10 Best Racing Intake Manifolds for LS Engines in 2026

Choosing the right intake can make a noticeable difference in how an LS engine responds at idle, midrange, and wide-open throttle. The best setup depends on your head style, throttle body size, and how the car will be driven.

This roundup focuses on practical fitment and performance differences so you can narrow down the right racing intake manifold for LS engine builds without guessing.

Best 10 Racing Intake Manifold for Ls Engine Picks for 2026

Pro Street Power – FAST LSXr 102mm Intake Manifold

If you’re shopping for a racing intake manifold for ls engine builds, the FAST LSXr 102mm is a strong choice for LS1, LS2, and LS6 applications where you want more airflow without giving up low-RPM torque. Its longer runners and larger air inlet are aimed at adding power while staying street-friendly, and the modular runner design also makes it easier to service or port later.

Best For: LS owners who want a performance-focused manifold with strong low-end torque retention and a clean black finish.

Pros:

• Longer runners and a larger air inlet are designed to add horsepower while keeping low-RPM torque.
• Modular, removable runner design supports easier disassembly and porting.
• Advanced polymer construction helps keep weight down and runs cooler than aluminum.
• CARB-approved for emissions-conscious builds.

Cons:

• Built for LS1, LS2, and LS6 fitment, so it is not the broadest option for every LS-based engine.
• The polymer body may not appeal to buyers specifically looking for an aluminum manifold.

Overall, this FAST manifold makes sense if you want a proven LS intake that emphasizes airflow, torque retention, and serviceability in a premium package.

Low-Profile Swap Fit – LS3 Rectangle Port 102mm Low-Profile Intake

For a racing intake manifold for ls engine builds with LS3-style rectangle port heads, this low-profile 102mm option is designed to fit tighter engine bays while still supporting a performance EFI setup. It pairs with 102mm four-bolt throttle bodies and includes the major hardware needed for the install, making it a practical choice when clearance matters.

Best For: Rectangle-port LS3-style builds that need a low-profile manifold and included install hardware.

Pros:

• Low-profile 165mm height helps when engine bay clearance is limited.
• Works with 102mm four-bolt throttle bodies and LS3-style MAP sensors.
• Includes fuel rail kit, fittings, brackets, seals, bolts, and gasket.
• Vacuum ports and MAP sensor port add installation flexibility.

Cons:

• Only fits LS3 and other rectangle-port LS-based engines, not direct replacement for all LS setups.
• Buyers may need to check engine bay clearance and possibly change the pump bracket.

This is a good pick if your priority is a compact rectangle-port intake that comes with a fairly complete accessory package for a custom LS build.

Budget Boost Ready – POSENG 92mm Cathedral-Port LS Intake Kit

If you need a racing intake manifold for ls engine setups with cathedral-port heads, this POSENG unit is aimed at Gen III/IV LS-based builds that use cable throttle bodies. It ships as a complete kit with the 92mm throttle body, fuel rails, and crossover line included, so it’s a straightforward option for buyers assembling a full intake package.

Best For: Cathedral-port LS1/LS2/LS6-style builds that want a kit with the throttle body and fuel system parts included.

Pros:

• Compatible with LS-based cathedral-port engines including 4.8, 5.3, 5.7, and 6.0 applications.
• 3mm T6061 aluminum construction and TIG welding are built for strength.
• Includes 92mm throttle body, TPS, gaskets, hardware, fuel rails, and crossover line.
• Rated to hold up to 30 pounds, with no flex under boost or vacuum bore.

Cons:

• Not for drive-by-wire applications, so fitment is limited to cable-drive setups.
• No instructions are included, so professional installation is recommended.

As a bundled intake kit, this model is appealing if you want a cathedral-port LS manifold with more of the supporting parts already in the box.

Tall Airflow Upgrade – GSTP 102mm Tall Cathedral-Port LS Intake

When you’re comparing a racing intake manifold for ls engine builds, this GSTP 102mm option stands out for cathedral-port LS1, LS2, LS6, and other Gen III/IV EFI engines that can benefit from a taller aluminum design. Its 210mm height, 102mm inlet, and 8AN fuel rail fittings make it a strong pick for builders who want more clearance-friendly performance hardware than the original plastic version.

Best For: Cathedral-port LS builds that want a taller aluminum manifold with upgraded fuel rail support.

Pros:

• 102mm inlet and taller 210mm profile suit performance-oriented LS builds.
• Upgraded fuel rail bracket works with LS1, LS2, and LS6 original injectors without extra spacers or modifications.
• Includes vacuum port fittings, MAP port, fuel rail kit, and installation hardware.
• Aluminum construction offers better durability and heat resistance than the original plastic version.

Cons:

• The taller design may not suit tight engine bay clearance situations.
• Fitment is limited to cathedral-port LS-based EFI engines.

This manifold is a sensible upgrade if you want a taller, more durable LS intake with fuel rail compatibility already considered in the design.

Budget-Ready Aluminum – LS Cathedral Port Intake Manifold 92mm Silver

If you’re shopping for a racing intake manifold for ls engine builds with cathedral port heads, this HTRACING-style manifold is aimed at common Gen III/IV LS swaps that need a 92mm opening and included fuel system hardware. It targets LS1, LS2, LS6, and 4.8L/5.3L/5.7L/6.0L applications while keeping the package focused on the parts most installers want in one box.

Best For: Builders who want a cathedral-port aluminum intake with fuel rails, crossover line, and a 92mm throttle body opening.

Pros:

• Fits a wide range of cathedral-port LS engines, including LS1, LS2, LS6, and several 4.8L-6.0L variants.
• Made from 3mm T6061 sheet aluminum with TIG welding for a rigid, boost- and vacuum-resistant design.
• Includes gaskets, hardware, fuel rails, and a fuel crossover line.
• Designed to reduce airflow resistance and improve throttle response.

Cons:

• 92mm throttle body, TPS, and injectors are not included.
• Only suitable for LS engines with cathedral port heads.
• Fitment is limited to listed vehicles and engine combinations.

This is a practical choice for builders who want an aluminum manifold package with key install parts included, but it still requires you to match the throttle body and other missing components to your setup.

High-Flow Cable Setup – LS Cathedral Port Intake 102mm

This racing intake manifold for ls engine builds is geared toward cathedral-port LS applications that use a drive-by-cable throttle body and want a larger 102mm inlet. It lists compatibility with LS1, LS2, LS6, and multiple 4.8L/5.3L truck and car platforms, while the taller aluminum body and integrated sensor ports make it a more specialized swap option.

Best For: LS builders who need a 102mm cable-throttle manifold with factory-style IAC and TPS installation.

Pros:

• 102mm/4.02″ inlet suits high-flow cable-throttle applications.
• Includes installed IAC and TPS, plus vacuum ports and a rear MAP port.
• Made from 1/8″ thick T6061 aluminum with a 210mm taller design.
• Rated at 1218 CFM and listed with high working and burst pressure figures.

Cons:

• Drive-by-wire applications are not supported.
• LS2 fitment may require different spacers.
• Only works with cathedral-port LS engines.

For builders committed to a cable-throttle setup, this manifold gives you a large inlet and the onboard provisions needed for a cleaner installation, but you should verify injector spacing and throttle control compatibility first.

Upgraded Swap Package – LS Cathedral Port Intake 92mm Black

For a racing intake manifold for ls engine projects that want a taller aluminum replacement with more complete hardware, this 92mm black unit is built around cathedral-port Gen III/IV EFI engines. It supports LS1, LS2, LS6, and 4.8L/5.3L/5.7L/6.0L combinations and includes an upgraded fuel rail bracket intended to work with original LS1, LS6, or LS2 injectors without extra spacers or modifications.

Best For: LS swaps that want a 92mm aluminum intake with upgraded fuel rail support and broader injector compatibility.

Pros:

• Compatible with LS-based cathedral-port engines from 4.8L through 6.0L.
• Upgraded fuel rail bracket is designed for LS1, LS6, or LS2 original injectors without extra spacers.
• Includes intake manifold, throttle body gasket, fuel rail kit, vacuum fittings, brackets, seals, and bolts.
• 3-inch taller aluminum construction adds durability and heat resistance over plastic.

Cons:

• Only fits cathedral-port LS setups.
• 92mm inlet may not suit every throttle body choice.
• Buyer still needs to verify all included parts against the image and application.

This is the most complete-sounding package of the three, especially if you want an aluminum intake with fuel rail hardware already sorted for common LS injector setups.

Cathedral-Port Street/Strip Build – 102mm LS Intake Manifold

If you’re shopping for a racing intake manifold for ls engine builds with cathedral port heads, this 102mm version is aimed at LS1, LS2, and LS6 applications where airflow and throttle-body compatibility matter. It uses 3mm T6061 sheet aluminum and includes the manifold, rear MAP sensor port, gaskets, hardware, fuel rails, and fuel crossover line, making it a solid foundation for a performance swap or upgrade.

Best For: Cathedral-port LS owners who want a 102mm setup and a complete manifold package for a performance street or strip build.

Pros:

• Built for LS cathedral port heads across LS1, LS2, and LS6 applications
• Designed to work well with a 102mm throttle body
• Includes fuel rails, crossover line, gaskets, hardware, and rear MAP sensor port
• Made from 3mm T6061 sheet aluminum for stable construction

Cons:

• 102mm throttle body is not included
• TPS and injectors are not included
• 92mm throttle body fitment is noted as potentially loose

This is a practical option if you want a large-inlet intake with the parts needed to get started, but you should verify cathedral-port fitment and throttle-body setup before ordering.

Budget Cable-Throttle Swap – 92mm LS Intake Manifold

For a racing intake manifold for ls engine setups that use cathedral port heads and a drive-by-cable throttle body, this 92mm manifold is built around LS1, LS2, and LS6-style applications. It features a taller 210mm design, 1/8-inch thick aluminum construction, vacuum ports, and a rear MAP port, so it covers the basic needs of a performance intake swap without extra guesswork.

Best For: LS cathedral-port owners who need a cable-throttle intake with 92mm inlet sizing and built-in sensor and vacuum provisions.

Pros:

• Compatible with LS cathedral port heads and multiple LS-based engines
• Drive-by-cable throttle body setup with IAC and TPS installed
• Includes vacuum ports and rear MAP port for 10 MAP
• Rated at 1218 CFM with aluminum construction

Cons:

• 92mm size may not be the right match for every build
• LS2 applications may require different spacers
• Throttle body and fuel system fitment still need to be confirmed for the specific swap

This manifold makes sense when you want a cable-throttle cathedral-port option with the key ports already accounted for. It is best treated as a swap-friendly performance part, not a universal bolt-on.

Boost-Ready Cathedral-Port Choice – 92mm LS Intake Manifold

If you’re comparing a racing intake manifold for ls engine builds and want a 92mm cathedral-port option, this model is aimed at LS1, LS2, LS6, and other compatible LS-based engines. It is made from 3mm T6061 sheet aluminum, TIG welded, and described as holding up to 30 lbs, with the goal of reducing airflow resistance and improving throttle response.

Best For: LS cathedral-port builds where stronger aluminum construction and a 92mm inlet are the priorities.

Pros:

• Fits a wide range of LS cathedral-port engine and vehicle applications
• 3mm T6061 aluminum construction with TIG welds
• Designed to reduce airflow resistance and improve distribution to all 8 cylinders
• Includes fuel rails, crossover line, gaskets, hardware, and rear MAP sensor port

Cons:

• 92mm throttle body, TPS, and injectors are not included
• Different spacers may be required for LS2 use
• Fitment is limited to cathedral-port heads, so it is not a universal LS intake

This version is a strong pick if you want a cathedral-port intake with a performance-focused aluminum build and the common installation pieces included. Just make sure your throttle-body and injector plan matches the parts list.

How We Picked the Best Racing Intake Manifold for Ls Engine

We prioritized fitment accuracy, port style compatibility, throttle body diameter, hood clearance, and whether each manifold makes sense for a street, strip, or swap application. Since the right Racing Intake Manifold for Ls Engine varies by build, we looked for options that cover the most common LS cathedral-port and rectangle-port combinations.

Quick Comparison

In general, 92mm manifolds tend to favor broader street-friendly drivability, while 102mm setups are better suited to higher airflow and more aggressive combinations. Low-profile designs can help with hood clearance, but they may trade away some top-end potential. Drive-by-cable and drive-by-wire compatibility also matters, especially for swaps and older chassis.

Key Buying Factors for a Racing Intake Manifold for Ls Engine

Port Style

Match the manifold to your heads first. Cathedral-port LS1/LS2/LS6-style heads need a cathedral-port manifold, while LS3-style rectangle-port heads need a rectangle-port manifold. This is the most important fitment check.

Throttle Body Size

A 92mm throttle body is a common all-around choice, while 102mm options are aimed at larger airflow demands. Bigger is not always better if the rest of the combo cannot use the added capacity.

Intended Use

Street-driven cars usually benefit from smoother response and easier packaging. Drag and high-RPM builds may favor larger plenums and larger throttle bores. If you are choosing a Racing Intake Manifold for Ls Engine use, match the manifold to your cam, heads, and RPM range rather than chasing peak numbers alone.

Hood Clearance and Accessories

Check the overall height, fuel rail setup, and whether the manifold works with your accessories, wiring, and throttle linkage. A great-performing intake is not helpful if it creates fitment headaches.

Who Should Buy Which Racing Intake Manifold for Ls Engine?

Choose a cathedral-port manifold if you are running most LS1, LS2, LS6, 4.8L, 5.3L, 5.7L, or many 6.0L cathedral-port combinations. Choose a rectangle-port manifold if your heads are LS3-style. If you want the simplest street swap, look for a package that matches your throttle actuation style and offers the clearance you need. For higher-rpm or more modified builds, lean toward the larger 102mm options; for balanced daily use, a 92mm setup is often the smarter pick.