Holley EFI Intake - Chevy Big Block V8 EFI - 300-561
SKU: 38929979192

Holley EFI Intake - Chevy Big Block V8 EFI - 300-561

Sale price$314.98 Regular price$349.98
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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Description

Holley EFI Intake - Chevy Big Block V8 EFI - 300-561Overview: Holley EFI is excited to launch four new multi point fuel injection intake manifolds for the big block Chevy. These new intakes are available to fit oval or rectangular port heads, and 4150 or 4500 style throttle bodies. These Intakes are ideal for converting your big block high performance or racing engine from carburetion to fuel injection. These intake manifolds were computer designed and dyno proven to produce more horse power and torque

Overview:

Holley EFI is excited to launch four new multi-point fuel injection intake manifolds for the big block Chevy. These new intakes are available to fit oval or rectangular port heads, and 4150 or 4500 style throttle bodies. These Intakes are ideal for converting your big block high performance or racing engine from carburetion to fuel injection. These intake manifolds were computer designed and dyno proven to produce more horse power and torque than other EFI manifolds. Each manifold package includes anodized and laser etched fuel rails, and two sets of mounting brackets (brackets allow use of 1.48" or 2.56" O-ring to O-ring injector lengths).

Features:

  • Open plenum/single plane design
  • No EGR provisions
  • 3000-7500 RPM power band
  • 4150 carburetor mounting flange
  • Includes fuel rails and mounting brackets
  • Designed for today's larger cubic inch big block Chevy race engines
  • Perfect for hard core drag racers in the NHRA Super Comp, Super Gas, and Street classes as well as IHRA Quick Rod, Super Rod, and Hot Rod categories
  • Oval Port Dimensions: 1.87” High x 1.60” Wide
  • Height: Front 5.96", Rear 5.96"

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley EFI
Construction Cast
Emission Code 3
Engine Chevy Big Block V8
Manifold Type High Rise
Product Type EFI Manifolds
RPM Power Band 3000-7500
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: 38929979192

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Jeniffer castro
Battle Creek, US
★★★★★ 5
Sturdy & easy to move around
Its solid & sturdy. It does exactly what it’s supposed to. You have the option to fill it up with water or sand , I choose water. It holds the umbrella in place. The wheels and handle make it really easy to move around, which is a huge plus. It fits perfectly and feels very well made. Great addition for my pool area!
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Reviewed in the United States on April 18, 2026
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HV
Waukegan, US
★★★★★ 5
Heavy-Duty Base with Convenient Mobility
This umbrella base does exactly what it’s supposed to—keeps the umbrella stable while still being easy to move around when needed. Once filled with water/sand, it feels solid and secure even on slightly windy days, which gives peace of mind. The built-in wheels are a standout feature. Moving the base across the patio is smooth and doesn’t require much effort. The handle placement is well thought out, making repositioning quick and hassle-free. Overall, it’s a great balance of stability and convenience. Highly recommend if you want a sturdy base without sacrificing mobility.
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Reviewed in the United States on March 31, 2026
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Chiranjeev Shah
Boise, US
★★★★★ 5
The base that fits!
Finally, easy to put together and the right fit just before summer. It was extra windy so I put extra weight.
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Reviewed in the United States on March 23, 2026
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colonel227
Boise, US
★★★★★ 5
Holds up in high winds
Easy set up and holds umbrella in high winds
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Reviewed in the United States on April 5, 2026
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Bela.blue.reviews
Lexington, US
★★★★★ 5
Sturdy umbrella base
Sturdy umbrella base. Heavy duty and should not blow over in the wind. Will hold up for years.
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Reviewed in the United States on March 23, 2026

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