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Holley EFI | SKU:
300-621
Holley 300-621 Modular Ultra Lo-Ram EFI Manifold LS1/2/6
Ultra Lo-Ram Manifold Kit - LS1/2/6
Regular price
$2,081.40 NZD
+ GST
Unit price
/
Unavailable
Shipping calculated at checkout.
Holley 300-621 Modular Ultra Lo-Ram EFI Manifold LS1/2/6 is not in stock at Fast Lane Spares and will ship direct from supplier
⚠ Special Order Item — ships direct from supplier. No returns, exchanges, or cancellations once processed. Please allow 7–20 days shipping.
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Description
Description
Ultra Lo-Ram Manifold Kit - LS1/2/6
Part Number: 300-621
The 300-621 Lo-Ram 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.
Features and Benefits
• Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
• 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
• 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
Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17"_x000D_ Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"
Part Number: 300-621
The 300-621 Lo-Ram 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.
Features and Benefits
• Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
• 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
• 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
Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17"_x000D_ Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"
Specifications
Specifications
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Specifications
Basic Operating RPM Range 3500-8000 Brand Holley EFI Carburetor Flange N/A Carburetor Quantity N/A Carburetor Studs Included N/A Category Engine CNC Ported No Color Silver Construction Cast Cylinder Head Port Shape Cathedral Deck Height 9.24 EGR Port No Emission Code 3 Engine GM LS1/LS2/LS6 Flange Style EFI Front Maximum Height 6.86" height with throttle body adapter 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 part type Engine Intake Manifold Plenum Finish Natural Product Type Intake Manifold Recommended Use Forced Induction Removable Runners No Removable Top/Lid Yes Single Or Dual Plane Type Single Plane Sub Category Cylinder Block Components Throttle Body Bore Diameter 105 MM Throttle Body Gasket Included Yes Throttle Body Included No Vacuum Ports Yes Warning California Proposition 65 Warranty Manufacturer's Limited 90 Day Warranty -
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