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AFCO aluminum filter assembly

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Old Jul 10, 2011 | 09:02 PM
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Default AFCO aluminum filter assembly

Has anyone used this style air filter on their car? I cant tell if the hump on the lid would hit the hood or not. It has a 2" drop and I have a BB/LT1 hood with a small block.



http://www.summitracing.com/parts/AFC-80550/
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Old Jul 12, 2011 | 05:51 AM
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Can't really answer your question, but I am looking at the base only for a BB L88 air chamber project and just wanted to let you know that the base is available with out the top from Speedway. If you think the top will not work, perhaps you could go with a different flatter style top but still get the 2" drop of the AFCO base? What carb are you using ?

Base only #10680550X3 = $36

ikwhite

Originally Posted by vette427-sbc
Has anyone used this style air filter on their car? I cant tell if the hump on the lid would hit the hood or not. It has a 2" drop and I have a BB/LT1 hood with a small block.

http://www.summitracing.com/parts/AFC-80550/
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Old Jul 12, 2011 | 04:57 PM
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Thanks for the tip on the speedway base... I really would like to use the top because of its design. It helps to funnel the air into the carb better than the typical flat top design.
Also, if you consider that the base is dropped 2" and you use a 3" tall filter, you really only have 1" or even less of airspace above the carb flange. With the AFCO lid, it is bubbled to increase the airspace between the carb flange and the lid. There are a few articles online that show some power increases with this lid compared to the flat style. (Im supposed to believe everything on the internet, right? )
The carb is a Holley 650 DP.
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Old Jul 12, 2011 | 11:59 PM
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No that makes perfect sense and I agree if you can make it work with that top you would be better off. Just to add I see Summit also sells the top and bottom separately as well, just in case anyone else comes across this thread.

ikwhite

Originally Posted by vette427-sbc
Thanks for the tip on the speedway base... I really would like to use the top because of its design. It helps to funnel the air into the carb better than the typical flat top design.
Also, if you consider that the base is dropped 2" and you use a 3" tall filter, you really only have 1" or even less of airspace above the carb flange. With the AFCO lid, it is bubbled to increase the airspace between the carb flange and the lid. There are a few articles online that show some power increases with this lid compared to the flat style. (Im supposed to believe everything on the internet, right? )
The carb is a Holley 650 DP.
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Old Jul 13, 2011 | 03:06 AM
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I have used and still have a couple of those lids,and yes they will pick up a pony or three over some of the other air cleaners out there,but in the big picture/real world won't make a huge difference.It will likely fit,if you like I can measure the depth from the top of the lid to the wing nut base,off the top of my head its not much more than an inch.
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Old Jul 13, 2011 | 01:08 PM
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Remember you are supposed to run a 4" filter with those dome top/2" drop air cleaners. A 3" filter will put the the bubble 1" over the carb throat....Even if using an HP main body carb with no choke horn, the lid will pose a restriction at some point..... That is basically what happened to me running my 2" drop L88 base but with a LT1 lid and a 3" filter...... It cost me 13 rwhp on the chasis dyno... BUT this was on a 650hp engine....

All you can do is try it, dyno it and see it what it does...or better yet run it down the strip with and without it and see what it does...
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Old Jul 13, 2011 | 05:06 PM
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Originally Posted by ajrothm
Remember you are supposed to run a 4" filter with those dome top/2" drop air cleaners. A 3" filter will put the the bubble 1" over the carb throat....Even if using an HP main body carb with no choke horn, the lid will pose a restriction at some point..... That is basically what happened to me running my 2" drop L88 base but with a LT1 lid and a 3" filter...... It cost me 13 rwhp on the chasis dyno... BUT this was on a 650hp engine....

All you can do is try it, dyno it and see it what it does...or better yet run it down the strip with and without it and see what it does...
Yeah I figured a 3" filter wouldnt be ideal with the 2" drop base... especially since I still have the choke horn on my Holley DP. Im going to check my clearances tonight and see what kind of room I have under there. Using a 4" filter, they claim 2-5/8" over the carb flange. Im trying to get my motor to breathe a little bit better when I spin it towards 6k without losing the awesome low end I have with the 650 carb
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Old Jul 13, 2011 | 08:57 PM
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Originally Posted by vette427-sbc
Has anyone used this style air filter on their car? I cant tell if the hump on the lid would hit the hood or not. It has a 2" drop and I have a BB/LT1 hood with a small block.



http://www.summitracing.com/parts/AFC-80550/
Yes, I have this exact air cleaner. What they say about it is true. The air is funneled to the carb through the bubble top. Engine Masters Challenge competitors use this air cleaner and convinced me when I witnessed a 5 hp across the range gain on all engines we dynoed (mine included), vs. the K & N Xstream open top. (I have an L-88 hood, but if you have a stock height intake it should fit....it sits lower than a stock air cleaner.





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Old Jul 13, 2011 | 11:05 PM
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Is that a 3" or 4" filter?
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Old Jul 14, 2011 | 12:34 PM
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Originally Posted by C3 Stroker
Yes, I have this exact air cleaner. What they say about it is true. The air is funneled to the carb through the bubble top. Engine Masters Challenge competitors use this air cleaner and convinced me when I witnessed a 5 hp across the range gain on all engines we dynoed (mine included), vs. the K & N Xstream open top.
Did you/they run it against the stock (real) air cleaner lid or just the K&N open top?

If the side element is large enough to support the needed air flow, the K&N open top can be a detriment as it doesn't provide that nice radius for the air to follow that the stock lid provides.
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Old Jul 14, 2011 | 07:58 PM
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Originally Posted by vette427-sbc
Is that a 3" or 4" filter?
3" air filter, K&N element. (A 4" won't fit under my hood).
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Old Jul 14, 2011 | 08:12 PM
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Originally Posted by toddalin
Did you/they run it against the stock (real) air cleaner lid or just the K&N open top?

If the side element is large enough to support the needed air flow, the K&N open top can be a detriment as it doesn't provide that nice radius for the air to follow that the stock lid provides.
The comparison was against a stock type base, 3" tall, 14" diam. air cleaner with a K&N open element AND K&N Xstream open top lid. This was used because the big argument that dyno day (mainly from me) was that the K&N just HAD to less restrictive. So my K&N was used against the dyno's AFCO air cleaner. After the dust cleared, I bought the AFCO immediately.

I thought the K&N had the advantage until I saw the dyno results. The drop base bubble top's "ram" effect draws in more air than the relatively still turbulent air atop the K&N.

Last edited by C3 Stroker; Jul 14, 2011 at 08:31 PM.
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