LS1/LS2/LS6 Cathedral Port Carbureted Base Only (Plenum-Top-Mounting Fabrication Flange Available)
The Holley GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS1/LS2/LS6 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more!
- Port Size – 2.49” Height x 1.21” Wide
- Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
- 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: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration.
Application Summary:
| Year |
Make/Model |
| LS1/LS2/LS6 |
Cathedral Port Carbureted Ba |
| Attributes |
| ASIN |
B00075X0BY |
| Basic Operating RPM Range |
3500-8000 |
| Brand |
Holley, Holley |
| California Proposition 65 |
No |
| Carburetor Flange |
N/A |
| Carburetor Quantity |
N/A |
| Category |
Intake Manifolds, Air and Fuel Delivery |
| Category Filter |
Intake Manifolds |
| Clearance Category |
Intake Manifolds |
| CNC Ported |
No |
| Color |
Natural, Natural |
| 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 |
3, 4, Off Road |
| Engine |
GM LS1/LS2/LS6, GM LS1/LS2/LS6 |
| Engine Make/Size |
GM LS1/LS2/LS6 |
| Finish |
Silver |
| Flange Style |
N/A |
| Fuel Injectors Included |
No, No |
| Fuel System Type |
Carb, Carb |
| 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 |
| part type |
Engine Intake Manifold, Engine Intake Manifold |
| Plenum Finish |
Natural, Natural |
| Position |
Upper |
| Product Type |
Manifold, Intake Manifold Base |
| RPM Power Band |
3500-8000 RPM |
| RPM Range |
2500-8500 |
| Sale Category |
Air and Fuel Delivery |
| 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 |
| GTIN |
00090127681718 |
