Part # 300-137
$574.95
Single Plane EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.
Features & Benefits
Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM
Fits: Single Plane EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.
Installation note: Includes mounting bolts & washers. Also includes O-ring cylinder head mounting flange gaskets for an OEM style seal. Kit does not work with factory fuel rails and requires the use of Holley Fuel Rail Kit P/N 534-219._x000D_ _x000D_ NOTE: The EFI versions of the LS HI-Ram intake manifold and fuel rail are designed to accept Bosch Style EV-1 or Magneti Marelli Pico fuel injectors. OE LS fuel injectors may not fit properly in the Hi-Ram EFI intake manifold fuel rail assembly. There is a kit available separately for the LS7 Hi-Ram EFI to allow the use of stock LS7 fuel injectors, P/N 300-230 (see below in the service parts section).
In the box: Gasket Or Seal
| Basic Operating RPM Range | 2500-7000 RPM |
| CNC Ported | No |
| Carburetor Flange | Square/4150 |
| Carburetor Quantity | 1 |
| Color | Silver |
| Construction | Cast |
| Cylinder Head Port Shape | Cathedral |
| Deck Height | 9.24 IN |
| EGR Port | No |
| Engine | GM LS1/LS2/LS6 |
| Flange Style | 4150 Square Bore |
| Front Maximum Height | 5.417 IN |
| Fuel System Type | EFI |
| Manifold Type | Single Plane |
| Material | Aluminum |
| Plenum Finish | Natural |
| Rear Maximum Height | 5.417 IN |
| Recommended Use | Forced Induction |
| Removable Runners | No |
| Removable Top/Lid | No |
| Single Or Dual Plane Type | Single Plane |
| Throttle Body Bore Diameter | 3.6 IN |
| Vacuum Ports | Yes |
The EFI Brain
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