FiTech 73300 Nitro-Port Cast, LS3 500 HP Loaded/ Short LS3 Port
FiTech 73300 Nitro-Port Cast, LS3 500 HP Loaded/ Short LS3 Port
FiTech

|

#52173300

FiTech 73300 Nitro-Port Cast, LS3 500 HP Loaded/ Short LS3 Port

  • Cast Nitro-Port Series manifold is engineered for serious LS1 and LS3 street and strip enthusiasts who demand power, precision, and versatility
  • Low-profile, modular intake design fits tight engine bays while still delivering aggressive performance gains and strong airflow
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Rating:

500 HP

750 HP1000 HP

$1,200.00

/kit

Factory Shipped


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Product Summary

Multi-port Injection Style, Injectors Included

  • Cast Nitro-Port Series manifold is engineered for serious LS1 and LS3 street and strip enthusiasts who demand power, precision, and versatility
  • Low-profile, modular intake design fits tight engine bays while still delivering aggressive performance gains and strong airflow
  • Short runners and -8 AN fuel rails with -8 ORB fittings support high-RPM power with consistent high-flow fuel delivery under demanding conditions
  • Integrated nitrous and water injection bungs plus rear-mounted vacuum, pressure, and MAP sensor ports keep plumbing clean, accessible, and easy to expand
  • Straight throttle body mounting flange accepts 92mm, 102mm, and upcoming drive-by-wire throttle bodies, giving builders flexible options across multiple LS configurations
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Key Specs

MFG. Part #73300
BrandFiTech
Injection StyleMulti-port
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FiTech 73300 Details

Nitro-Port Cast, LS3 500 HP Loaded/ Short LS3 Port Intake/Cable Driven 92mm Throttle Body

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.

  • Cast Nitro-Port Series manifold is engineered for serious LS1 and LS3 street and strip enthusiasts who demand power, precision, and versatility
  • Low-profile, modular intake design fits tight engine bays while still delivering aggressive performance gains and strong airflow
  • Short runners and -8 AN fuel rails with -8 ORB fittings support high-RPM power with consistent high-flow fuel delivery under demanding conditions
  • Integrated nitrous and water injection bungs plus rear-mounted vacuum, pressure, and MAP sensor ports keep plumbing clean, accessible, and easy to expand
  • Straight throttle body mounting flange accepts 92mm, 102mm, and upcoming drive-by-wire throttle bodies, giving builders flexible options across multiple LS configurations

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 73300 Specifications

KEY SPECS
MFG. Part #73300
BrandFiTech
Injection StyleMulti-port
GENERAL
Injectors IncludedYes
Intake Section IncludedComplete
EGRNo
Throttle Body IncludedYes
ColorNatural
Bore Size92 mm
Material TypeAluminum
NotesRectangular Port LS3/L76/L92/L99
GTIN Code810128305341
Sold in QuantityKit
Multi-Port Fuel Rails IncludedYes

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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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