The best 318 LA intake manifolds provide improved airflow, better throttle response, and reliable performance for classic Mopar engines. This guide highlights five solid options, who they’re best for, and why they stand out. It’s ideal for enthusiasts restoring or upgrading 318, 340, 360 V8 engines across 1967–2003 Mopar vehicles. The top picks cover street, strip, and easy-install scenarios, with a focus on Dual Plane Air Gap designs for optimal mid-range torque. Use the quick comparison table below to narrow choices before reading detailed sections.
| Product | Best For | Key Benefit | Notes |
|---|---|---|---|
| Flynsu 318 Intake Manifold | Classic Mopar with 5.2–5.9L V8s | Air Gap dual-plane design for heat dissipation | Wide engine compatibility; check truck/van fitment |
| A-Premium Engine Dual Plane 318 | Broad LA/Magnum range | Extensive fitment notes for many Chrysler engines | Best for varied older Mopar builds |
| JGhyperX 7576 Dual Plane (Silver) | Performance-minded street cars | Durable cast aluminum; non-EGR design | May require minor head-hole adjustments |
| SHLPDFM Aluminum Dual Plane | Budget-friendly rebuilds | Dual bolt pattern; aluminum with good durability | Simple install; verify bolt pattern compatibility |
| Edelbrock 2176 Performer | Performance enthusiasts | Low-rise dual-plane with torque boost | Premium brand with known airflow characteristics |
Flynsu 318 Intake Manifold Dual Plane
Best for classic Chrysler LA 318/340/360 engines including 5.2L and 5.9L variants. The Flynsu dual plane Air Gap design supports a broad rpm range and is compatible with a wide model mix from 1967–2003 Mopar vehicles. It is suitable for street cruisers and restomod builds that prioritize steady torque in mid range. Caution: verify compatibility with early 8° offset bolt holes on some LA heads to ensure a clean install.
A-Premium Engine Dual Plane 318 8Cyl Intake Manifold
Best for owners who want broad fitment across both LA and Magnum engines (5.2L, 5.6L, 5.9L). This dual-plane design is designed to suit a large list of Mopar vehicles, including Ram and Grand Cherokee variants. It’s an economical choice for builders who value compatibility and straightforward installation. Caution: some fitment notes require minor head or bolt-hole adjustments for certain early LA heads.
JGhyperX 7576 Dual Plane (Silver)
Best for performance-oriented street builds with a focus on durability. The JGhyperX dual plane air gap intake uses cast aluminum for good heat management and corrosion resistance. It is designed for 1967–2003 LA Magnum small-blocks (318/340/360). The design aims for easy bolt-on installation and reliable airflow, with a note that early LA heads may require minor modifications to bolt holes. Choose this for a balance of strength and performance.
Haytalras 7576 55026 Air-Gap Dual Plane
Best for street-to-strip enthusiasts seeking a versatile dual-plane intake for 1967–2003 Mopar 318/340/360 engines. It supports a wide rpm range (1,500–6,500) and emphasizes an air-gap design to optimize mid-range torque. Caution: ensure part numbers align with your engine family (55026, 7576, DM-3812) and verify mounting clearances on your specific chassis.
Edelbrock 2176 Performer Aluminum Intake Manifold
Best for performance-focused builders who want a reputable upgrade with proven airflow characteristics. The Edelbrock Performer features a dual-plane low-rise design that increases torque from off-idle to about 5,500 RPM. It is a strong option for street/strip Mopar builds seeking reliability and extractable mid-range power. Caution: Edelbrock may have different mounting heights; confirm compatibility with existing carburetor and throttle linkage setups.
Buying Guide: Key Considerations for 318 LA Manifolds
- RPM range and driving goals: Choose a dual-plane Air Gap design for broad torque and mid-range power, suitable for daily driving and weekend fun. If you chase peak top-end power, evaluate models with optimized runner lengths and plenum volume.
- Engine compatibility: Confirm fitment with 318, 340, and 360 V8 engines across LA and Magnum families. Pay attention to bolt-hole alignment, head type, and distributor hold-down provisions.
- Airflow and heat management: Air Gap designs typically offer improved heat dissipation, reducing vapor lock and improving cold-start performance in warm climates.
- Installation considerations: Check bolt pattern compatibility, carburetor coupling (4-barrel square bore), and any required modifications for early LA heads or offset bolt holes.
- Brand reliability and parts availability: Established brands like Edelbrock and well-known dual-plane designs often provide better long-term support and gaskets, seals, and compatible accessories.
FAQ
- What is a dual-plane intake manifold?
Answer: A dual-plane manifold splits the intake runners into two planes to improve low-to-mid RPM torque, which is ideal for daily driving and street performance. - Will these manifolds fit a 1967–1981 Mopar engine?
Answer: Most listed options target 1967–2003 Chrysler LA/Magnum small-block V8s; always verify exact bolt patterns and head geometry for your specific year and model. - Do these manifolds require carburetor upgrades?
Answer: They are designed for 4-barrel square-bore carburetors; check compatibility with your current carburetor and linkages. - Are aluminum manifolds durable for daily driving?
Answer: Yes, aluminum dual-plane manifolds offer light weight and good heat management, suitable for street-driven Mopars with proper gaskets and torquing. - Is an EGR-free design important?
Answer: For non-EGR engines, a non-EGR manifold helps maintain consistent airflow and reduces potential emissions-system interference. - Which manifold is best for my budget?
Answer: SHLPDFM provides a cost-effective option, while Edelbrock offers premium airflow characteristics for higher-performance builds.