FiTech 73309 Nitro-Port LS3 Cast Short Intake and Rails, LS3 Port
FiTech 73309 Nitro-Port LS3 Cast Short Intake and Rails, LS3 Port
FiTech

|

#52173309

FiTech 73309 Nitro-Port LS3 Cast Short Intake and Rails, LS3 Port

  • Purpose-built for LS1 and LS3 combinations, giving modern LS builds a dedicated manifold that supports both street drivability and strip-ready performance
  • Modular layout and compact height make it easier to package in swapped cars, pro-touring builds, and other tight engine compartments without sacrificing airflow
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$715.00

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Product Summary

Aluminum, Natural, 102mm Throttle Body Bore Size

  • Purpose-built for LS1 and LS3 combinations, giving modern LS builds a dedicated manifold that supports both street drivability and strip-ready performance
  • Modular layout and compact height make it easier to package in swapped cars, pro-touring builds, and other tight engine compartments without sacrificing airflow
  • High-flow fuel delivery system with -8 AN rails and -8 ORB connections is ready for boosted, nitrous, or high-horsepower naturally aspirated setups
  • Built-in ports for nitrous or water injection plus consolidated rear vacuum and pressure hookups help reduce clutter and simplify hose routing
  • Backed by FiTech’s fuel injection expertise, the Nitro-Port Cast Manifold is designed as a reliable foundation for serious LS performance builds
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Key Specs

MFG. Part #73309
BrandFiTech
Material TypeAluminum
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FiTech 73309 Details

Nitro-Port LS3 Cast Short Intake and Rails (Manifold, Gaskets, Rails, Hardware), LS3 Port

The Nitro-Port Series Cast Manifold. Engineered for serious street and strip enthusiasts, this new manifold brings power, precision, and versatility to LS1 and LS3 platforms.

Designed with performance and adaptability in mind, the Nitro-Port manifold features a low-profile, modular design ideal for tight engine bays while delivering aggressive performance gains. Short runners support high-RPM power, and -8 AN fuel rails with -8 ORB fittings ensure consistent high-flow fuel delivery under demanding conditions.

For those pushing the limits, integrated nitrous/water injection bungs offer easy expandability, while rear-mounted vacuum and pressure ports keep plumbing clean and accessible. The manifold also features a rear-mounted MAP sensor location for simplified installation.

The Nitro-Port accepts 92mm, 102mm, and drive-by-wire* throttle bodies with a straight throttle body mounting flange, allowing builders more flexibility across multiple LS configurations.

Whether you’re building a high-revving track machine or a show-stopping street car, the FiTech Nitro-Port Cast Manifold delivers the performance, reliability, and engineering excellence customers expect from FiTech Fuel Injection.

*Drive-by-wire throttle bodies coming soon.

  • Purpose-built for LS1 and LS3 combinations, giving modern LS builds a dedicated manifold that supports both street drivability and strip-ready performance
  • Modular layout and compact height make it easier to package in swapped cars, pro-touring builds, and other tight engine compartments without sacrificing airflow
  • High-flow fuel delivery system with -8 AN rails and -8 ORB connections is ready for boosted, nitrous, or high-horsepower naturally aspirated setups
  • Built-in ports for nitrous or water injection plus consolidated rear vacuum and pressure hookups help reduce clutter and simplify hose routing
  • Backed by FiTech’s fuel injection expertise, the Nitro-Port Cast Manifold is designed as a reliable foundation for serious LS performance builds

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
CA Prop 65
CARB warning

FiTech 73309 Specifications

KEY SPECS
MFG. Part #73309
BrandFiTech
Material TypeAluminum
GENERAL
ColorNatural
EGRNo
Cylinder Head ConfigurationRectangular Port LS3/L76/L92/L99
Throttle Body Bore Size102mm
Intake Section IncludedComplete
Throttle Body IncludedNo
Injectors IncludedNo
Runners IncludedYes
Runners RemovableNo
Supplemental Bosses Cast-InYes
Supplemental Bosses MachinedNo
Supplemental Boss Quantity8
Sold in QuantityEach
NotesIncludes short style intake manifold, gaskets, and mounting hardware.
GTIN Code810128305433
Fuel Injection StyleMulti-port
Multi-Port Fuel Rails IncludedYes

Questions & Answers

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Fitment

  • GM LM4

  • GM LS6

  • GM LS2

  • GM LSA

  • GM LM7

  • GM LQ9

  • 6.2 Chevy LS V8

  • GM L9H

  • GM L94

  • GM LM7

  • GM LQ9

  • 6.2 Chevy LS V8

  • GM L9H

  • GM L94

  • GM LM7

  • GM LQ9

  • 6.2 Chevy LS V8

  • GM L9H

  • GM L76

  • GM LC9

  • GM LMG

  • GM LY5

  • GM LY5

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • GM LS1

  • GM LS3

  • GM LS1

  • GM LS1

  • GM LS6

  • GM LS2

  • GM LS3

  • GM LS4

  • GM LS4

  • 4.8 Chevy LS V8

  • GM LM7

  • 4.8 Chevy LS V8

  • GM L20

  • GM LM7

  • GM LY2

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ9

  • GM LQ4

  • GM L98

  • GM LM7

  • GM LQ4

  • GM L98

  • GM LQ9

  • GM L98

  • GM LQ4

  • GM L98

  • GM LQ4

  • GM LQ4

  • GM L98

  • GM L98

  • GM LQ4

  • GM LQ4

  • GM L98

  • GM LZ1

  • GM LS3

  • GM LM4

  • GM L77

  • GM LMG

  • GM LY5

  • GM LM7

  • GM L59

  • GM LM7

  • GM LC9

  • GM LMG

  • GM LY5

  • GM LC9

  • GM LMG

  • GM LMG

  • GM LY5

  • GM LQ4

  • GM L96

  • GM LMG

  • GM LY5

  • 4.8 Chevy LS V8

  • GM L59

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LMG

  • GM LY5

  • 6.2 Chevy LS V8

  • GM L9H

  • GM LC9

  • GM LMG

  • GM LZ1

  • GM L9H

  • GM LC9

  • GM LMG

  • GM LZ1

  • GM LC9

  • GM LMG

  • GM LZ1

  • GM LMG

  • GM LY5

  • GM LH6

  • GM LS2

  • GM LM4

  • GM LM4

  • GM LM4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM L94

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM L94

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM L94

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM L94

  • GM LQ4

  • GM L20

  • GM L9H

  • GM LC9

  • GM LMG

  • GM LZ1

  • GM L33

  • GM L59

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM L96

  • GM L96

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L20

  • GM LM7

  • GM LY2

  • 4.8 Chevy LS V8

  • GM L20

  • GM L94

  • GM LM7

  • GM LY2

  • GM LZ1

  • GM L94

  • GM LC9

  • GM LMG

  • GM LZ1

  • GM LM7

  • GM L59

  • GM LM7

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM L96

  • GM LQ4

  • 6.2 Chevy LS V8

  • GM LH8

  • GM LH9

  • GM LH8

  • GM LH9

  • GM LS1

  • GM LS3

  • GM LS1

  • GM LS2

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