If you are searching for an LS intake manifold kit, first decide whether your engine needs a carbureted manifold or an EFI setup. The JGhyperX and Dokili options are carbureted; GSTP and Htostar Racing are cathedral-port EFI manifolds, while POSENG includes a 102mm throttle body and fuel rails. These picks suit different LS build plans, so confirm port style, throttle operation, clearance, and included components before ordering.
| Product | Best For | Key Detail |
|---|---|---|
| JGhyperX 300-130 | Carbureted street builds | Dual-plane design, 1,500–6,500 RPM |
| Dokili 300-132 | Carbureted LS swaps | Cathedral-port application; listing has conflicting design details |
| GSTP 92mm | Cathedral-port EFI builds | 92mm inlet and fuel-rail fittings |
| Htostar Racing 102mm | Cable-throttle EFI builds | 102mm inlet; not for drive-by-wire |
| POSENG 102mm kit | EFI builds needing included hardware | Throttle body and fuel rails; adapter note applies |
JGhyperX 300-130 Carbureted Manifold
The JGhyperX 300-130 is a dual-plane carbureted intake for LS1, LS2, and LS6 cathedral-port engines. Its listed applications also include Gen III and Gen IV 4.8L, 5.3L, and 6.0L V8 configurations. The stated operating range is 1,500–6,500 RPM, and the listed manifold height is 5.60 inches.
Best for: A street-oriented carbureted LS conversion where a dual-plane design and the stated lower operating range fit the build plan. It is described as a complete carbureted intake section. Limitation: Confirm engine port style and available hood clearance; the listing gives a specific manifold height.
Dokili 300-132 Carbureted Manifold
The Dokili 300-132 is listed for GM LS Gen III and IV engines with LS1-, LS2-, or LS6-style cathedral-port heads. The application details include 4.8L, 5.3L, 5.7L, and 6.0L V8 configurations. Its description identifies part numbers 300-132 and HLY-300132 and gives an operating range of 2,500–7,000 RPM.
Best for: A carbureted LS swap targeting a higher stated operating range. Important caution: The product name says “Dual Plane,” but the feature text calls it a “single plane” manifold and describes an open-plenum layout. Verify the design and part details with the seller before choosing it.
GSTP 92mm Cathedral-Port EFI Manifold
This GSTP manifold is described for LS1, LS2, LS6, and other listed 4.8L, 5.3L, 5.7L, and 6.0L cathedral-port applications. It has a 92mm inlet, a stated height of 210mm, T6061 aluminum construction, vacuum ports, a rear MAP port, and 8AN fuel-rail fittings. Its fuel-rail bracket is listed as compatible with original LS1, LS6, or LS2 injectors without additional spacers or modifications.
Best for: A cathedral-port EFI build that needs a 92mm inlet and specified fuel-rail fittings. Limitation: Check hood clearance because the listing describes the manifold as taller, and verify the throttle-body and fuel-system requirements for the complete setup.
Htostar Racing 102mm Cable-Throttle Manifold
Htostar Racing lists this 102mm-inlet manifold for LS-based engines with cathedral-port heads, including LS1, LS2, LS6, and selected 4.8L and 5.3L applications. It is made from 1/8-inch T6061 aluminum, has a listed height of 210mm, and includes vacuum ports and a rear MAP port. The application notes specify a four-bolt intake and cable-drive throttle body.
Best for: Builders using a cable-throttle arrangement who want a 102mm inlet. Limitation: The listing explicitly says it is not for drive-by-wire, and the taller height makes clearance checks important.
POSENG 102mm Manifold With Throttle Body
The POSENG fabricated aluminum intake is listed for several LS-based Gen III and IV engine families, including specified 4.8L, 5.3L, 6.0L, and 6.2L applications. The described kit includes a 102mm throttle body and fuel rails. This makes it a different package from manifold-only options, although buyers should verify exactly what is included for their intended configuration.
Best for: An EFI project seeking a manifold package with a throttle body and fuel rails listed. Limitation: The listing says the manifold needs a “Supercharger Adapters Rectangle” adapter. Confirm the required adapter and its fitment before purchase.
Buying Guide: How to Choose an LS Intake Manifold
Do you need a carbureted or EFI manifold?
Choose a carbureted manifold for a carburetor conversion, such as the JGhyperX or Dokili. Choose an EFI-oriented option when your setup uses fuel injectors and rails, such as GSTP, Htostar Racing, or POSENG. Do not assume that manifold-only options include a throttle body, fuel rails, injectors, or other conversion parts; check the product details.
Which LS port style and engine application should you verify?
These listings focus on cathedral-port LS applications, but their stated engine coverage varies. Match the manifold to the cylinder-head port shape and engine configuration rather than relying on displacement alone. Also check the vehicle’s available height and the throttle arrangement. Htostar specifically requires cable drive, while its listing excludes drive-by-wire.
How should you compare openings and package contents?
Compare inlet size with the rest of the induction system: the supplied choices list 92mm or 102mm openings on several EFI manifolds. A larger stated inlet is not, by itself, proof that a manifold suits a particular engine. Review included fuel rails, fittings, brackets, ports, and any required adapter. Confirm unclear or conflicting specifications—especially the Dokili plane-design description—before buying.
Frequently Asked Questions
What does cathedral-port mean for an LS manifold?
It refers to the cylinder-head port style specified by these manifold listings. Confirm that the heads on your engine match the manifold’s stated port application before purchase.
Can I use an EFI manifold for a carbureted LS build?
These products are listed for different setups. The JGhyperX and Dokili are identified as carbureted, while GSTP, Htostar Racing, and POSENG are EFI-oriented. Choose according to your fuel and throttle system.
Is the Htostar Racing manifold suitable for drive-by-wire?
No. Its listing says it is for cable-drive throttle bodies and not for drive-by-wire.
Does the POSENG kit include a supercharger adapter?
The listing says a rectangular supercharger adapter is needed and should be added with the manifold. Verify the adapter’s inclusion and fitment before ordering.
What should I do about conflicting product specifications?
Ask the seller to confirm the exact part number, design, and engine fitment. This is especially important when a product title and feature description disagree.