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Spectre 774

Low Profile Dual Plenum Kit
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5.0 out of 5 stars 2 Customer Reviews
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$292.04 USD
MSRP $389.39 25.0% Off
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Spectre’s Air Intake Kits are available for a number of applications and are designed to fit your classic muscle car. Manufactured from high quality polished aluminum, the cast aluminum plenum fits carburetors and TBI throttle bodies with a 5-1/8 inch inlet offering a low profile design for tight hood clearance applications. The plenum is 2.4 inches tall and attaches to dual 4 inch outside diameter aluminum air intake tubes that have a 22 degree downward bend and a 90 degree bend to the front of the vehicle. Always check for proper clearance between the neck of the carburetor/TBI and the bottom of the hood before closing the hood. Air filters are not included in this kit allowing you to add any clamp-on air filter that will fit onto a 4 inch outside diameter air intake tube. 4 worm gear clamps and two couplers are included.
  • Fits 5-1/8 inch inlets on TBI throttle bodies and carburetors
  • Air intake tubes bend down at 22 degrees with a forward 90 degree bend
  • Easy to install with commonly available tools
  • Polished aluminum finish

Part SPE-774 Product Specifications

Product StyleSpectre Plenum Kit
Intake Pipe Color / FinishPolished
Intake Pipe MaterialAluminum
Clamps Included4
Clamp StyleWorm Gear
Clamp MaterialStainless Steel
Weight10.7 lb (4.9 kg)
Product Box Height12.63 in (321 mm)
Product Box Length22.25 in (565 mm)
Product Box Width14.25 in (362 mm)
Couplers Included2
Mounting Hardware IncludedYes
WARNING: Cancer and reproductive

Product Reviews

March 1, 2018 - Part 774
Fits fine on my '66 vette with 700 Hp N/A 454 SBC with 10:1 comp on pump gas.

Brandt Hulderman
Tucson, Arizona
June 15, 2016 - Part 774
I've always had clearance issues with air cleaners in my Backdraft Racing Cobra replica, especially with my (Brand Name) intake. Anything that would fit in the available space was too small and was choking airflow to the carburetor. So, I spotted this item on line and it looked like it might fit, rolled the dice, and installed it (along with a separate hose and clamp kit also from Spectre). It fits barely but it fits. It looks good too. I've had several other Cobra replica owners stop, look, and ask questions, so I think others will be giving this a try as well. The unit appears to be well made. I'll be taking my car to a dyno next week to verify there is little or no restriction in flow to the carburetor compared to my previous setup.

Long Beach, California
October 27, 2015 - Part 774
Parts work as advertised. 3 5/8 sleeve is hard to get on, but does work. Make sure notch is lined up before putting on as it will not slide once on.

Review part 774