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I need some advice - I currently have an 8.25" air cleaner assembly on my 427 and I know it's just not getting the air it needs. It runs rich and I really don't care about "that authentic look". I can put it on the engine when showing the car (which is almost never). If I believe the K&N formula for surface area, I'm 2/3 short at 6000 RPM. The correct size seems to be 14" diameter by 3" height. The carb is a 650 CFM Street Demon. What is everyone else using for air cleaners? K&N? Rush? All suggestions are very welcome - including part numbers if you have them. The hood clearance is always a problem and the K&N adds 4.67" to the carb flange as a drop base won't fit with the electric choke. I'll see if I have that much clearance after work today.

Thanks

Tim