Black Finish with Single Injector manifold and fuel rails
The 300-600BK is the lower manifold in the 300-620BK complete kit. Offering this separately allows you to select your components individually as you build your system.
- High volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)
- Low height to aid the use of a plenum mounted air-to-water intercooler in a top-feed configuration
- Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application
- Base manifold and rail kit for Low-Ram 300-620BK allows you to select your components individually as you build your intake system
- Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
Application Summary:
| Year |
Make/Model |
| Designed |
for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads |
| Attributes |
| Basic Operating RPM Range |
3500-8000 |
| Brand |
Holley EFI, Holley EFI |
| California Proposition 65 |
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 |
| CNC Ported |
No |
| Color |
Black, Black |
| Construction |
Cast, Cast |
| Country of Origin (Primary) |
CN |
| Cylinder Head Port Shape |
Cathedral |
| Deck Height |
9.24 |
| EGR Port |
No, No |
| Emission Code |
3, 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 |
EFI, EFI |
| Gasket Or Seal Included |
Yes, Yes |
| Grade Type |
Performance, Performance |
| Harmonized Tariff Code (Schedule B) |
8409915085 |
| Hazardous Material Code |
N |
| Injector Quantity |
Single, Single |
| Inlet Location |
Top, Top |
| Life Cycle Status Code |
Available to Order |
| Manifold Type |
Lo-Ram, Lo-Ram |
| Material |
Aluminum, Aluminum |
| NAFTA Preference Criterion Code |
B |
| Number of Carbs |
None; For Fuel Injection |
| Plenum Finish |
Black, Black |
| Position |
Lower |
| Product Type |
Intake Manifold Base, Intake Manifold Base |
| Recommended Use |
Forced Induction, Forced Induction |
| RPM Power Band |
3500-8000 RPM, 3500-8000 |
| RPM Range |
7000-8000 |
| Sale Category |
Air and Fuel Delivery |
| SDR Required Flag |
N |
| Single Or Dual Plane Type |
Single Plane, Single Plane |
| Throttle Body Bore Diameter |
N/A |
| Throttle Body Gasket Included |
No |
| Usage |
Street/Hi-Performance |
| Vacuum Ports |
Yes |
| Warning |
California Proposition 65, California Proposition 65 |
| Warranty |
Limited 90 Day, Manufacturer's Limited 90 Day Warranty |
| GTIN |
00090127079065 |
