Part # 300-680BK
$1,237.95
The Holley LS3 Ultra Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS3/L92 cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application. The front plenum flange has a 105 mm opening to work with 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 in the front configuration. The LS3 Lo-Ram is constructed to provide a very low profile modular intake manifold suitable for fabrication of special throttle body adapters or inlet ducts for custom installations. Available with single or dual injector provisions and a burst panel flange options. The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors.
Features & Benefits
Engineered for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
Fits: Ultra Lo-Ram Manifold Kit - LS3 Black Finish
Installation note: Ultra Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17" Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"
In the box: Fuel Rail(s), Gasket Or Seal, Throttle Body Gasket
| Basic Operating RPM Range | 3500-8000 RPM |
| Burst Panel Compatible | Yes |
| CNC Ported | No |
| Carburetor Flange | N/A |
| Carburetor Quantity | N/A |
| Color | Black |
| Construction | Cast |
| Cylinder Head Port Shape | Rectangle |
| Deck Height | 9.24 IN |
| EGR Port | No |
| Engine | GM LS3/L92 |
| Flange Style | EFI |
| Front Maximum Height | 6.86" height with throttle body adapter IN |
| Fuel System Type | EFI |
| Injector Quantity | Single |
| Inlet Location | Front |
| Manifold Type | Ultra Lo-Ram |
| Material | Aluminum |
| Plenum Finish | Black |
| Recommended Use | Forced Induction |
| Removable Runners | No |
| Removable Top/Lid | Yes |
| Single Or Dual Plane Type | Single Plane |
| Throttle Body Bore Diameter | 105 MM |
| Vacuum Ports | Yes |
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