LS1/LS2/LS6 Cathedral Port Carbureted Base Only (Plenum-Top-Mounting Fabrication Flange Available)
• 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.
- Port Size – 2.49” Height x 1.21” Wide
- Plenum Top Gasket Type – 3/32” Round O-ring Cord
- Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
- 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: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration.| Attributes | |
| Basic Operating RPM Range | 3500-8000 |
| Brand | Holley, Holley |
| CNC Ported | No |
| California Proposition 65 | No |
| Carburetor Flange | N/A |
| Carburetor Quantity | N/A |
| Category | Engine, Engine |
| Category Filter | Intake Manifolds |
| Clearance Category | Intake Manifolds |
| Color | Black, Black |
| Construction | Cast, Cast |
| Country of Origin (Primary) | US |
| Cylinder Head Port Shape | Cathedral |
| Cylinder Head Type | Standard |
| Deck Height | 9.24 |
| EGR Port | No, No |
| Emission | Without EGR |
| Emission Code | 4, 3, Off Road |
| Engine | GM LS1/LS2/LS6, GM LS1/LS2/LS6 |
| Engine Make/Size | GM LS1/LS2/LS6 |
| Finish | Black |
| Flange Style | N/A |
| Fuel Injectors Included | No, No |
| Fuel System Type | Carb, Carb |
| GTIN | 00090127029923 |
| Gasket Or Seal Included | No, No |
| Grade Type | Performance, Performance |
| Harmonized Tariff Code (Schedule B) | 8409915085 |
| Hazardous Material Code | N |
| Life Cycle Status Code | Available to Order |
| Material | Aluminum, Aluminum |
| NAFTA Preference Criterion Code | B |
| Number of Carbs | One |
| Plenum Finish | Black, Black |
| Position | Upper |
| Product Type | Intake Manifold Base, Intake Manifold Base |
| RPM Power Band | 3500-8000 RPM |
| RPM Range | 2500-8500 |
| SDR Required Flag | N |
| 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 | No |
| Type of Component | Lower Manifold, Lower Manifold |
| Usage | Street/Hi-Performance |
| 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 300-226BK Holley Hi-Ram Lower Manifold - GM LS1/LS2/LS6-Black
Product Information
- Brand: Holley
- Product Number: 300-226BK