Ultra Lo-Ram Manifold Kit - LS1/2/6
The Holley LS1/2/6 Ultra Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Ultra Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112-581 or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood.
- Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
- Modular design allowing the use of front-feed plenum entry
- Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
- Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
- No burst panel, solid cast
- Intake design facilitates custom inlet duct and throttle body placement
- High volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)
- With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used
- Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
- Low height to fit under a stock or mildly modified hood in the front configuration
Information:
Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17"
Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"
Application Summary:
| Year |
Make/Model |
| Modular |
Lo-Ram EFI Manifold LS1/2/6 Front Feed (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 |
Silver, Silver |
| Construction |
Cast, Cast |
| Country of Origin (Primary) |
CN |
| Cylinder Head Port Shape |
Cathedral |
| Cylinder Head Type |
Cathedral Port |
| 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 |
Silver |
| Flange Style |
EFI, EFI |
| Front Height |
6.86" height with throttle body adapter |
| Front Maximum Height |
6.86 IN, 6.86" height with throttle body adapter |
| Fuel Injectors Included |
No, No |
| Fuel System Type |
EFI, EFI |
| Gasket Or Seal Included |
No, No |
| Grade Type |
Performance, Performance |
| Harmonized Tariff Code (Schedule B) |
8409915085 |
| Hazardous Material Code |
N |
| Injector Quantity |
Single, Single |
| Inlet Location |
Front, Front |
| Life Cycle Status Code |
Available to Order |
| Manifold Type |
Ultra Lo-Ram, Ultra Lo-Ram |
| Material |
Aluminum, Aluminum |
| NAFTA Preference Criterion Code |
B |
| Number of Carbs |
None; For Fuel Injection |
| Part Type |
Engine Intake Manifold, Engine Intake Manifold |
| Plenum Finish |
Natural, Natural |
| Position |
Upper |
| Product Type |
Intake Manifold, Intake Manifold |
| 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 |
| Sub Category |
Cylinder Block Components, Cylinder Block Components |
| Throttle Body Bore Diameter |
105 MM, 105 MM |
| Throttle Body Gasket Included |
Yes |
| Usage |
Racing |
| Vacuum Ports |
Yes |
| Warning |
California Proposition 65, California Proposition 65 |
| Warranty |
Limited 90 Day, Manufacturer's Limited 90 Day Warranty |
| GTIN |
00090127077573 |
