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#425300621BK
Holley 300-621BK Modular Lo-Ram EFI Manifold LS1/2/6, Front Feed
$849.95
each
Factory Shipped
This part will be shipped by the manufacturer. We estimate this item will ship on or before December 5th.
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Product Summary
LS1, LS2, LS6, EFI Fuel System Type, Aluminum, Black
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Key Specs
| MFG. Part # | 300-621BK |
| Brand | Holley |
| Intake Manifold Type | Lo-Ram |
| Material Type | Aluminum |
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Holley 300-621BK Details
Lo-Ram Manifold Kit - LS1/2/6 Front-feed Black Finish
The Holley LS1/2/6 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 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 in the front-feed configuration.
The 300-621 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.
Features:
- 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.
- 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
- Modular design allowing the use of front-feed plenum entry
- Intake design facilitates custom inlet duct and throttle body placement
- Low height to fit under a stock or mildly modified hood in the front-feed configuration
- Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
- Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
- High volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)
Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17"
Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"
Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17"
Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"
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Guides & Documents
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Holley 300-621BK Specifications
Holley 300-621BK Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 300-621BK |
| Brand | Holley |
| Intake Manifold Type | Lo-Ram |
| Material Type | Aluminum |
| GENERAL | |
| Fuel System Type | EFI |
| Injection Style | Multi-port |
| Color | Black |
| EGR | No |
| Throttle Body Bore Size | 105mm |
| Intake Section Included | Complete |
| Plenum Material | Aluminum |
| Plenum Finish | Black |
| Base Finish | Black |
| Base Material | Aluminum |
| Throttle Body Included | No |
| Injectors Included | No |
| Aftermarket Fuel Rail Required | Yes |
| Fuel Rails Included | Yes |
| Runners Included | Yes |
| Runners Removable | No |
| Supplemental Bosses Cast-In | No |
| Supplemental Bosses Machined | No |
| Sold in Quantity | Kit |
| GTIN Code | 090127079676 |