The best LS truck intake manifold depends on port shape, throttle-body size, drive type, and available engine-bay clearance. The five options below are listed for cathedral-port LS applications, but they differ in inlet size and design. Choose the Htostar Racing 92mm model for a cable-throttle setup with a smaller inlet, the 102mm version for a larger inlet, the YIUIY for a fabricated low-profile design, or the JGhyperX Hi-Ram for a 92mm EFI setup. Verify your engine and installation requirements before ordering.
| Product | Best suited for | Key detail |
|---|---|---|
| Htostar Racing 92mm | Cable-throttle applications | 92mm inlet |
| Htostar Racing 102mm | Cable-throttle applications needing a larger inlet | 102mm inlet |
| PUZZLEDEER 92mm | Listed cathedral-port vehicle applications | Smooth inner-wall design |
| JGhyperX Hi-Ram | EFI builds using a Hi-Ram design | 92mm throttle body; -8 AN fuel-rail fittings |
| YIUIY Low Profile 102mm | Buyers seeking a fabricated low-profile manifold | TIG-welded T6061 aluminum |
Htostar Racing LS Manifold, 92mm
This Htostar Racing manifold is listed for LS-based engines with cathedral-port heads, including 4.8L, 5.3L, LS1, LS2, and LS6 applications. Its 92mm inlet is smaller than the brand’s 102mm option, making it the better match when the planned throttle-body size is 92mm.
The manifold is described as 210mm tall and made from 1/8-inch-thick aluminum. It includes plugged 1/4NPT and 1/8NPT vacuum ports and a rear M12 x 1.25 MAP port. The listed vehicle applications include several Corvette, Firebird, GTO, CTS V-Series, and other models.
Best for: Buyers seeking a 92mm inlet and a cable-throttle-compatible option. Caution: Confirm the throttle-body drive type and available clearance; the listing specifies a taller 210mm design and cable-drive use.
Htostar Racing LS Manifold, 102mm
This version is also listed for cathedral-port LS engines, including 4.8L, 5.3L, LS1, LS2, and LS6 applications. Its 102mm inlet distinguishes it from the 92mm Htostar option. Choose this model if your planned throttle body and intake setup call for the larger opening.
Listed details include a 210mm height, 1/8-inch-thick T6061 aluminum, plugged 1/4NPT and 1/8NPT vacuum ports, and a rear M12 x 1.25 MAP port. The listing specifies a four-bolt cable-drive intake and says it is not for drive-by-wire systems.
Best for: Cathedral-port applications requiring a 102mm inlet and cable throttle. Caution: Avoid this if your setup is drive-by-wire, and confirm clearance for the taller manifold before purchase.
PUZZLEDEER Cathedral-Port Manifold
PUZZLEDEER lists this silver manifold for cathedral-port LS1, LS2, and LS6 engines, as well as 4.8L, 5.3L, 5.7L, and 6.0L applications. Its stated inlet size is 92mm. The product description also identifies a smooth inner-wall design, which it says is intended to reduce airflow resistance.
The listed vehicle applications include select Corvette, Corvette Z06, Pontiac Firebird and Trans Am, Cadillac CTS V-Series, Chevrolet SSR and TrailBlazer SS, Pontiac GTO, and Saab 9-7X Aero models.
Best for: Buyers seeking a 92mm cathedral-port option with a listed set of vehicle applications. Caution: The provided product details do not specify throttle-drive type or manifold height, so verify those requirements with the seller before ordering.
JGhyperX 300-122 LS Hi-Ram
This EFI Hi-Ram manifold is listed for GM LS, LS1, LS2, and LS6 5.7L and 6.0L V8 engines with cathedral-port heads. The listing specifies a 92mm throttle body and identifies the part as 300-122 or 300122. Fuel rails are machined for -8 AN O-ring male fittings.
Best for: Builders specifically seeking an LS Hi-Ram EFI manifold with a 92mm throttle-body specification. Caution: Cathedral-port heads are required according to the listing, and buyers should check fuel-rail fitting requirements before selecting it.
YIUIY Low-Profile 102mm Manifold
YIUIY describes this as a low-profile, 102mm intake manifold for LS1, LS2, and LS6 cathedral-port heads. It is made from 1/8-inch T6061 sheet aluminum and uses TIG-welded fabrication. The listed applications include select Chevy, GMC, Pontiac, Cadillac, and Saab vehicles.
Best for: Buyers prioritizing a low-profile fabricated design and a 102mm inlet. Caution: The supplied details do not state manifold height or throttle-drive compatibility, so confirm both for your installation.
Buying Guide: How To Choose An LS Intake Manifold
Which port shape does your engine use?
Start by confirming the cylinder-head port shape. All five products here are presented for cathedral-port applications, but an engine’s displacement or vehicle model alone does not confirm that the heads match. Check the engine and cylinder-head specifications before purchasing.
Should you choose a 92mm or 102mm inlet?
Match the inlet to the throttle body and the rest of the intake setup. The Htostar options are available in both sizes, while the PUZZLEDEER and JGhyperX listings specify 92mm and the YIUIY listing specifies 102mm. A larger inlet is not automatically the right choice if other components are sized differently.
What should cable-throttle buyers check?
The Htostar 102mm listing specifically calls for cable drive and says it is not for drive-by-wire. Do not assume that another product supports a particular throttle system unless its listing confirms it. Also compare manifold height with the available space in the engine bay.
Are the fuel and vacuum connections important?
Yes. Check connection requirements before ordering. The Htostar models list vacuum ports and a MAP port. The JGhyperX listing specifies fuel rails machined for -8 AN O-ring male fittings. Confirm that these details suit the planned fuel and sensor setup.
Frequently Asked Questions
Are these manifolds listed for cathedral-port LS heads?
Yes. Each product description identifies cathedral-port LS applications, though fitment still depends on the specific engine, throttle setup, and installation requirements.
Which option has a 102mm inlet?
The Htostar Racing 102mm model and the YIUIY low-profile model are listed with 102mm inlets.
Which product is specifically identified as a Hi-Ram?
The JGhyperX 300-122 is identified as an LS Hi-Ram EFI intake manifold with a 92mm throttle-body specification.
Can I use the Htostar 102mm manifold with drive-by-wire?
The listing says it is for cable drive only and not for drive-by-wire systems.
What should I verify before ordering?
Confirm cathedral-port compatibility, inlet and throttle-body size, throttle-drive type, manifold clearance, and any required fuel, vacuum, or MAP connections.