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Description
Holley EFI Intake Manifold 396, 402, 427, 454, 502 for 4500 Style Flange, Rectangular Port HeadsHolley EFI Intake Chevy Big Block V8 EFI Holley EFI Intake Manifold 396, 402, 427, 454, 502 for 4150 Style Flange, Rectangular Port Heads 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
Holley EFI Intake - Chevy Big Block V8 EFIHolley EFI Intake Manifold 396, 402, 427, 454, 502 for 4150 Style Flange, Rectangular Port Heads
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
- 3500-8000 RPM power band
- 4500 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
- Rectangle Port Dimensions: 2.28??? High x 1.48??? Wide
- Height: Front 5.96", Rear 5.96"
Details:
- Construction: Cast
- Engine: Chevy Big Block V8
- Manifold Type: High Rise
- RPM Power Band: 3500-8000
- Warranty: Limited 90 Day
Links
Instruction Sheet
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.0 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Great for cats, get rid of lip lifter!
Color: Microbrush Kit
The best toothbrush for cats! It fits and is easy to maneuver, and because it’s small, my cat doesn’t mind the shape. The only thing is that the lip lifter hits teeth and gets caught in cheeks, so I sanded that off, which has made teeth brushing much easier.
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Reviewed in the United States on April 12, 2026
★★★★★ 4
Soft brush, good quality!
Color: Microbrush Kit
I like that the bristles on the brush are very soft and it's curved well for my kitty's mouth. The only thing that I don't care for is the handle is pretty long and doesn't need to be.
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Reviewed in the United States on May 12, 2025
★★★★★ 5
Best best pet toothbrush I have tried
Color: Microbrush Kit
This is by far the best toothbrush I have found for my cat. It was clearly designed by someone who deeply understands feline dental health. The way the bristles decrease toward the tip and the specialized part for lifting the corner of the mouth are incredibly thoughtful and effective features. While the bristles are soft, they are strong enough to provide the necessary pressure against the teeth. My cat has a relatively small head and mouth, yet she resisted this brush the least of all. I will not be going back to my previous toothbrushes. Very highly recommended!
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Cat approves, easy to use, comfortable to grip, sturdy.
Color: Microbrush Kit, Color: Microbrush Kit
My cat seems to love it so that's a automatic win! I was a little unsure about using a long handled toothbrush, I thought it would be more difficult to use but turns out its actually easier than the little finger brushes. The heads on the toothbrushes can be swapped, making it so that you dont have to buy a whole new one. It's been a few months since I bought it and its holding up well, no major wear on it aside from some gnaw marks from my Chonk chewing on it. Fits nicely in my hand and the brush head isn't too big for my cats tiny faces & teeth. I'd recommend it so far and I'm going to keep on with this brush instead of trying a new product every time.
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Reviewed in the United States on June 4, 2025
★★★★★ 3
its packaged nice and it is a smaller product to fit in kitty mouths but still not great.
Color: Microbrush Kit
it's a nice product but still doesn't make my cats any easier to brush. Nor does it seem enjoyable. I enjoy brushing my teeth and I want them too also. I believe cats life would be so much longer if we brushed their teeth. Think about how early our ancestors died before proper dental care.
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Reviewed in the United States on April 6, 2025
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