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Top Street Performance

Chrysler Small Block Carbureted Dual Plane Air Gap Aluminum Intake Manifold - Polished

Chrysler Small Block Carbureted Dual Plane Air Gap Aluminum Intake Manifold - Polished

SKU: SKU: 85025

Regular price $415.56
Sale price $415.56 Regular price $472.23
Shipping calculated at checkout.

In stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.

Product Details

Features

  • Chrysler small block dual plane intake is built for carbureted systems with 4150 Square Bore carburetor flange compatibility.
  • Operating range: 1,500-6,500 RPM. Deck height: Standard. Designed to match the camshaft, cylinder heads, and vehicle use.
  • Aluminum construction with polished finish supports durability, sealing, and clean engine-bay presentation.
  • Front/center/rear height: 4.900 in., 5.350 in., 5.800 in. Verify hood clearance, distributor clearance, gasket alignment, and accessory spacing.

Description

Designed for Chrysler V8 applications, this intake manifold is built to support balanced airflow distribution, dependable throttle response, and strong mid-range performance in properly matched engine combinations.

Airflow & Performance Design
The intake runner and plenum design help support balanced airflow delivery between cylinders while maintaining stable throttle response and dependable street-driven performance.

Construction & Engine-Bay Fitment
The manifold construction to support long-term durability, heat management, and a clean installed appearance in demanding engine-bay environments.

Installation Considerations
Proper installation requires confirming cylinder head compatibility, intake gasket alignment, carburetor or throttle-body configuration, distributor clearance, and hood clearance before final assembly.

System Matching
Verify fuel system compatibility, throttle linkage setup, vacuum routing, sensor provisions, and accessory clearance before installation. This intake manifold is intended for properly matched engine combinations.

Specs

Basic Operating RPM Range1,500-6,500 RPM
Carburetor Flange Style4150 Square Bore
Carburetor Quantity1
Center Maximum Height5.350 in.
CNC PortedNo
ColorPolished
Deck HeightStandard
EGRNo
Front Maximum Height4.900 in.
Fuel System TypeCarbureted
Gasket Or Seal IncludedNo
Grade TypePerformance
Intake Port ShapeRectangle
MaterialAluminum
Rear Maximum Height5.800 in.
Single Or Dual Plane TypeDual Plane

Engine Fitment

COMPATIBLE WITH
CHRYSLER SMALL BLOCK V8
• 5.2 L / 318 in3
• 5.6 L / 340 in3
• 5.9 L / 360 in3

NOTE: Designed to accommodate "LA" and "Magnum" series engines.
Requires the use of 1975 or earlier water neck.

COMMON VEHICLE APPLICATIONS:
Dodge Charger
Dodge Challenger
Plymouth Road Runner
Plymouth Barracuda
Chrysler New Yorker

Q&A

What engines is this intake manifold compatible with?
This intake manifold is designed for Chrysler Small Block V8 applications, including 318, 340, and 360 combinations, and it is intended to work with both LA and Magnum series engines.


Will this intake fit a 318, 340, or 360 Mopar?
Yes, this intake is designed for Chrysler Small Block V8 combinations including 318, 340, and 360 applications.


What type of carburetor does this intake support?
This intake uses a 4150 square bore carburetor flange and is built for single 4-barrel carbureted applications.


What RPM range is this intake designed for?
This dual plane intake is designed to perform from 1,500-6,500 RPM, making it a strong choice for performance street and street/strip use.


What is the benefit of an air gap intake design?
The air gap design creates an open space under the plenum to reduce heat transfer from the engine, helping keep the air/fuel charge cooler for improved power and torque.


How does this compare to a standard dual-plane intake?
Compared to a standard dual-plane intake, this air gap design offers improved mid-range and top-end performance while still maintaining good throttle response and street manners.


What type of intake manifold is this?
This is a dual plane aluminum intake manifold with an air gap design, built to improve low-end and mid-range performance while maintaining good drivability.


Will this intake clear a stock hood?
It features a relatively low-profile design to help with hood clearance, with a front height of 4.900 in., center height of 5.350 in., rear height of 5.800 in..


What material is this intake made from?
It is cast from lightweight aluminum, which helps reduce weight and improve heat dissipation.


Is this a direct bolt-on intake manifold?
In most cases, this intake is designed as a direct-fit manifold for compatible Chrysler Small Block V8 applications, though proper gaskets, carburetor setup, and supporting components are still recommended during installation.


Are there any installation notes I should know about?
Yes, this intake is designed for LA and Magnum series engines and requires the use of a 1975 or earlier water neck.


Will this intake improve throttle response on my Chrysler Small Block?
Yes, the manifold design helps improve airflow and mixture distribution, which can translate to better throttle response and more consistent power delivery.


Is this a good upgrade from a stock intake?
Yes, this intake is a solid upgrade for compatible Chrysler Small Block V8 builds that need improved airflow, better drivability, and stronger performance across the usable RPM range.


Does the polished finish affect performance?
No, the polished finish is cosmetic and does not change performance—it gives the intake a bright, show-quality appearance.


How do I maintain the polished finish?
Regular cleaning and occasional polishing will help maintain the shine and reduce surface oxidation over time.

Emissions Notice

This Top Street Performance (TSP) product is designed for racing and off-road competition use only. It is not legal for use on public roads or emissions-controlled vehicles and does not comply with federal, state, or local emissions regulations. The buyer assumes all responsibility for legal use and installation.

What is a Emissions-Controlled Vehicle?
"An emissions-controlled vehicle is any vehicle equipped with a factory-installed emissions control system designed to reduce air pollution. These systems include catalytic converters, oxygen sensors, EGR (Exhaust Gas Recirculation) valves, and diesel particulate filters (DPF). Most vehicles manufactured after 1975 are considered emissions-controlled and must comply with federal and state emissions laws when used on public roads."