SKU: 49517497758

Holley Single Plane EFI Split-Design Race Intake Manifold GM LS1/LS2/LS6 300-255

Sale price$224.97 Regular price$249.97
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Description

Holley Single Plane EFI Split-Design Race Intake Manifold GM LS1/LS2/LS6 300-255Overview: 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 ? Throttle Body 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
  • Billet Fuel Rails and rail mounting hardware included.

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Barrels 4
Brand Holley
Color Silver
Construction Cast
Emission Code 3
Engine GM LS1/LS2/LS6
Finish Satin
Flange Style 4150 Square Bore
Front Height 7.32"
Fuel System Type EFI
Manifold Type Split Single Plane
Product Type Manifold
Rear Height 7.32"
RPM Power Band 2500-7000
Warranty Limited 90 Day
Shipping Notes
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Exchange/Return Notes
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SKU: 49517497758

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4.1 ★★★★★
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Kelsey
Pawtucket, US
★★★★★ 3
Good, soft, plush
Color: Grey, Size: 74"x90"
Big and fluffy and soft... But could have been softer and more plush. Overall good buy though.
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Reviewed in the United States on January 27, 2026
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Claire K
Phoenix, US
★★★★★ 5
VERY HAPPY
Color: Brown, Size: 74"x90"
Very beautiful nice weight , it’s looks bigger than I expected .. I can use it has a blanket on my king size or a nice cover and protect for my leather sofa I love it and I really recommend this beautiful blanket/ trow .. just buy it yo won’t disappointed Thank you Amazon !!!!
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Reviewed in the United States on May 24, 2026
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Verified Purchase
Tami Gibbins
Omaha, US
★★★★★ 5
Throw
Color: 01 - White, Size: Throw (50" X 60")
So very pretty, do plush !!$
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Reviewed in the United States on May 13, 2026
A
Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 4
Nice
Color: 01 - White, Size: King (108" X 90")
This blanket is generously sized and soft. I deducted one star because a small portion of the furry side came out matted after washing. It isn't really noticeable but something to be aware of. Probably best dried on low heat.
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Reviewed in the United States on May 17, 2026
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LB
Charlottesville, US
★★★★★ 5
Not ultra dense, but very soft and cozy
Color: 03 - Beige, Size: Throw (50" X 60")
This is a really nice throw. It’s very soft and cozy, and for the price, I think it’s a great value. I like the sewn-in label too. It gives it a slightly more high-end look compared to the more generic fuzzy blankets you see everywhere now. The texture is a little different from some faux fur blankets I’ve had. It’s not that super dense, ultra-short type where you can’t really see the fibers. This one has a bit more length to the pile, so you can see the strands more. It’s more like a thicker but slightly airy kind of softness, and it’s really nice on my skin. It’s really, really cozy to snuggle up with. 👋 One thing I always recommend with blankets like this—no matter the brand—is do not put it in the dryer. Even on low, the heat and tumbling will start to change the texture. If you want it to stay as soft as it is when you first get it, wash it gently and let it air dry. The reason is all faux fur is made from very fine synthetic fibers (basically plastic). Even low heat and the tumbling action can cause those fibers to start to stiffen, flatten, or slightly melt together over time. Once that happens, it loses that soft, fluffy texture and you can’t really get it back. I think this would make a great gift, and it’s hard to find a faux fur blanket this soft at this price point. Five stars! ⭐️⭐️⭐️⭐️⭐️
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Reviewed in the United States on May 2, 2026

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