Mopar Plymouth Poly 318 Aluminum Intake Manifold, Dual Plane - Satin

Upgrade your classic Chrysler Poly 318 engine with the Top Street Performance Dual Plane Aluminum Intake Manifold, engineered specifically for the Chrysler A-Series Poly V8. This Poly 318 intake manifold features a dual-plane runner design that promotes balanced airflow and fuel distribution for improved throttle response, strong low- and mid-range torque, and dependable street drivability across the idle-to-5,500 RPM operating range.

Designed as a direct performance upgrade for Dodge, Plymouth, and Chrysler vehicles powered by the Poly V8, this manifold supports carbureted 4-barrel applications and is built to work with the unique cylinder head and port geometry of the Chrysler A-Series Poly engine. Whether you're restoring a Plymouth Fury, building a Dodge Coronet street cruiser, or assembling a classic Mopar hot rod with a Poly 318, this manifold delivers the airflow and drivability your combination needs.

The lightweight aluminum construction reduces overall engine weight compared to heavier factory cast-iron manifolds while dissipating heat more efficiently to help keep intake charge temperatures in check. The satin aluminum finish delivers a clean, show-quality appearance that complements both period-correct restorations and custom engine bays.

This is a Poly 318-specific intake manifold — it will not fit Chrysler LA-series small block engines or Magnum engines, which use a different cylinder head and intake bolt pattern. If you're building or restoring a true Chrysler A-Series Poly V8, this dual plane intake manifold provides the airflow efficiency, low-end torque, and street manners that classic Mopar Poly builds deserve.

 

Dual-Plane Intake Technology
The dual-plane runner design divides the intake plenum into two separate planes, each feeding alternating cylinders to help maintain strong air velocity throughout the operating range. This configuration promotes balanced air-fuel distribution across all eight cylinders, supporting the consistent low- and mid-range torque delivery that street-driven Poly 318 builds require. By maintaining airflow velocity from idle through 5,500 RPM, the dual-plane layout delivers the responsive throttle feel and smooth drivability that makes this manifold well-suited for daily drivers, cruisers, and classic car restorations.

Performance Benefits
Designed for the Chrysler A-Series Poly 318 V8, this manifold supports improved airflow efficiency compared to restrictive factory cast-iron intakes. The dual-plane layout optimizes power delivery in the idle-to-5,500 RPM range where most street-driven Poly 318 engines spend their time, making it an excellent choice for drivers seeking stronger low-end grunt, crisper throttle response, and improved overall drivability without sacrificing street manners.

COMPATIBLE WITH
CHRYSLER "A" POLY V8
• 5.2 L / 318 in3

COMMON VEHICLE APPLICATIONS
Dodge Coronet
Dodge Custom Royal
Dodge Royal
Plymouth Belvedere
Plymouth Fury
Plymouth Savoy
Chrysler Windsor
Chrysler Saratoga

NOTES
Designed for Poly 318 engines only
Will NOT fit Chrysler LA-series small block engines
Will NOT fit Magnum engines
Designed for 4-barrel carburetor applications

SPECIFICATIONS
Basic Operating Range: Idle to 5,500 RPM
Carburetor Quantity: 1
Engine Block Style: Standard deck height
Intake Style: Dual Plane
Manifold Finish: Satin
Manifold Height: 5.130 In.
Manifold Material: Aluminum