Best 3D Printed LS Intake Manifolds for Performance
For American muscle enthusiasts seeking cold, precise air delivery to LS-based engines, 3D printed and aluminum cathedral-port style intake manifolds offer a balance of performance, weight, and customization. This guide highlights select models designed to fit LS1/LS2/LS6 and related cathedral-port configurations, with attention to compatibility, materials, and port arrangements. Read on to compare options and identify which manifold best suits your build and driving goals.
Summary of Selected Products
| Product | Brand | Inlet Size | Compatibility |
|---|---|---|---|
| Htostar Racing For LS Intake Manifold (92mm) | Htostar Racing | 92 mm | LS cathedral port heads; LS1/LS2/LS6 with cable drive; 4.8L–5.3L |
| Htostar Racing For LS Intake Manifold (102mm) | Htostar Racing | 102 mm | LS cathedral port; cable drive; LS1/LS2/LS6; 4-bolt intake |
| FAST LSXr 102mm Intake Manifold (Black) | FAST | 102 mm | LS1/LS2/LS6; improved runners; modular design |
| JGhyperX 92mm Hi-Ram EFI Manifold | JGhyperX | 92 mm | Chevy GM LS3/L92/L99; EFI Hi-Ram; 1×92 mm throttle body |
| PUZZLEDEER 102mm Black Cathedral Port Manifold | PUZZLEDEER | 102 mm | Chevy LS cathedral port; Corvette/Firebird/CTS V entourage |
Htostar Racing 92mm LS Intake Manifold — Cathedral Port
This manifold is designed for LS-based engines with cathedral port heads and a cable-driven throttle body. It features a 92 mm inlet, a tall 210 mm height, and 1/8″ thick aluminum construction. The kit includes vacuum ports (1/4NPT & 1/8NPT) with plugs and a rear MAP port for 10 MAP. Suitable for LS1/LS2/LS6 applications and various GM variants. A practical upgrade for enthusiasts seeking improved intake flow at moderate boost levels.
Htostar Racing 102mm LS Intake Manifold — Cathedral Port
This version expands to a 102 mm inlet and a 210 mm tall profile, built from 1/8″ thick aluminum. It is compatible with LS cathedral-port heads and is intended for cable-drive LS configurations. Features include vacuum ports (1/4NPT & 1/8NPT) with plugs and a rear MAP Port for 10 MAP. Notable for those pursuing higher flow without switching to drive-by-wire systems.
FAST LSXr 102mm Intake Manifold
FAST’s LSXr 102 mm manifold features longer runners and a larger air inlet than stock, delivering increased horsepower while preserving low-RPM torque. It has a sleek black finish for aesthetics and a modular, removable runner design that simplifies disassembly and porting. It is suited for LS1/LS2/LS6 engines seeking improved airflow with compatibility considerations for various tune setups.
JGhyperX 92mm Hi-Ram EFI Manifold
This Hi-Ram EFI intake manifold is designed for GM LS3/L92/L99 platforms with a 92 mm throttle body. It features a long plenum top with fuel rails machined for -8 AN fittings and a front/rear height of about 12.32 inches. It targets higher RPM performance and is appropriate for boosted or naturally aspirated builds that benefit from a larger intake runner and dedicated EFI plumbing.
PUZZLEDEER 102mm Cathedral Port Manifold
PUZZLEDEER’s 102 mm cathedral-port intake manifold is built for Chevy LS cathedral-port heads and common LS engine families (LS1/LS2/LS6, 4.8L–6.0L). It uses 1/8″ thick T6061 aluminum with a rear MAP port and vacuum provisions. The design emphasizes smooth inner walls to reduce gas resistance and improve flow, supporting improved air distribution across cylinders in compatible configurations.
GSTP LS Cathedral Port 92mm Manifold
GSTP’s cathedral-port manifold is compatible with LS1/LS2/LS6 engines (4.8L–6.0L). It features a 92 mm inlet, 210 mm tall height, and 1/8″ thick aluminum construction with multiple vacuum ports and a rear MAP port. The kit includes compatibility with LS-based EFI engines and a practical approach to upgrading air delivery for performance-focused builds.
POSENG 92MM Cathedral Port LS Intake
POSENG’s 92 mm cathedral-port manifold is designed for LS-based engines with cathedral ports (6.0L, 5.7L, 5.3L, 4.8L variants). It targets a broad list of LS families (LR4/L33/L59, etc.) and offers a sturdy 3 mm aluminum construction with TIG welding. It includes a robust compatibility list covering Corvette, Firebird, CTS V-Series, GTO, TrailBlazer SS, and related platforms, providing a versatile upgrade path for modern LS builds.
Haytalras 92mm Hi-Ram EFI Manifold
The Haytalras 92 mm Hi-Ram EFI manifold targets LS3/L76/L92/L99 platforms with a 92 mm throttle body and 3,500–8,000 RPM operational range. It uses aluminum construction and emphasizes compatibility with 6.0L and 6.2L GM LS engines. The kit is designed for enthusiasts who want a robust, high-RPM capable intake for EFI configurations and porting potential.
Buying Guide: Key Considerations When Choosing an LS Cathedral Port Intake Manifold
- Engine compatibility: Confirm cathedral-port head design matches your LS family (LS1/LS2/LS6, etc.) and whether drive-by-wire or cable-drive throttle bodies are used.
- Inlet size and runner design: 92 mm vs 102 mm inlets influence top-end power and low-end torque. Longer runners can improve low-RPM torque; shorter runners favor high-RPM horsepower.
- Material and construction: Aluminum manifolds offer light weight and good heat management. Thickness (1/8″ vs 3 mm) and welding quality affect durability and heat soak resistance.
- Vacuum ports and MAP: Availability of vacuum ports (1/4NPT, 1/8NPT) and rear MAP port compatibility with your boost or sensor setup is crucial for tuning and sensor placement.
- Port alignment and compatibility: Ensure intake ports align with your cathedral-port heads and that any required fuel rails or brackets are included or easily sourced.
- Finish and aesthetics: Black finishes and modular designs can simplify maintenance and porting work while matching engine bay aesthetics.
- Installation considerations: Some manifolds require specific spacer, bolt, or fuel rail configurations. Check for required hardware or additional components before purchase.
- Porting potential: If future tuning or boost is planned, consider manifolds with porting-ready runners and accessible internal walls to reduce flow restrictions.
- Warranty and support: Look for vendor guidance on compatibility with your year/model and the availability of after-sale support for fitment issues.
Comparative Considerations Across The Selected Manifolds
- Flow vs. torque: Larger 102 mm inlets generally favor peak horsepower, while 92 mm variants may provide stronger low-end torque for street usage.
- Drive-by-Drive vs Cable-Drive: Some models specify cable-drive setups; ensure your throttle body and ECU wiring are compatible to avoid installation conflicts.
- Port manufacturing: Aluminum sheet construction with TIG welding tends to be robust for long-duration use and boost conditions, but overall quality varies by brand.
- Fitment range: While many listings claim broad Corvette/CTS/V-Series compatibility, verify fitment with your exact model, year, and intake-to-head port spacing to prevent clearance issues.
- Maintenance and service: Modular runner designs (as found in some FAST products) can ease disassembly and port work but may require careful reassembly to seal properly.