,395.55Sale price $4,395.55 Regular priceUnit price / per$4,994.94Save $599.39 -
Velocity 92 mm 4-Bolt LS Throttle Body - Natural
Vendor:Top Street PerformanceSKU: 81042Regular price $203.70Sale price $203.70 Regular priceUnit price / per$231.48Save $27.78 -
Velocity 92 mm 4-Bolt LS Throttle Body - Black
Vendor:Top Street PerformanceSKU: 81042BKRegular price $203.70Sale price $203.70 Regular priceUnit price / per$231.48Save $27.78 -
Velocity 102 mm 4-Bolt LS Throttle Body - Natural
Vendor:Top Street PerformanceSKU: 81012Regular price $203.70Sale price $203.70 Regular priceUnit price / per$231.48Save $27.78 -
Velocity 102 mm 4-Bolt LS Throttle Body - Black
Vendor:Top Street PerformanceSKU: 81012BKRegular price $203.70Sale price $203.70 Regular priceUnit price / per$231.48Save $27.78 -
Velocity GM LS 102mm Fly-by-Wire Billet Aluminum Throttle Body Housing - Black
Vendor:Top Street PerformanceSKU: 81041BKRegular price $440.00Sale price $440.00 Regular priceUnit price / per$500.00Save $60 -
Velocity GM LS 102mm Fly-by-Wire Billet Aluminum Throttle Body Housing - Natural
Vendor:Top Street PerformanceSKU: 81041Regular price $440.00Sale price $440.00 Regular priceUnit price / per$500.00Save $60 -
Velocity GM LS 102mm Fly-by-Wire Billet Aluminum Throttle Body Housing - Polished
Vendor:Top Street PerformanceSKU: 81041PRegular price $440.00Sale price $440.00 Regular priceUnit price / per$500.00Sold out -
V Series GM LS 105 mm Billet Aluminum Throttle Body Elbow with 4150 Flange - Black
Vendor:Top Street PerformanceSKU: 81142BKRegular price $633.55Sale price $633.55 Regular priceUnit price / per$719.94Save $86.39 -
V Series GM LS 105 mm Billet Aluminum Throttle Body Elbow with 4150 Flange - Natural
Vendor:Top Street PerformanceSKU: 81142Regular price $506.84Sale price $506.84 Regular priceUnit price / per$575.95Save $69.11 -
GM LS 104mm Cast Aluminum Throttle Body Elbow with 4150 Flange - Polished
Vendor:Top Street PerformanceSKU: 81141PRegular price $192.50Sale price $192.50 Regular priceUnit price / per$218.75Save $26.25 -
GM LS 104mm Cast Aluminum Throttle Body Elbow with 4150 Flange - Satin
Vendor:Top Street PerformanceSKU: 81141Regular price $165.00Sale price $165.00 Regular priceUnit price / per$187.50Save $22.50 -
GM LS 104mm Cast Aluminum Throttle Body Elbow with 4150 Flange - Black
Vendor:Top Street PerformanceSKU: 81141BKRegular price $178.75Sale price $178.75 Regular priceUnit price / per$203.13Save $24.38
About Our LS/LT Air and Fuel Delivery
The air and fuel delivery system is a critical part of any LS or LT engine, responsible for supplying the precise mixture of air and fuel needed for efficient combustion. Proper airflow and fuel delivery directly impact horsepower, throttle response, and overall engine efficiency.
LS engines typically use multi-port fuel injection systems, while LT engines incorporate advanced direct injection technology, allowing for improved fuel atomization and increased efficiency. These systems deliver fuel more precisely, helping modern engines produce more power while maintaining better fuel economy.
Key components in LS and LT air and fuel delivery systems include intake manifolds, throttle bodies, fuel injectors, fuel pumps, fuel rails, and fuel pressure regulators. These components work together to maintain proper airflow and consistent fuel pressure, ensuring the engine receives the correct air-fuel ratio under all operating conditions.
Upgrading air and fuel delivery components can significantly improve engine performance. High-performance intake manifolds are designed to increase airflow and reduce restrictions, allowing engines to produce more horsepower and torque. Optimized fuel systems ensure consistent fuel delivery, especially in high-performance or forced induction applications where demand is increased.
In LS swap applications, properly designed air and fuel systems are essential for reliable operation and performance. Builders often upgrade to high-flow fuel pumps, performance injectors, and aftermarket intake systems to support increased power levels and ensure compatibility with custom setups.
LS and LT air and fuel delivery components are especially important in performance builds where efficiency and power output are critical. Whether you're upgrading a stock engine or building a high-horsepower setup, choosing the right components helps ensure optimal combustion, improved performance, and long-term reliability.


















