Holley Single Plane Split-Design Intake Manifold GM LS1/LS2/LS6 Black 300-256BK
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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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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Amazon Customer
Belleville, US
★★★★★ 1
Waste of money for me
Size: 3.5 Ounce (Pack of 1)
I brought this product to see if it would help my 1 year old skin because she have a lot of break out and her break out gets badly inflamed and puffy. I try this product and it actually made it worse. It say it help for itching but my child itching increase. It dry up her skin and left like a chalky feel on the skin. I really wish I could get my money back.
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Reviewed in the United States on September 14, 2025
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Niva
Alexandria, US
★★★★★ 5
Miracle in a bottle!!
I NEVER give reviews but for this I had to!! I purchased this bottle and used a bit on my niece who is 3 years old because she also has sinus issues. It helped her immediately!! I threw it in my purse and never used it on myself and forgot about it. I have been having really bad Asthma flare ups for the past 2 months with tightness in my chest, severe bloating and phlegm for days! I was on albuterol, prescription cough medicine, Z pack and prednisone it helped a little but never got rid of it. My sinus and allergies were bad as well!! I was just suffering terribly!! A few days later after I used it on my neice my asthma worsened to the point I almost went in to ER because it was so bad. I remebered it so I pulled it out of my bag rubbed it on my back, chest, neck and my forehead. I cannot tell you enough the immediate relief I felt!! I was finally able to sleep well that night and today I did not have to use my asthma machine at all!! Idk what this lil bottle did but it worked like a lil miracle on me!! THANK YOU FOR THIS PRODUCT!! I have already ordered MORE!!
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Reviewed in the United States on February 11, 2022
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Cailei
Grantham, US
★★★★★ 5
THIS STUFF WORKS
I’ve been bed ridden w some type of facial/sinus infection for months on and off, and when I tell you this was the ONLY thing that helped w my intense headache pain, IT REALLY WORKED ! Best thing I’ve ever used tbh, and I’m always trying natural things for pain relief. (I hate pills but sometimes nothing else works for my chronic migraines) but this stuff is amazing. and it smells so good ! I’d totally buy again, and I’ve always recommended it to two other ppl, and they loved how it worked as well !
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Reviewed in the United States on February 27, 2023
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Dawn
Alexandria, US
★★★★★ 4
Essential oil
Works well
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Reviewed in the United States on February 21, 2025
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Natasha Rodriguez
Los Angeles, US
★★★★★ 5
Must try product
This product is my go to helps you breath this product is mostly for parents who doesn't want to give chemicals to there kids and for adults that doesn't like chemical products it's all essential oils natural i love it i use it on my baby and omg it helps but disclaimer everyone is different but it's a must try
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Reviewed in the United States on February 22, 2025

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