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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

A$2,704.40
IN STOCK! Est Ship 4-7 days. In stock at 1 location (5 available)

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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

Data: v4.2 - Upd: 2026-11-08 06:34:46

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.

(keyword: efi)

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
BrandHolley
Manufacturer's Part Number300-680
Part TypeIntake Manifolds, Fuel Injected
Product LineHolley LS Modular Ultra Lo-Ram EFI Intake Manifolds
UPC090127100912
Cylinder Head ConfigurationRectangular Port LS3/L76/L92/L99
Fuel Injection StyleMulti-port
Basic Operating RPM Range3,500-8,000
Intake Section IncludedComplete
Throttle Body Bore Size105mm
Engine Block Deck HeightStandard deck
Injectors IncludedNo
Multi-Port Fuel Rails IncludedYes
EGRNo
Aftermarket Fuel Rail RequiredYes
Throttle Body IncludedNo
Supplemental Bosses Cast-InNo
Supplemental Bosses MachinedNo
Runners IncludedYes
Runners RemovableNo
Plenum MaterialAluminum
Plenum FinishSatin
Base MaterialAluminum
Base ColorSatin
RemanufacturedNo
QuantitySold individually.
NotesFront-feed single injector manifold and fuel rails.

Compatibility

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