Holley LS Modular Ultra Lo-Ram EFI Intake Manifolds 300-680 Manifolds, Modular, EFI, Rectangular Port, Multi-port, 105mm Bore, Standard Deck, Aluminum, Satin, Chevy, 6.0L, 6.2L, Each
Holley LS Modular Ultra Lo-Ram EFI Intake Manifolds 300-680 Manifolds, Modular, EFI, Rectangular Port, Multi-port, 105mm Bore, Standard Deck, Aluminum, Satin, Chevy, 6.0L, 6.2L, Each
Description
Intake Manifold - LS3 Ultra Low-Ram - 105 mm Throttle Body Flange - Tunnel Ram - Front Entry - Single Injector - Rectangle Port - Aluminum - Natural - LS3 - GM LS-Series - Kit
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:15:13
Features
Note for Australian and European Markets
Unless otherwise stated, this product may be engineered for use in Left-Hand Drive vehicles. Steering components, pedals, shifters, linkages, wing mirrors, instrument clusters, panhard rods/traction bars, drag links, brake boosters, brake or clutch lines, accelerator cables, heater cores, some master cylinders and adjacent parts can vary between LHD and RHD configurations. In some models compenents such as windscreen wiper arms, motors and linkages could differ in their size and orientation. Items such as floor mats & dash mats may have differences in their structure around the front row (or padding in different locations). In many cases items are identical depending on the design of the vehicle and part, but may have differing mounts, lengths or bolt patterns. Carefully review the product images and details to ensure suitability for your vehicle, or contact StreetFX support if you are unsure. Returns are not accepted for special order products.
(keyword: manifolds)Vehicle Compatibility and Return Conditions.
This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.
Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.
Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Holley, Hilborn, Holley Efi, Retrobright, Terminator X |
| StreetFX SKU | hly300-680 |
| SFX Item ID | 4782455 |
| Accounting SKU | hly-300-680 |
| Manufacturer SKU | 300-680 |
| Manufacturer UPC | 090127100912 |
| Alternative References | 300-680, HLY-300-680, HOL300-680 |
Intake Manifolds, LS Modular, Ultra Lo-Ram EFI, Rectangular Port, Multi-port, 105mm Bore, Standard Deck, Aluminum, Satin, Chevy, 6.0L, 6.2L, Each
Holley modular Ultra Lo-Ram intake manifold kits feature a design custom-made for LS engines equipped with LS cathedral port cylinder heads, as well as OEM or aftermarket models. They provide an ideal solution for forced-induction (supercharged or turbocharged) engine applications and select throttle bodies—plus the base intake manifold features a lower overall height to fit under a stock or mildly modified hood. The included 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 LS modular Ultra Lo-Ram EFI intake manifolds best suited for your application also allow the use of front-feed plenum entry.
More product features, items, and notes include:
• Designed for forced-induction engine applications with peak power at 7,000 to 8,000 rpm (depending on the application)
• Intake design facilitates custom inlet duct and throttle body placement
• Allows design and fabrication of special throttle body adapters or inlet ducts for custom installations
• Different finishes available for the best look to match your ride
• Mounting hardware
• 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 you use
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 300-680 |
| Part Type | Intake Manifolds, Fuel Injected |
| Product Line | Holley LS Modular Ultra Lo-Ram EFI Intake Manifolds |
| UPC | 090127100912 |
| Cylinder Head Configuration | Rectangular Port LS3/L76/L92/L99 |
| Fuel Injection Style | Multi-port |
| Basic Operating RPM Range | 3,500-8,000 |
| Intake Section Included | Complete |
| Throttle Body Bore Size | 105mm |
| Engine Block Deck Height | Standard deck |
| Injectors Included | No |
| Multi-Port Fuel Rails Included | Yes |
| EGR | No |
| Aftermarket Fuel Rail Required | Yes |
| Throttle Body Included | No |
| Supplemental Bosses Cast-In | No |
| Supplemental Bosses Machined | No |
| Runners Included | Yes |
| Runners Removable | No |
| Plenum Material | Aluminum |
| Plenum Finish | Satin |
| Base Material | Aluminum |
| Base Color | Satin |
| Remanufactured | No |
| Quantity | Sold individually. |
| Notes | Front-feed single injector manifold and fuel rails. |
Compatibility
Loading compatibility information...
