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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LS EV1 to Multitec Fuel Injector Adapters
Vendor:Top Street PerformanceSKU: 81035Regular price $29.33Sale price $29.33 Regular priceUnit price / per$33.33Save $4 -
LS EV1 to EV6 Fuel Injector Adapters
Vendor:Top Street PerformanceSKU: 81036Regular price $29.33Sale price $29.33 Regular priceUnit price / per$33.33Sold out -
Velocity Cathedral Port Intake Fuel Rail Hardware Kit
Vendor:Top Street PerformanceSKU: 81708Regular price $17.64Sale price $17.64 Regular priceUnit price / per$20.05Save $2.41 -
LS1 36" Adjustable Stainless Steel Throttle Cable
Vendor:Top Street PerformanceSKU: 81059Regular price $32.58Sale price $32.58 Regular priceUnit price / per$37.03Save $4.45 -
GM LS1 to LS2 Throttle Body Harness Adapter
Vendor:Top Street PerformanceSKU: 81032Regular price $32.58Sale price $32.58 Regular priceUnit price / per$37.03Save $4.45 -
-8 AN Male EFI Fuel Rail Adapter Fitting
Vendor:Top Street PerformanceSKU: 81097Regular price $12.23Sale price $12.23 Regular priceUnit price / per$13.90Save $1.67 -
LS3, L92 Intake Manifold Gaskets
Vendor:Top Street PerformanceSKU: GK014Regular price $13.60Sale price $13.60 Regular priceUnit price / per$15.45Save $1.85 -
LS1, LS2, LS6 Intake Manifold Gaskets
Vendor:Top Street PerformanceSKU: GK013Regular price $13.60Sale price $13.60 Regular priceUnit price / per$15.45Save $1.85 -
Velocity Cathedral Intake Port O-Ring & Hardware Kit
Vendor:Top Street PerformanceSKU: 81701Regular price $19.01Sale price $19.01 Regular priceUnit price / per$21.60Save $2.59 -
105mm 4-Bolt LS Throttle Cable Bracket - Black
Vendor:Top Street PerformanceSKU: 81013BKRegular price $38.04Sale price $38.04 Regular priceUnit price / per$43.23Save $5.19 -
Universal GM LS and LT Swap Cold Air Intake Kit
Vendor:Top Street PerformanceSKU: 81091Regular price $259.71Sale price $259.71 Regular priceUnit price / per$295.13Sold out -
LS Style 58 PSI Fuel Filter Pressure Regulator
Vendor:Top Street PerformanceSKU: 81095Regular price $54.32Sale price $54.32 Regular priceUnit price / per$61.73Save $7.41 -
Velocity Rectangular Port Intake Fuel Rail Hardware Kit
Vendor:Top Street PerformanceSKU: 81709Regular price $17.64Sale price $17.64 Regular priceUnit price / per$20.05Save $2.41 -
5/16" Spring Lock EFI Fuel Rail Adapter Fitting
Vendor:Top Street PerformanceSKU: 81098Regular price $14.94Sale price $14.94 Regular priceUnit price / per$16.98Save $2.04 -
LS EFI 85 GPH Fuel Pump and Filter Regulator Kit
Vendor:Top Street PerformanceSKU: 81095-2KTRegular price $353.08Sale price $353.08 Regular priceUnit price / per$401.23Sold out -
Velocity LS7 Intake Fuel Rail Hardware Kit
Vendor:Top Street PerformanceSKU: 81711Regular price $17.64Sale price $17.64 Regular priceUnit price / per$20.05Save $2.41 -
Velocity LS7 Intake Manifold O-Ring Gaskets and Mounting Bolts
Vendor:Top Street PerformanceSKU: 81707Regular price $19.01Sale price $19.01 Regular priceUnit price / per$21.60Save $2.59 -
Velocity Rectangle Intake Port O-Ring & Hardware Kit
Vendor:Top Street PerformanceSKU: 81703Regular price $19.01Sale price $19.01 Regular priceUnit price / per$21.60Save $2.59 -
LS Style 58 PSI Fuel Filter Pressure Regulator with -6 AN Fittings
Vendor:Top Street PerformanceSKU: 81095-KTRegular price $81.47Sale price $81.47 Regular priceUnit price / per$92.58Sold out -
LS Style Fuel Filter Pressure Regulator Fitting Kit
Vendor:Top Street PerformanceSKU: 81095-3KTRegular price $32.58Sale price $32.58 Regular priceUnit price / per$37.03Save $4.45
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.









