Holley 300-255 – Single Plane Intake Manifold Kit

Description

Holley 300-255 – Single Plane Intake Manifold Kit

Intake Manifold – Single-Plane Race – Square Bore – Single Plane – Aluminum – Cathedral Port – Natural – LS1 / LS2 / LS6 – GM LS-Series – Kit

Single Plane Intake Manifold Kit; Carbureted; w/Cathedral Port Cyl. Heads; Front Height/Rear 7.32 in.; RPM Power Band 2500-7000; Satin Finish; For Use w/LS1/LS2/LS6;

The new Holley Single-Plane Race intake manifold were designed with performance in mind. They feature a race bred, two piece split feature that was previously only found on the most expensive race intakes. The manifold 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 hi-performance/racing engine applications, 5.3 to 6.2+ liter displacement, and maximum engine speeds of 6000-7000 rpm, depending on the engine combination. This single-plane design provides optimal performance across the RPM spectrum while providing maximum performance up to 7000 rpm.The Holley LS Race manifold incorporates a split feature, which allows disassembly of the intake for direct access to internal plenum and port surfaces, making custom porting and matching a snap. With shoulder bolt locators and O-ring seal, reassembly is simple and precise. Technical Data‚· A-B Height – 7.32 in. (0° carb flange angle)ï‚· Port Size- 3.28 in. Height x 1.10 in. Wide‚· Throttle Body Flange – Standard 4150 for up to 1-3/4 in. diameter throttle boresï‚· As-Cast Runner Cross-Sectional Area – 3.5 in² at the runner entry tapered to 2.9 in² at the flange exit

• Lighter than other split race intakes
• Captured O-ring seals at head ports and split
• Maximum performance race design with hood clearance consideration
• 33 to 50% the price of other split race intakes
• Billet Fuel Rails and rail mounting hardware included.
• Split feature making porting efforts easy!
• Vacuum Port options include (2) 1/8, (1) 1/4, and (1) 3/8, NPT ports at the carb flange

Barrels: 4Basic Operating RPM Range: 3500-8000Brand: HolleyCarburetor Flange: Square/4150Carburetor Quantity: 1Carburetor Studs Included: NoCategory: EngineCNC Ported: NoColor: SilverConstruction: CastCylinder Head Port Shape: CathedralDeck Height: 9.24EGR Port: NoEmission Code: 3Engine: GM LS1/LS2/LS6Flange Style: 4150 Square BoreFront Maximum Height: 7.32Fuel Injectors Included: NoFuel Rail(s) Included: NoFuel System Type: EFIGasket Or Seal Included: NoGrade Type: PerformanceIntake Port Gasket(s) Included: NoManifold Type: Split Single PlaneMaterial: AluminumNitrous Bung(s) Included: Nopart type: Engine Intake ManifoldPlenum Finish: NaturalProduct Type: Intake ManifoldRear Maximum Height: 7.32Recommended Use: Forced InductionRemovable Runners: NoRemovable Top/Lid: NoSingle Or Dual Plane Type: Single PlaneSub Category: Cylinder Block ComponentsThrottle Body Bore Diameter: 3.6Throttle Body Gasket Included: NoThrottle Body Included: NoVacuum Ports: YesWarning: California Proposition 65Warranty: Manufacturer’s Limited 90 Day Warranty