Holley Single Plane EFI 4500 Split-Design Race Intake Manifold 300-294BK
SKU: 6673341325

Holley Single Plane EFI 4500 Split-Design Race Intake Manifold 300-294BK

Sale price$382.48 Regular price$424.98
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Description

Holley Single Plane EFI 4500 Split-Design Race Intake Manifold 300-294BKOverview: The new Holley Single Plane Race intake manifold is designed with maximum performance in mind. Featured is a two piece split design that provides access for all levels of porting and modification. With shoulder bolt locators and O ring seal, disassembly & reassembly is simple and precise. The manifold with AN 8 fuel rails fits GM LS Gen III engines with cathedral port heads and has a 4500 Dominator style carb flange for carburetors, EFI

Overview:

The new Holley Single-Plane Race intake manifold is designed with maximum performance in mind. Featured is a two-piece split design that provides access for all levels of porting and modification. With shoulder bolt locators and O-ring seal, disassembly & reassembly is simple and precise. The manifold with AN-8 fuel rails fits GM LS Gen III engines with cathedral port heads and has a 4500 Dominator style carb flange for carburetors, EFI throttle bodies, or EFI throttle body elbows, and is configured with a LS MAP sensor port along with other NPT plenum vacuum or air-temp sensor ports. The LS Race single-plane intake manifold is designed for hi-performance/racing engine applications, 5.3 to 6.2+ liter displacements, N/A or with power adders. The large volume 4500 plenum and optimized runners provide airflow potential for Hi-RPM engines with max power at 7500-8000+ RPM.

Features:

  • Maximum performance 4500 Dominator flange 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 plenum split
  • Vacuum Port options include (2) 1/8, (1) 1/4, and (1) 3/8, NPT ports at the carb flange
  • Two versions available: EFI type - Billet Fuel Rails and rail mounting hardware included, or Carbureted / Sniper EFI 4500 TBI style

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 4500
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: 6673341325

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Len Dale
Whiting, US
★★★★★ 5
Nice case for carrying keyboards
The case is perfect for carrying keyboards or other items. I am using it for an apple keyboard and trackpad.
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Reviewed in the United States on June 2, 2024
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Verified Purchase
DJ
New York, US
★★★★★ 5
Excellent Black Shelf Brackets for Sturdy Shelves!
Style: Black 8 Pack, Size: 7.25 inch
I recently purchased these black shelf brackets for my home office, and they have been a game-changer! The quality is outstanding, and they provided the sturdiness I needed for my shelves. I was able to create beautiful shelves effortlessly by pairing these brackets with 8" wide pine boards. These brackets are incredibly well-made and durable. They held the weight of my books, files, and office supplies with ease, without any signs of bending or sagging. I feel confident that my items are secure and won't come crashing down. Installation was a breeze. The brackets came with all the necessary hardware, and the instructions were clear and straightforward. Within minutes, I had my shelves up and ready to use. This is my second pack of these brackets, and I couldn't be happier with my purchase. They are versatile, allowing me to create customized shelves that perfectly match my office decor. The sleek black finish adds a touch of elegance to the overall look. If you're looking for high-quality and sturdy shelf brackets, I highly recommend these. They have exceeded my expectations, and I am delighted with the results. Don't hesitate to give them a try for your shelving projects!
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Reviewed in the United States on June 1, 2023
R
Verified Purchase
RJ
Natrona Heights, US
★★★★★ 5
Good deal and good quality!
Style: Black 10 Pack, Size: 9.25 inch
Sturdy and as advertised. Just like you’d get at big box store but much better price!
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Reviewed in the United States on May 16, 2026
O
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Obo Nosyal
Birmingham, US
★★★★★ 5
Sturdy
Style: Black 4 Pack, Size: 5.5 inch, Style: Black 4 Pack, Size: 5.5 inch
Brackets worked great. Very sturdy. Used them to fabricate a bath shelf and towel rack.
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Reviewed in the United States on April 20, 2026
A
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Andrew Heidrich
Lowell, US
★★★★★ 5
The screws are the best part
Style: Black 6 Pack, Size: 11.25 inch, Style: Black 6 Pack, Size: 11.25 inch
OK. So I spend a lot on (and I mean A LOT) on Amazon and I never write reviews. Just not my thing. But I had to write a review for this product. These brackets are fantastic - attractive, sturdy. But what threw me was the screws - they are SUCH high quality. They don't strip or lose their black color at all even when your drill, set to 0 slip, loses grip repeatedly because you drilled the pilot hole too small and are throwing every ounce of your body weight against it to get it to drive. And they give you extra! Like, enough to mount 8.5 brackets in a 6-bracket box. I am saving alllllll of these extra screws; if I could buy them separate I would. It might seem like a small thing but hardware is usually a place companies skimp on HARD, and to be confronted with such quality was truly a breath of fresh air. The brackets take some mounting expertise to ensure everything is true - lots of measuring and leveling (some minor differences in angle + or - a couple degrees, but they're SOLID. I will be buying these again in the future. Kudos for an awesome product.
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Reviewed in the United States on August 20, 2024

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