JEGS 555-513097 GM LS Mid-Rise Dual Plane Intake Manifold Features

• Designed for GM LS1, LS2 & LS6 applications using a 4-BBL carburetor or EFI throttle body
• Accepts a 4150/4160 square bore flange with up to a 1.750 in. diameter throttle bore
• Mid-Rise dual-plane design provides optimum performance and fuel distribution
• Port Dimensions: 1 in. W x 2.720 in. H
• Manifold Height:
  • Front Height (A): 5.070 in. from front lifter valley cover to carb mounting flange
  • Rear Height (B): 6.150 in. from rear lifter valley cover to carb mounting flange
  • Carb Pad Height = 5.610 in.
  • Click here to determine carburetor pad height.
• Intake port matching is recommended for optimum performance
• Carburetor Flange Angle: 0 degree
• Vacuum Port Thread: 3/8 in. NPT
• MAP Sensor Port Thread: 1/8 in. NPT

JEGS 555-513097 GM LS Mid-Rise Dual Plane Intake Manifold Includes

• (6) Mounting Bolts: M6-1 x 88.91 UHL Zinc-plated with 10mm hex head
• (4) Mounting Bolts: M6-1 x 64.65 UHL Zinc-plated with 10mm hex head
• (10) Flat Washers: 6mm Zinc-plated
• (1) Pipe Plug: 3/8 in. NPT with 8mm hex/allen head (used to block the manifold vacuum port if necessary)
• (1) Pipe Plug: 1/8 in. NPT with 5mm hex/allen head (used to block the MAP sensor port if necessary)
• (8) Viton O-ring cylinder head mounting flange gaskets

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

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

FAQ

Can I put a carburetor on my LS engine?

• Yes the JEGS Mid-Rise Dual Plane Intake Manifold for GM LS1/LS2/LS6 with Cathedral Port Heads will accept a carburetor with either a 4150 or 4160 flange providing superior performance and compatibility.

Is a dual plane intake manifold better for the street?

• Yes, a dual plane intake manifold, such as the JEGS Mid-Rise Dual Plane Intake, is well-suited for street applications. The design features separate plenums for the primary and secondary intake runners, improving low-end torque and throttle response. This configuration enhances street drivability, making it ideal for daily driving and stop-and-go traffic situations.

Will a mid-rise intake make power through the entire RPM range of my engine?

• The JEGS Mid-Rise Dual Plane Intake Manifold is engineered to provide a broad power band, delivering increased torque and horsepower across the entire RPM range. Its mid-rise design optimizes airflow velocity for improved performance at both low and high RPMs, making it a versatile choice for a wide range of driving conditions and applications.

Will my engine make more power with an aftermarket intake?

• Yes, upgrading to an aftermarket intake manifold like the JEGS Mid-Rise Dual Plane Intake can significantly improve engine performance. By optimizing airflow and fuel delivery, aftermarket intake manifolds enhance combustion efficiency, resulting in increased horsepower and torque. Additionally, the specific design for Cathedral Port Heads ensures optimal fitment and compatibility for GM LS1/LS2/LS6 engines, maximizing power potential.

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.

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