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HOLLEY

Holley LS Single Plane Cathedral Port Intake Manifold 300-256

PART NUMBER:
300-256
UPC:
90127052341
MPN:
300-256
Availability:
Ships from Manufacturer
Shipping:
Free over $98 in U.S. 48
Type:
Single Plane Intake Manifolds
Cylinder Head Type:
Cathedral Port
RPM Range:
2500-7500
Carb Flange:
4150 Style
Material:
Aluminum
Finish:
Satin
Intake Manifold Height:
7.320"
EGR:
No
Provision For Injectors:
No
Vacuum Parts:
(2) 1/8, (1) 1/4, and (1) 3/8, NPT
Bolts Included:
Yes
Port Seals Included:
Yes
Quantity:
Sold individually
Notes:
Split design single plane intake manifold for use with Carburetor
  • Holley LS Single Plane Cathedral Port Intake Manifold 300-256
  • Holley LS Single Plane Cathedral Port Intake Manifold 300-256
  • Holley LS Single Plane Cathedral Port Intake Manifold 300-256
  • Holley LS Single Plane Cathedral Port Intake Manifold 300-256
  • Holley LS Single Plane Cathedral Port Intake Manifold 300-256
  • Holley LS Single Plane Cathedral Port Intake Manifold 300-256
  • Holley LS Single Plane Cathedral Port Intake Manifold 300-256
  • Holley LS Single Plane Cathedral Port Intake Manifold 300-256
  • Holley LS Single Plane Cathedral Port Intake Manifold 300-256
$598.95

Description

Holley LS Single Plane Cathedral Port Intake Manifold 300-256

The new Holley Single-Plane Race intake manifold was 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.

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
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Warranty Information

All Holley Performance Products Limited Warranties are extended to the original consumer only. This Limited Warranty is not assignable or otherwise transferable. There are no warranties that extend beyond those stated herein. Holley Performance Products offers no other warranties expressed or implied beyond this Limited Warranty. In the event of an alleged defect in material or workmanship, Holley Performance Products’ responsibility is strictly limited to repair or replace the defective product. Holley has no other obligation expressed or implied. Final warranty determination will be in the sole discretion of Holley Performance Products. Holley shall not be responsible for; (a) actual or alleged labor, transportation, or other incidental charges; or (b) actual or alleged consequential or other damages incurred by use of any product of Holley Performance Products. To initiate the warranty process, the consumer must return the alleged defective product to the place of purchase with a dated receipt and completed applicable warranty claim tag. Warranty claims will be rejected if the date of purchase cannot be established by the consumer. Do not send products directly to Holley Performance Products. Holley Performance Products assumes no responsibility for products sent directly to Holley Performance Products. This Limited Warranty sets forth specific legal rights. The consumer may have other rights as a result of variations in state laws or provincial laws. This Limited Warranty supersedes all prior warranty statements. HOLLEY/FLOWTECH/HOOKER/NOS/WEIAND – NEW PRODUCT Holley Performance Products warrants its new Holley, Flowtech, Hooker, NOS, and Weiand products to be free from defects in material and workmanship for a period of 90 days from date of purchase. Holley Performance Products Limited Warranty specifically does not apply to products, which have been (a) modified or altered in any way; (b) subjected to adverse conditions, such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion, or faulty repair; or (c) used in other than those applications recommended by Holley Performance Products. Holley Performance Products also does not warrant, and disclaims all liability for products used in racing activities and/or applications other than those specifically recommended in the current brand catalog. Holley limits the warranty on Metallic Ceramic Coatings to be free from defects in material and workmanship for a period of 90 days from the date of purchase. This limited coating warranty does not apply to any products which have been subjected to adverse conditions, such as high heat encountered during engine break-in or if used during any racing activity.
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