SKU: 57195475626

Holley Single Plane Split-Design Intake Manifold GM LS1/LS2/LS6 Black 300-256BK

Sale price$350.98 Regular price$389.98
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

Holley Single Plane Split-Design Intake Manifold GM LS1/LS2/LS6 Black 300-256BKOverview: 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

Overview:

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

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Barrels 4
Brand Holley
Color Black
Construction Cast
Emission Code 3
Engine GM LS1/LS2/LS6
Finish Black
Flange Style 4150 Square Bore
Front Height 7.32"
Fuel System Type Carb
Manifold Type Split Single Plane
Product Type Manifold
Rear Height 7.32"
RPM Power Band 2500-7000
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 57195475626

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Caitlyn
Phoenix, US
★★★★★ 5
Amazing!
Size: King (Pack of 1)
Such a great pillow I’m buying another one! You can add or subtract stuffing to your liking. It’s really nice quality, quilted and soft. Best pillow ever. Super comfy and great sleep. Pretty firm with all the stuffing. Perfect the way it came with stuffing on the side. My husband loves it and now I want one.
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Reviewed in the United States on May 15, 2026
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Alli
Houston, US
★★★★★ 5
Totally worth the money
Size: King (Pack of 1), Size: King (Pack of 1)
Right off the bat, the packaging is absolutely adorable and felt like I was buying a premium product. I love that this pillow is adjustable and as a side sleeper, I needed a pillow that is both firm and supportive of my neck. This hits all the boxes. We will be buying more of these for our bed!
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Reviewed in the United States on June 1, 2026
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Imane
Massapequa, US
★★★★★ 5
Great value, perfect pillow
Color: White, Size: Standard (Pack of 1)
It has been so difficult to find a shredded memory foam pillow for a decent price, and i am super happy with this one! My old pillow was getting flat in the middle when i slept on it so i need a new one. This is super comfortable and the filling is packedddd. Im glad it comes with the ability to remove foam to get the perfect fluffiness and support needed for your personal preference
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Reviewed in the United States on May 8, 2026
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Ashley McHugh
Phoenix, US
★★★★★ 5
great quality, for a great price
Color: White, Size: King(pack of 2)
Very comfortable!! that hotel feel, for a great price! good quality material, only took a few hours to form correctly.
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Reviewed in the United States on April 7, 2026
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JHrdina
Carnegie, US
★★★★★ 5
Comfortable
Color: White, Size: Queen(Pack of 2)
Way comfortable, I can now fall asleep within five minutes. I own all the expensive pillows. Most are hard as rocks. This pillow is just the right firmness. Glad I made the purchase.
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Reviewed in the United States on May 10, 2026

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