LS1/LS2/LS6 Cathedral Port EFI Base Only
• EFI fuel rails are machined for -8AN O-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits
• EFI fuel rails are machined for -8AN O-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits
- Silver color
- Mounting Flange Gasket Type - Standard LS3 Molded O-ring
- Port Size - 2.49” H x 1.21” W
- Plenum Top Gasket Type - 3/32” Round O-ring Cord
- Runner Length - 6.58” As-Cast Runner Cross-Sectional Area - Tapered 4.25 in² to 2.53 in²
Information:
These parts should be used for the following applications: Performance, Racing, and Street Rodder where hood restrictions are not a consideration.| Attributes | |
| Basic Operating RPM Range | 3500-8000 |
| Brand | Holley EFI, Holley EFI |
| CNC Ported | No |
| Carburetor Flange | N/A |
| Carburetor Quantity | N/A |
| Carburetor Studs Included | N/A |
| Category | Air and Fuel Delivery, Intake Manifolds |
| Category Filter | Intake Manifolds |
| Clearance Category | Intake Manifolds |
| Color | Natural, Natural |
| Construction | Cast, Cast |
| Country of Origin (Primary) | US |
| Cylinder Head Port Shape | Cathedral |
| Deck Height | 9.24 |
| EGR Port | No, No |
| Emission Code | 3, 4, Off Road |
| Engine | GM LS1/LS2/LS6, GM LS1/LS2/LS6 |
| Finish | Silver |
| Flange Style | N/A |
| Fuel Injectors Included | No, No |
| Fuel System Type | EFI, EFI |
| GTIN | 00090127681725 |
| Gasket Or Seal Included | Yes, Yes |
| Grade Type | Performance, Performance |
| Harmonized Tariff Code (Schedule B) | 8409915085 |
| Hazardous Material Code | N |
| Life Cycle Status Code | Available to Order |
| Material | Aluminum, Aluminum |
| Plenum Finish | Natural, Natural |
| Product Type | Intake Manifold Base, Intake Manifold Base |
| RPM Power Band | 3500-8000 RPM, 3500-8000 |
| SDR Required Flag | N |
| Sale Category | Air and Fuel Delivery |
| Single Or Dual Plane Type | Single Plane, Single Plane |
| Sub Category | Cylinder Block Components, Cylinder Block Components |
| Throttle Body Bore Diameter | N/A |
| Throttle Body Gasket Included | N/A |
| Type of Component | Lower Manifold, Lower Manifold |
| Vacuum Ports | Yes |
| Warning | California Proposition 65, California Proposition 65 |
| Warranty | Limited 90 Day, Manufacturer's Limited 90 Day Warranty |
| part type | Engine Intake Manifold, Engine Intake Manifold |
Holley EFI 300-227 Holley Hi-Ram Lower Manifold - GM LS1/LS2/LS6
Product Information
- Brand: Holley EFI
- Product Number: 300-227