What size open element air filter??..

[Impex]

I want to get an k&n air filter open element type but im not sure what size to get. Any help from you guys would be great!

Thanks

 

[82K5]

Mine's a 14" round and 2" high. You will also need to get a top and bottom for it.

Phil
82K5

 

[Bigd]

I once read in a Hot Rod article that a larger round element breaths better then a tall skinny one.Can't remember why though.

 

[BB454]

14"x4" on my 454 - The space between the carb and the inside of the bonnet/hood is the limit of how tall you could go with the K&N. Previously ran a 14"x6" on the smallblocks that had more space on top. Also get the K&N Pre-cleaner that covers the filter - It does keep the filter cleaner and looks great without restricting the flow at all.

BB454
IF IT DOES NOT HAVE 8 PISTONS - IT'S BROKEN !

 

['73 K5]

There's a formula I read a while back. You take the engine size x highest RPM divided by something and it tell you how high the element should be. Its set up for 14" elements. I remember when I did mine that I put in 350 x 5,000 RPM and it said I needed a 3 inch tall one. If your motor is really high perf, then get a 4 or 5 incher.

'73 K5
Chevy good...Ford bad

 

[Balou]

14 x 3" is doing fine for my 350.

Balou
'79 K5,350,465,205

get fuc.... M-Class out of my way !!!

 

[NYC K5]

the smaller, wider air filters are better because of renyolds #, trust me i just took my fluids final last week

 

[NYC K5]

the intake calculation goes something like bore(in feet)*stroke(in feet)*number of cylinders*max rpm=air needed in cubic feet per minute(cfm) im pretty sure thats it. you may want to add 10%naturally aspirated,50% turboed anything more than that is throwing money out the window.

 

[Blazer79]

I have a 14"x5" on mine. It's supposed to flow 900cfm, but I got it for looks mostly (my carb is 750cfm and I know I never use more than 600cfm). It really looks beautiful with that chrome cover. With an Edelbrock Performer Intake and an Edelbrock #1902 Q-jet, the wingnut barely scratches the hood.

Just be careful because I think it's not smog-legal in some states.

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What the heck!...Drive it like gas is $0.50/gal!!!</font color=black>