installed an Edelbrock 10" air cleaner.. WHAT A DIFFERENCE!!

May 13, 2005 26 Replies
"

You've misquoted me. I have said many times that the stock air FILTER (not airbox) will flow more air than the engine can use. Put that filter in a restrictive OEM airbox and it can't perform to potential.

You fellas are missing some other key points here as well:

Lowering the filter element by removing the PCV shroud effectively puts the injectors directly in the flow of incoming air and promotes better atomization.

Using an air filter with a smaller diameter but greater height changes the direction air enters the throttle body and passes by the injectors; it is pretty much on a straight downward course as opposed to traveling sideways thru the filter then making a 90 when it hits the vacuum of the intake stream. This increases air velocity and also helps with proper atomization.

Doc

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B

I'm going to go outside and take a picture of the factory air intake on my truck... maybe then they'll se why it makes such a difference.

-Bret

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W

atomization.

My memory aint what it once was, but it seems to me we used to place 2-4 inch high "velocity" stacks between the air filter housing and the carbs to increase horsepower and torque. The idea being to give the air a chance to start flowing in a smooth downward direction. and also speed the air flow up through the carb. So removing the base adaptor in favor of a flat floor air cleaner housing seems to go counter to that line of thinking. Given how hot under hood temperatures are, not using a snorkel system of some sort seems counter productive as well. will agree the stock ones in most cases are too small, and modifying them to use two hoses such as Buick, Olds and Chrysler did back in the day (as well as others) would be the way to go coupled with a 4" velocity stack. As to Harry's question about WOT, I put Brett between 17 and 24 closer to

17, so I would say the poor rig spends considerable time at WOT.

Whitelightning

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B

removing the PCV adapter is to get the injectors and fuel pressure regulator out of the way.

which if you look at

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you'll see that they take up more than half of the area allowed by the PCV spacer. carburators don't have to worry about injectors or FPR's. the only thing in the bores are the annular boosters and they take up less than 10% of the area. this is why *in this application* a flat bottomed aircleaner with a tall element is better than a velocity stack.

the bigger problem is illustrated by:

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and
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the snorkel, which is over 2 feet long is a meager 1"X4" on the outside and makes 3-90 degree turns. so giving the pipe an internal area of 2.8sq in (assuming a wall thickness of .125". of course the throttle bores have a combined area of 4.4 sq. in. aka a loss of more than 36% of flow potential.

no one said it wasn't. all I ever said was the open air cleaner *in this application* is better than the *stock* configuration

will agree the stock ones in

well with a 4" stack, the stock air box would be sticking through the hood.

I love how these always devolve into "you're some dumb punk kid who doesn't know s*it". I'm a 31 year old happily married father of 3 and my truck sees WOT about 2% of the time, if it's even that high.

-Bret

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W

I'll admit to making a bad assumption on the age based on the wording of the first post. It sounds like a 17 year old whose parents gave him a decent chunk of change for his birthday.

Whitelightning

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"

The air cleaner is $24.95 at Autozone..........you define that as a decent chunk of change?

Doc

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