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Holley LS Split Design Carbureted Intake Manifolds 300-256 Manifolds, Design, Carbureted, Cathedral Port Head, Single Plane, 4-barrel, Square Bore, Aluminum, Satin Finish, Chevy, 4.8-6.0L, Each

Holley LS Split Design Carbureted Intake Manifolds 300-256 Manifolds, Design, Carbureted, Cathedral Port Head, Single Plane, 4-barrel, Square Bore, Aluminum, Satin Finish, Chevy, 4.8-6.0L, Each

A$1,934.24
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
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Description

Holley LS split design carbureted intake manifolds are single-plane racing units designed with performance in mind. They feature a race-bred, 2-piece split feature that was previously only found on the most expensive race intakes. The manifolds will fit GM LS Gen III engines with cathedral port heads—and are intended for 4150-style square bore flanged carburetors or throttle body EFI. The LS Race single-plane intake manifold was designed for high performance/racing engine applications, 5.3 to 6.2+ liter displacement—and maximum engine speeds of 6,000 to 7,000 rpm, depending on the engine combination. This single-plane design provides optimal performance across the rpm spectrum, while providing maximum performance up to 7,000 rpm.

Features include:

* Maximum performance race design with hood clearance consideration
* Lighter than other split race intakes
* Split feature allows disassembly of the intake for direct access to internal plenum and port surfaces, making custom porting and matching a snap
* Shoulder bolt locators and O-ring seal make reassembly simple and precise
* 33 to 50 percent the price of other split race intakes
* Vacuum port options: Two 1/8 in., one 1/4 in., and one 3/8 in. NPT ports at the carb flange

Part Type

GM LS Intake Manifold Split Design LS1/LS2/LS6

Data: v4.2 - Upd: 2026-10-17 03:13:07

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
300-256
Product Attributes - Part Type
Intake Manifolds, Carbureted
Product Attributes - Product Line
Holley LS Split Design Carbureted Intake Manifolds
Product Attributes - UPC
090127052341
Product Attributes - Intake Section Included
Complete
Product Attributes - Engine Block Deck Height
Standard deck
Product Attributes - Carburetor Quantity
One
Product Attributes - Intake Style
Single plane
Product Attributes - Basic Operating RPM Range
2,500-7,000
Product Attributes - Intake Manifold Height
7.320 in.
Product Attributes - Intake Color
Natural
Product Attributes - Intake Material
Aluminum
Product Attributes - EGR
No
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Holley
StreetFX SKU hly300-256
SFX Item ID 4784680
Supplier Item Code 4784680
Manufacturer SKU 300-256
Manufacturer UPC 90127052341
Alternative References HOL300-256, 4-barrel, 4.8-6.0L

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1997
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.7L/350
    Carburetor Mounting4-barrel square bore
    Cylinder Head TypeCathedral Port LS1/LS2/LS6
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2007
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size4.8L/294
    Carburetor Mounting4-barrel square bore
    Cylinder Head TypeCathedral Port LS1/LS2/LS6
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2007
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.3L/325
    Carburetor Mounting4-barrel square bore
    Cylinder Head TypeCathedral Port LS1/LS2/LS6
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2007
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Carburetor Mounting4-barrel square bore
    Cylinder Head TypeCathedral Port LS1/LS2/LS6

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