Holley EFI - Holley Single Plane EFI Intake - GM LS7-Black 300-269BK
Type: Intake Manifold | Fits: GM
Single Plane EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS7 cylinder heads-Black Finish
Designed with a 4150 Square bore flange. Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM
.
Minimum carb flange height - fit in vehicles with minimum hood modifications. Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS power adder applications.
The manifold kit includes the fuel rails, mounting hardware, and o-ring cylinder head mounting flange gaskets.
Features:
- 2500-7000 RPM power band
- 4150 Square bore flange
- Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM
- Minimum carb flange height - fit in vehicles with minimum hood modifications
- Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS mild power adder applications
- Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality
- Weight - 11.5 lbs.
- Height (front) - 5.417" to the lifter valley cover flange at the engine block front flange and bellhousing flange
- Port size - 2.33" height x 1.27" wide
- Includes FKM o-ring intake to cylinder head gaskets
Specs:
- Basic Operating RPM Range: 2500-7000 R3
- Brand: Holley EFI
- Carburetor Flange: Square/4150
- Carburetor Studs Included: No
- Category: Intake Manifolds
- Color: Black
- Construction: Cast
- EGR Port: No
- Emission Code: 3
- Engine: GM LS7
- Finish: Black
- Flange Style: 4150 Square Bore
- Front Height: 5.417 inch
- Front Maximum Height: 5.417 IN
- Fuel Injectors Included: No
- Fuel Rail(s) Included: Yes
- Fuel System Type: EFI
- Gasket Or Seal Included: Yes
- Grade Type: Performance
- Intake Port Gasket(s) Included: No
- Manifold Type: Single Plane
- Material: Aluminum
- Nitrous Bung(s) Included: No
- Plenum Finish: Black
- Product Type: Intake Manifold
- Rear Height: 5.417 inch
- Rear Maximum Height: 5.417 IN
- Recommended Use: Forced Induction
- Removable Runners: No
- RPM Power Band: 2500-7000 RPM
- Single Or Dual Plane Type: Single Plane
- Throttle Body Included: No
- Warranty: Limited 90 Day
Tech Resources:
Includes fuel rails, mounting hardware, and O-ring cylinder head mounting flange gaskets.
The included fuel rails are designed to accept Bosch Style EV-1 or GM OE LS7 fuel injectors.
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Important Notices
- Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
