Holley EFI - Holley Single Plane EFI Intake - GM LS7 300-269
Type: Intake Manifold | Fits: GM
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Single Plane EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS7 cylinder heads.
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: Engine
- Color: Silver
- Construction: Cast
- EGR Port: No
- Emission Code: 3
- Engine: GM LS7
- Finish: Silver
- 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
- Part Type: Engine Intake Manifold
- Plenum Finish: Natural
- 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
- Sub Category: Cylinder Block Components
- 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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