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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
| Basic Operating RPM Range | 2500-7000 R3 |
|---|---|
| Brand | Holley |
| Carburetor Flange | Square/4150 |
| Carburetor Studs Included | No |
| Category | Air and Fuel Delivery |
| Intake Manifolds | |
| Category Filter | Intake Manifolds |
| 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 | No |
| Fuel System Type | EFI |
| Gasket Or Seal Included | No |
| Grade Type | Performance |
| Intake Port Gasket(s) Included | No |
| Manifold Type | Single Plane |
| Material | Aluminum |
| Nitrous Bung(s) Included | No |
| 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 |
| Throttle Body Included | No |
| Warranty | Limited 90 Day |
| UPC | 090127069660 |
| Part Number | 300-269 |
Emissions
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This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.
The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:
- 1965 and older U.S. manufactured California Certified vehicles
- 1967 and older U.S. manufactured Federally Certified vehicles
- 1967 and older Foreign manufactured vehicle
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured Federally Certified vehicles
- 1968 and newer Foreign manufactured vehicle
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