JEGS 555-513000 Dual Plane Intake Manifold Features:

• Fits 1955-1986 Small Block Chevy 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400 V8 Engines
• Improve engine performance and horsepower with this higher flowing intake manifold compared to a stock cast iron intake
• Mid-rise dual-plane design provides optimum performance and fuel distribution
• Designed to fit with popular aftermarket square bore 4150 carburetors including Edelbrock, Holley, Quick Fuel, Proform, and more
• Fabricated from cast aluminum for weight savings and improved performance
• Designed for 23-degree heads with standard port location
• Port exit dimensions: 1.170 in. W x 1.900 in. H

JEGS 513000 Dual Plane Intake Manifold Notes:

• Recommended Intake Gasket For Apps without Heat cross overuse JEGS p/n 555-210002 Sold Separately
• Recommended Intake Gasket For Apps with Heat cross overuse JEGS p/n 555-210004 Sold Separately
• Intake gasket port matching is recommended for optimum performance
• Estimated runner length - Shortest: 4 in.
• Estimated runner length - Longest: 7 in.
• Manifold height: (A) 4.290 in., (B) 5.310 in.
• Click here to determine the carburetor pad height.
• Also Fits 1987-Up stock aluminum heads (does not fit 1987-Up cast iron or Chevrolet Bow Tie heads)
• Accepts late-model choke, water neck, AC, alternator, and HEI
• No provision for divorced or heated choke
• Stock/stamped steel valve covers may require 3/16" (or thicker) valve cover gaskets. We recommend 555-21100, 555-210075, or 555-210070 for adequate runner clearance.

Additional Recommended Items to help you with your installation (Sold Separately)

• Carburetor Fuel Inlet Lines & Fittings
• Carburetor Spacers
• Fuel Filters
• Carburetor Linkage, Choke Kits & Components
• JEGS Bandit Series EFI Throttle Body System

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

FAQ

What's better single or dual plane intake manifold?

• Single plane: Improved top-end power
• Dual plane: Better low-end torque and drivability

How much HP does an upgraded intake manifold add?

• Varies by model, but expect a notable power increase
• Performance gains depend on other engine modifications

How do I choose an intake manifold?

• Consider your engine's RPM range and intended use
• Match the manifold to your specific vehicle and engine modifications