SKU: 50747521139

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
  • 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: 50747521139

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vanessa
Los Angeles, US
★★★★★ 5
Great gift
Color: 7-in-1 Silver, Size: Rechargeable
It’s really easy to use, works amazing, nice speed. It looks awesome on my counter top. Great idea for a gift!!!
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Reviewed in the United States on April 12, 2026
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Jeremiah Priddy
Alexandria, US
★★★★★ 4
Great value
Color: 6-in-1 Silver, Size: Rechargeable
Great value for the price. Opener works great and holds a charge well.
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Reviewed in the United States on March 30, 2026
M
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Mike
Charlottesville, US
★★★★★ 5
Don't pass this one by
Color: Gunmetal Grey, Size: Rechargeable
This is the best wine opener we ever had...push button once...it goes in, pulls cork out, then reverses and drops cork in your hand...all with one push of the button. Long battery life between charges.
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Reviewed in the United States on May 6, 2026
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Vivian Davis
Fort Morgan, US
★★★★★ 5
Works just like it says.
Color: 8-in-1 Silver, Size: Rechargeable
My hands can no longer open a bottle of wine. This makes it so easy.
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Reviewed in the United States on May 29, 2026
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The Glitzy One
Houston, US
★★★★★ 5
Quality wine opener.
Color: 7-in-1 Silver, Size: Rechargeable Set
I really like this wine opener. It's well made. The foil cutter is metal unlike the last one I had that was plastic and broke. The wine stopper works well to take air out of the bottle and seal it. It also has a cool blue light that comes on when in use and charging.
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Reviewed in the United States on March 29, 2026

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