Mid-Rise Single Plane Intake Manifold for GM LS1/LS2/LS6 with Cathedral Port Heads [Satin]

Name: Mid-Rise Single Plane Intake Manifold for GM LS1/LS2/LS6 with Cathedral Port Heads [Satin]
Brand: JEGS
SKU: 555-513099
Price: 292.99 USD
Availability: InStock

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Carbureted LS Intake Manifolds

Intake Manifold

GM LS1, LS2 & LS6

Mid-Rise Single Plane

Accepts 4-BBL Carburetor with 4150/4160 Square Bore Mounting Flange

2500-7000 RPM

Intake Ports Designed to fit Cathedral Port Heads

Aluminum

Satin Finish

JEGS 555-513099 GM LS Mid-Rise Single 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)
(8) Viton O-ring cylinder head mounting flange gaskets

JEGS 555-513099 GM LS Mid-Rise Single Plane Intake Manifold Features:

Designed for GM LS1, LS2 & LS3 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
The mid-rise single-plane design provides optimum performance and fuel distribution for racing applications
Port Dimensions: .919 in. W x 2.700 in. H
Manifold Height:
- Front Height (A): 4.950 in. from front lifter valley cover to carb mounting flange
- Rear Height (B): 4.950 in. from rear lifter valley cover to carb mounting flange
- Carb Pad Height = 4.950 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
(8) Intake runner bosses cast in for nitrous or fuel injector ports

JEGS Carb Recommendations/Notes
Carburetors
		570 CFM	670 CFM	770 CFM
		Up to 300 HP	300 to 400 HP	400 to 500 HP
Manual Choke		510-0-81570	510-0-81670	510-0-81770
Electric Choke		510-0-80570	510-0-80670	510-0-80770

Carburetor Studs
555-15840	1-1/2" Studs	Suggested for carb and gasket only
555-15841	2" Studs	Suggested for carb and 1/2" spacer
555-15842	2-1/2" Studs	Suggested for carb and 1" spacer
555-15846	3-1/2" Studs	Suggested for carb and 2" spacer
Carburetor Base Gaskets
555-16100	Open (Square Flange)
555-16105	4-Hole (Square Flange)

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: a single or dual-plane intake manifold?

Choosing between a single or dual-plane LS intake depends on your application. The JEGS 513099 LS single-plane intake offers enhanced top-end power, ideal for performance-oriented setups.

How much HP does an upgraded intake manifold add?

Upgrading to the JEGS 513099 LS single-plane intake can add significant horsepower, optimizing airflow for improved performance. Dyno-tested for reliable power gains.

What size is an LS2 intake manifold?

The LS2 intake manifold like the JEGS 513099 is designed for cathedral port heads, ensuring a perfect fit and maximizing airflow for LS engine performance.