Best Ls Cathedral Port Intake for LS Builds

#1 · Best Overall

1. GSTP 92mm Intake

• Package Dimensions: 21.4 x 15.5 x 11 in
• Weight: 17.51 lb

Best for: EFI builds needing fuel-rail flexibility.

Why it ranks #1: Its listing specifies cathedral-port LS fitment, a 92mm inlet, vacuum and MAP ports, 8AN rail fittings, and a bracket for original LS injectors.

An upgraded fuel-rail bracket specified for LS1, LS6, and LS2 original injectors gives the GSTP 92mm manifold a practical advantage for builders retaining those injectors. The listing pairs that feature with cathedral-port Gen III/IV EFI compatibility, a 210mm height, and multiple ports for vacuum and MAP connections.

The 92mm inlet and 210mm height provide defined dimensions for matching the throttle-body opening and checking engine-bay clearance. GSTP also lists 1/4NPT and 1/8NPT vacuum ports with plugs, a rear M12 x 1.25 MAP port, and 8AN fuel-rail fittings, helping buyers plan connection routing. Its upgraded bracket accommodates original LS1, LS6, or LS2 injectors without additional spacers or modifications, according to the supplied feature description.

Skip it if you need a 102mm inlet; Htostar Racing's cable-drive manifold lists that size, though it excludes drive-by-wire.

This GSTP manifold suits cathedral-port EFI builders who value its listed ports and injector-bracket arrangement. Match the 92mm inlet to your throttle-body plan, and account for its stated 210mm height when checking clearance.

Listed on Amazon as: For LS LS1 LS2 LS6 Intake Manifold with Cathedral Port Compatible with Chevy 4.8 5.3 5.7 6.0 L (92MM Silver)

#2 · Injector Fitment Detail

2. POSENG 92mm Intake

• Package Dimensions: 23.23 x 13.78 x 9.92 in
• Weight: 17.11 lb

Best for: LS1 and LS6 injector reuse.

Why it ranks #2: It lists numerous cathedral-port LS engines and models, while its notes clarify that non-LS1/LS6 injectors may need bracket changes or spacers.

Explicit injector guidance is the useful differentiator on this POSENG 92mm cathedral-port manifold: LS1 and LS6 injectors are listed, while other injectors may need bracket changes or spacers. Its fitment spans several LS engine sizes and numerous named Chevrolet, Cadillac, Pontiac, and Saab applications.

The listing covers cathedral-port LS-based 4.8L, 5.3L, 5.7L, and 6.0L engines, including a long set of engine codes and vehicle applications. That breadth helps identify potential donor and project combinations, but injector details matter during assembly: LS1/LS6 injectors are specified, while other types may require extra bracket holes or spacers. The manifold is described as 3mm-thick, high-strength construction, though the supplied excerpt does not give an inlet-height measurement.

Skip it if you need an injector bracket stated to accept original LS2 injectors without changes; the GSTP manifold explicitly lists that support.

This POSENG option fits buyers whose cathedral-port LS application matches the listed engines and vehicles, especially those using LS1 or LS6 injectors. Plan for possible bracket work or spacers with other injector types.

Listed on Amazon as: Intake Manifold for LS Cathedral Port Heads for LS1 LS2 LS6 LS Engines Compatible with Chevy 4.8 5.3 5.7 6.0 HTRACING (Black 92MM)

#3 · Cable-Throttle Option

3. Htostar 102mm Intake

• Package Dimensions: 24.5 x 16 x 10.7 in
• Weight: 20.2 lb

Best for: Cable-throttle EFI swaps.

Why it ranks #3: The 102mm inlet suits a larger-throttle-body setup, and the listing clearly limits this manifold to four-bolt cable drive, not drive-by-wire.

A 102mm inlet and explicit cable-drive-only setup distinguish this Htostar Racing cathedral-port manifold, enabling a clear choice for compatible LS applications using a cable throttle body. The listing covers LS1, LS2, and LS6 engines and names several Chevrolet, Cadillac, Pontiac, and Saab applications.

The product specifies cathedral-port LS-based engines and a four-bolt intake for cable drive, while explicitly excluding drive-by-wire. That distinction helps buyers screen throttle-control compatibility before planning a swap. Its 102mm/4.02-inch inlet gives a defined throttle-body size to match, and the listed 210mm height is relevant when checking engine-bay clearance. Named vehicle applications include Corvette, TrailBlazer SS, CTS V-series, Firebird, GTO, and Saab 9-7X Aero.

Skip it if you run drive-by-wire; the GSTP 92mm cathedral-port manifold lists EFI compatibility without this cable-only restriction.

This suits buyers matching a cathedral-port LS build to a cable-driven throttle body and 102mm inlet. Check the listed 210mm height against available clearance, and rule it out for drive-by-wire setups.

Listed on Amazon as: For LS Intake Manifold Compatible with LS1 LS2 LS6 of cathedral port heads with Drive by Cable Throttle Body Compatible with Chevy Cadillac Pontiac Aluminum (102mm)

#4 · Low-Profile Design

4. YIUIY Low-Profile Intake

• Package Dimensions: 21.5 x 15.25 x 11 in
• Weight: 18.41 lb

Best for: Fabricated low-profile EFI builds.

Why it ranks #4: This 92mm EFI manifold is described as low profile and uses 1/8-inch T6061 sheet aluminum with TIG-welded fabrication.

A low-profile 92mm cathedral-port format makes the YIUIY manifold relevant to EFI builders who need to consider intake height alongside throttle-body size. Its listed LS1, LS2, and LS6 fitment spans named Chevrolet, GMC, Pontiac, and other LS applications, while its sheet-aluminum fabrication sets it apart from cast-style options.

YIUIY specifies 1/8-inch-thick T6061 sheet aluminum and TIG-welded fabrication, giving buyers concrete construction details when selecting a fabricated EFI intake. The 92mm sizing offers a defined inlet dimension for component matching, and the low-profile description flags clearance as a key selection factor. Its application list covers cathedral-port LS1, LS2, and LS6 heads, but the supplied details do not state a manifold height, so assess the actual installation requirements separately.

Skip it if you need a stated height before planning clearance; the GSTP 92mm manifold specifies a 210mm height.

Consider this YIUIY for an LS1, LS2, or LS6 cathedral-port EFI build where a low-profile fabricated intake and 92mm inlet suit the plan. Its listing lacks a height figure, so clearance planning needs additional information.

Listed on Amazon as: For LS Intake Manifold Low Profile Cathedral Port 92mm Compatible with Chevy GMC Pontiac LS1 LS2 LS6 Sheet Metal Fabricated EFI (Black)

#5

5. Melincars 92mm Intake

• Package Dimensions: 21.2 x 15.6 x 11 in
• Weight: 17 lb

Best for: Smooth-wall 92mm LS intake swaps.

Why it ranks #5: The listed 92mm upper intake targets cathedral-port LS1, LS2, and LS6 engines and states compatibility with 4.8L through 6.0L applications.

A smooth inner-wall design is the Melincars manifold’s defining feature, with the listing linking it to reduced flow resistance and improved intake capacity. Its 92mm cathedral-port upper-intake format is specified for LS1, LS2, and LS6 applications and 4.8L through 6.0L engines.

The listed smooth inner walls are intended to reduce gas-flow resistance, connecting the construction detail to the manifold’s stated airflow aim. A 92mm inlet gives buyers a concrete dimension for throttle-body matching, while cathedral-port compatibility covers the named LS heads and engine sizes. The product is described as an upper intake that distributes air to cylinders. The supplied details do not provide a height or specific throttle-control compatibility, so account for those unknowns in planning.

Skip it if you need a specified manifold height before checking clearance; GSTP lists a 210mm height for its 92mm EFI manifold.

Consider Melincars for a cathedral-port LS project where a smooth-wall design and 92mm inlet align with your components. The available details do not specify height or throttle-control type, so confirm those installation requirements separately.

Listed on Amazon as: LS1 LS2 LS6 LS Intake Manifold 92MM Cathedral Port Upper Intake Manifold Assembly for Chevy Corvette Camaro GTO 4.8 5.3 5.7 6.0 LS Engine Black

#6

6. PUZZLEDEER 102mm Intake

• Weight: 17.31 lb

Best for: 102mm cathedral-port engine swaps.

Why it ranks #6: Its 102mm black intake is listed for cathedral-port LS applications, though the supplied details provide less installation guidance than higher-ranked options.

A 102mm inlet makes the PUZZLEDEER manifold a defined option for cathedral-port LS builders matching a larger throttle-body opening. Its listing names 4.8L, 5.3L, 5.7L, and 6.0L engines and several Corvette, Firebird, Trans Am, and other vehicle applications, helping narrow the initial fitment check.

PUZZLEDEER describes this as an upper intake manifold that distributes incoming air to the cylinders and lists fitment across several LS engine sizes. The 102mm sizing in the title gives buyers a concrete inlet dimension to compare with their throttle body. Its named vehicle applications can help screen a project, but the supplied feature excerpt does not provide manifold height, throttle-control type, or detailed injector-bracket specifications, so those installation points remain important to resolve.

Skip it if you require explicit cable-only compatibility; Htostar Racing lists a 102mm cable-drive intake and clearly excludes drive-by-wire.

Choose this PUZZLEDEER option when its 102mm inlet and listed LS engine applications align with your build. The supplied details leave throttle-control and injector-bracket provisions unspecified, so resolve those points before planning installation.

Listed on Amazon as: LS LS1 LS2 LS3 LS6 Intake Manifold Compatible for Chevy 4.8L 5.3L 5.7L 6.0L Intake Manifold for LS Cathedral Port Heads 102mm Black

#7 · Truck-Style Upgrade

7. Michigan Motorsports NNBS Intake

Best for: Cathedral-port LS truck upgrades.

Why it ranks #7: This manifold is specifically modeled on GM #12638038 and TBSS-style intake setups for 1999–2014 4.8L, 5.3L, and 6.0L cathedral-port trucks.

The Michigan Motorsports NNBS manifold targets 1999–2014 LS truck applications and is modeled on the TBSS-style intake, giving truck builders a specific upgrade direction. Its listed 4.8L, 5.3L, and 6.0L cathedral-port coverage includes a range of truck engine codes, helping narrow application screening.

The NNBS design is described as using updated runners and providing improved airflow over early LS truck intake manifolds, which explains its stated role as a truck intake upgrade. Its compatibility list names LM7, LR4, LQ4, LQ9, LC9, LMG, LMF, LH6, and L33 engines, alongside 4.8L, 5.3L, and 6.0L sizes. The TBSS-style reference helps buyers identify the intended setup, while the supplied details do not state inlet diameter or height.

Skip it if you need a specified 92mm inlet and 210mm height; the GSTP manifold lists both dimensions for clearance planning.

This Michigan Motorsports manifold suits truck and SUV builders seeking the listed NNBS/TBSS-style cathedral-port direction. Check that your engine code is covered, and seek inlet and height details if those dimensions determine your installation.

Listed on Amazon as: Michigan Motorsports NNBS LS Truck Intake Manifold | Like GM #12638038 | Fits 1999-2014 4.8L 5.3L 6.0L Cathedral Port LS Engines | TBSS Style Intake Upgrade

#8

8. BTR Trinity Intake

Best for: High-rpm cathedral-port LS builds.

Why it ranks #8: The short-runner, three-piece design is listed for cathedral-port heads and a 6,000–8,500 RPM operating range, favoring a specialized build.

BTR’s short-runner, three-piece Trinity design and stated 6,000–8,500 rpm optimum operating range point toward high-rpm cathedral-port LS builds. The intake includes a new-style FRK-02 fuel-rail kit, while its listed engine coverage includes LS1, LS2, LS6, LQ4, LQ9, L33, and LH6 applications.

The short runners and stated optimum range indicate an intake intended for operation at elevated engine speeds rather than a broad low-rpm focus. Its three-piece construction is described as allowing application flexibility, while the included FRK-02 fuel-rail kit addresses a required component for this manifold. Compatibility is listed for 1997–2013 cathedral-port LS-based heads and several engine families. Check that the intended operating range and rail-kit requirement suit the complete build.

Skip it if you prioritize a broad low-rpm carbureted range; JGhyperX lists 1,500–6,500 rpm for its dual-plane intake.

This BTR Trinity suits cathedral-port LS builders targeting the stated high-rpm range and needing the included FRK-02 rail kit. Its short-runner focus is a poor match when low-rpm operation is the primary priority.

Listed on Amazon as: BTR Brian Tooley Racing Trinity Cathedral Port LS1 Intake Manifold w/Fuel Rail Kit, Natural Finish LS1 LS2 LS6 LQ4 LQ9 L33

#9

9. JGhyperX 300-130 Intake

• Weight: 15.22 lb

Best for: Carbureted street LS builds.

Why it ranks #9: This silver carbureted dual-plane manifold fits cathedral-port LS applications and lists a 1,500–6,500 RPM range, but it is not an EFI intake.

A dual-plane layout paired with a 1,500–6,500 rpm basic operating range gives the JGhyperX 300-130 a broad stated window for carbureted LS setups. Its cathedral-port fitment covers several Gen III and Gen IV engine sizes, making it a candidate for builds seeking a carb intake rather than an EFI replacement.

This complete aluminum manifold is specified for LS1, LS2, and LS6 cathedral-port heads, plus 4.8L, 5.3L, and 6.0L applications. The dual-plane configuration and 1,500–6,500 rpm range suit buyers whose operating plans span more than a narrow high-rpm band. At 5.60 inches tall, it also calls for checking available engine-bay clearance. It is carbureted and has no EGR, so plan the installation around those requirements.

Skip it if you need an EFI-style intake or EGR provision; the GSTP 92mm manifold lists EFI compatibility and vacuum ports.

Choose this JGhyperX for a carbureted cathedral-port LS build that can use its dual-plane layout and stated rpm range. Confirm the 5.60-inch height works with your installation, and account for its carbureted, no-EGR configuration.

Listed on Amazon as: 300-130 LS Cathedral Port Carb Intake Manifold for LS1 V8 Silver

#10

10. Dokili 300-132 Intake

• Weight: 12.12 lb

Best for: Carbureted LS replacement builds.

Why it ranks #10: It is a carbureted cathedral-port LS intake, but its description conflicts by calling the manifold both dual-plane and single-plane.

The Dokili 300-132 is identified as a carbureted dual-plane cathedral-port manifold, making it a focused candidate for LS builds moving to carburetion. Its stated fitment includes LS1-, LS2-, and LS6-style heads across 4.8L, 5.3L, 5.7L, and 6.0L configurations, with several vehicle applications named.

Dokili lists replacement part numbers 300-132 and HLY-300132, useful identifiers when cross-referencing a carbureted intake plan. Its application details cover Gen III and IV LS V8 engines with cathedral-port heads and name CTS, Camaro, and Corvette configurations. The listing calls it a dual-plane intake, though another supplied sentence describes it as single plane; verify the intended configuration before relying on that layout. Its carbureted designation separates it from EFI manifold choices.

Skip it if you need an unambiguous single-plane specification; JGhyperX states a dual-plane layout and gives a 1,500–6,500 rpm range.

This Dokili intake may suit a carbureted LS project within its listed engine applications, but the conflicting plane descriptions make confirmation essential. Treat it as a fitment candidate only after resolving that configuration detail.

Listed on Amazon as: 300-132 LS Dual Plane Intake Manifold Cathedral Port Carbureted