If you’re upgrading an LS-powered build, sheet metal intake manifolds can improve airflow, throttle response, and overall efficiency. This guide highlights five popular options and what to consider when choosing an LS sheet metal intake. Each product focuses on precision construction, enhanced airflow, and compatibility with common LS engines to help you select a kit that fits your vehicle and goals.
Summary of Selected Products
- A-Team Performance Fabricated LS Sheet Metal Intake Manifold — Silver with 102mm Throttle Body Opening
- Motor City Sheet Metal Replacement for Silverado/Sierra LS Engine Covers
- Htostar Racing LS Manifold for Cathedral Port Heads (92mm Inlet)
- PUZZLEDEER LS Cathedral Port 92mm Intake Manifold
- POSENG LS Cathedral Port 92mm Intake Manifold (Two Finishes)
A-Team Performance Fabricated LS Sheet Metal Intake Manifold
The A-Team Performance sheet metal intake manifold is engineered for LS engines, offering compatibility with Gen III/IV small block designs. It features a 102mm throttle body opening to optimize airflow and a two-inch taller profile to boost performance. The complete installation package includes fuel rails, a throttle cable bracket, and an intake manifold gasket for a streamlined setup. The aluminum sheet metal construction aims to improve both aesthetics and efficiency in performance-focused builds.
Key Features: Precision engineered, 102mm throttle body, aluminum sheet metal, height increase for performance, includes fuel rails, throttle bracket, gasket.
Motor City Sheet Metal LS Intake ( Silverado/Sierra Engine Cover Replacement )
This product from Motor City Sheet Metal is designed as a non-OEM replacement option for LS-equipped Silverado and Sierra trucks. It is listed as a compatible/ replacement part for 1999-2006 models, offering a straightforward path to restoring or updating an LS intake setup. The sheet metal approach emphasizes durability and compatibility with common LS engine configurations.
Key Features: Non-OEM replacement part, compatible with 1999-2006 Silverado/Sierra LS engines, sheet metal construction.
Htostar Racing LS Cathedral Port 92mm Intake Manifold
Htostar Racing offers an LS intake manifold designed for cathedral port heads with a 92mm inlet and a taller profile. It supports drive-by-cable throttle bodies and is compatible with a range of LS-based engines, including Corvette, TrailBlazer SS, CTS-V, Pontiac GTO, and more. The manifold provides multiple ports (MAP and vacuum ports) and uses aluminum construction for rigidity and heat resistance.
Key Features: Cathedral port compatibility, 92mm inlet, 210mm height, aluminum construction, multiple vacuum ports, drive-by-cable throttle body compatibility.
PUZZLEDEER LS Cathedral Port 92mm Intake Manifold
PUZZLEDEER’s LS cathedral port intake focuses on distribution efficiency and smooth inner walls to reduce flow resistance. It is designed for LS1, LS2, LS6, and other LS engines within the 4.8L to 6.0L range, featuring a 92mm inlet. The kit is described as compatible with a broad lineup of GM/North American performance vehicles, including Corvette, Firebird, Trans Am, GTO, and CTS-V models. Its smooth inner wall aims to optimize intake capacity and cooling.
Key Features: Cathedral port compatibility, 92mm inlet, smooth inner wall, broad vehicle fitment, TIG-welded aluminum construction.
POSENG LS Cathedral Port 92mm Intake Manifold (Silver or Black)
POSENG offers an LS cathedral port manifold with a 92mm inlet designed for a wide range of LS engines, including 4.8L, 5.3L, 5.7L, and 6.0L. It is compatible with several performance-focused GM platforms such as Corvette, Firebird, Trans Am, Z06, CTS-V, and CTS. The construction emphasizes high strength with a 3mm-thick T6061 aluminum sheet and TIG welding, supporting up to 30 pounds of boost without flexing.
Key Features: Cathedral port compatibility, 92mm inlet, 3mm T6061 aluminum, TIG welded, boost resistant design, multiple model fitment options.
POSENG LS Cathedral Port 92mm Intake Manifold (Silver)
This POSENG offering mirrors the 92mm cathedral port design, available in a silver finish. It targets LS engines such as LS1, LS2, LS6, LS3, and LS7 family variants, and lists compatibility with a broad set of GM performance vehicles from Corvette to CTS-V. The product emphasizes high-strength aluminum construction and TIG welding for rigidity under boost and vacuum loads.
Key Features: 92mm cathedral port manifold, silver finish, compatible LS variants, TIG welded, high-strength aluminum.
Buying Guide: How To Choose The Right LS Sheet Metal Intake
- Engine compatibility: Confirm cathedral port vs rectangular port design and ensure the manifold matches your LS engine family (LS1/LS2/LS6/LS3/LS7, etc.).
- Inlet size and throttle body: A larger inlet (such as 92mm or 102mm) can improve airflow at high RPMs, but verify compatibility with your existing throttle body or plan for a new one.
- Material and construction: Aluminum sheet metal offers strength and heat resistance; TIG welding typically indicates sturdy joints. Consider coatings and finish for corrosion resistance.
- Support components: Some manifolds include fuel rails, gaskets, and brackets; others are bare manifolds requiring additional parts. Check what’s included.
- Fitment and vehicle application: Review the vehicle list and engine family to prevent mismatches with Corvette, CTS-V, GTO, Firebird, TrailBlazer, and similar platforms.
- Ease of installation: A complete installation package can reduce labor time; check for bracket compatibility and required tools.
- Performance goals: Higher-flow manifolds generally benefit high-RPM power and mid-to-top-end torque, whereas street setups may prioritize throttle response and drivability.
- Quality vs price: Compare the design emphasis (catalytic port vs cathedral port), finish, and included hardware to assess value for your project.
- Thermal management: Consider heat soak and thermal insulation practices to maximize intake efficiency in hot climates or under sustained boost.
- Warranty and support: Look for vendor warranties and access to installation guidance or tech support when integrating aftermarket manifolds.
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