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Holley 300-256BK Single Plane Split-Design Race Intake Manifold

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#425300256BK

Holley 300-256BK Single Plane Split-Design Race Intake Manifold

Name: Holley 300-256BK Single Plane Split-Design Race Intake Manifold
Brand: Holley
SKU: 425300256BK
Price: 779.95 USD
Availability: InStock

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$779.95

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$843.95

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Product Summary

2,500-7,000 RPM Range, Complete Intake Section Included

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Key Specs

MFG. Part #	300-256BK
Brand	Holley
RPM Range	2,500-7,000

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Holley 300-256BK Details

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" (0° carb flange angle)? Port Size- 3.28" Height x 1.10" Wide? Carburetor Flange - Standard 4150 for up to 1-3/4" diameter throttle bores? As-Cast Runner Cross-Sectional Area - 3.5 in² at the runner entry tapered to 2.9 in² at the flange exit

Features:

Maximum performance race design with hood clearance consideration

Lighter than other split race intakes

Split feature making porting efforts easy!

33 to 50% the price of other split race intakes

Captured O-ring seals at head ports and split

Vacuum Port options include (2) 1/8, (1) 1/4, and (1) 3/8, NPT ports at the carb flange

Black Finish

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CARB warning

Holley 300-256BK Specifications

KEY SPECS
MFG. Part #	300-256BK
Brand	Holley
RPM Range	2,500-7,000

GENERAL
EGR	No
Intake Section Included	Complete
Sold in Quantity	Each
GTIN Code	090127052358
Intake Finish	Black ceramic coated
Intake Manifold Height	7.32"
Intake Style	Single Plane
Intake Material	Aluminum

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