Holley EFI Holley Modular Ultra Lo-Ram EFI Manifold LS1/2/6 - 300-621BK
$1,099.95
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The 300-621 Ultra Lo-Ram front-feed plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines.
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.
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.
Holley EFI Holley Modular Ultra Lo-Ram EFI Manifold LS1/2/6 - 300-621BK
$1,099.95
Features:
- Intake design facilitates custom inlet duct and throttle body placement
- Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
- Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
- Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
- Low height to fit under a stock or mildly modified hood.
- 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
- Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
- High volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)
- Modular design allowing the use of front-feed plenum entry
Product Specifications:
- Product Details: Ultra Lo-Ram Manifold Kit - LS1/2/6-Black Finish
- Basic Operating RPM Range: 3500-8000 RPM
- Carburetor Flange: N/A
- Carburetor Quantity: N/A
- Carburetor Studs Included: N/A
- CNC Ported: No
- Color: Black
- Construction: Cast
- Cylinder Head Port Shape: Cathedral
- Deck Height: 9.24 IN
- EGR Port: No
- Engine: GM LS1/LS2/LS6
- Flange Style: EFI
- Front Maximum Height: 6.86" height with throttle body adapter IN
- Fuel Injectors Included: No
- Fuel Rail(s) Included: Yes
- Fuel System Type: EFI
- Gasket Or Seal Included: No
- Grade Type: Performance
- Injector Quantity: Single
- Inlet Location: Front
- Intake Port Gasket(s) Included: No
- Manifold Type: Ultra Lo-Ram
- Material: Aluminum
- Nitrous Bung(s) Included: No
- Plenum Finish: Black
- Product Type: Intake Manifold
- Recommended Use: Forced Induction
- Removable Runners: No
- Removable Top/Lid: Yes
- Single Or Dual Plane Type: Single Plane
- Throttle Body Bore Diameter: 105 MM
- Throttle Body Gasket Included: Yes
- Throttle Body Included: No
- Vacuum Ports: Yes
Installation Notes:
Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17" Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"