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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
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Instruction Sheet
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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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
4.3 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 2
Not quite right….
Color: White, Size: Standard
I’m torn on this pillow. While it does have merit, there were some serious “flaws” for me. I am a side sleeper and I’ve been on the hunt for a neck supportive pillow. This didn’t have that for me. The night started with good possibility, but I woke up several hours in and found the pillow flat where I was; all the filling had moved to the top. It IS very cool to the touch and I could definitely tell it was cool while sleeping on it. The loft of this pillow is fine, but not stupendous, and the softness was pretty great. Overall, just not the best. If the filling had stayed put through the night, I might’ve kept, but as it was, I returned.
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Reviewed in the United States on September 22, 2025
★★★★★ 5
Does the job!
Color: White, Size: Standard
This pillow offers superb support and stays cool. It replaced my previous one from a couple years back. I did notice that, like so many things, it isn’t as full as my previous one but still offers a good nights rest for this side sleeper.
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Reviewed in the United States on February 3, 2026
★★★★★ 5
Desert dwellers love these
Size: King
These pillows are incredible. They keep our heads cool and comfortable all night long. Extremely well made and no funky smell.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
COOLING MEMORY FOAM PILLOW
Size: Queen
THESE PILLOW ARE GREAT!! THEY SEND A SMALL POUCH OF ADDITIONAL FOAM THAT CAN BE ADDED WHEN YOU NEED TO ADJUST TO YOUR COMFORT. THEY STAY COOL AND THAT IS THE BEST THING FOR THAT PERSON WHO IS ALWAYS HOT.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
No stiff neck-- just as promised!
Size: Queen
Like most people I have tried all kinds of pillows to receive my stiff neck--to no avail. I decided to spend the extra money on this (since it was returnable) expecting it not to deliver, but in hopes that it would. I am happy to say the pillow provides great support, yet is fluffy and malleable. It looks a little flat out of the box, but give it an hour or so and it expands to full "fluff". The pillow is very comfortable, provides amazing support despite its soft, fluffy feel. Not being sculpted or rigid foam, it is easy to adjust and get the right support. Somehow it works! I have not had a stiff neck since I bought this. I did add about half the bag of extra material, but removed some because it was a little too much for me. The stuffing is clean, uniform and looks pristine. It comes with a beautiful pillow case that is thick and smooths out any "lumps" (which there aren't anyway because the filling is so soft and uniform.) I plan to order another one for our other home. Highly recommend.
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Reviewed in the United States on February 12, 2026
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