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-   -   Help with air cleaner fit under hood (http://www.clubcobra.com/forums/all-cobra-talk/133052-help-air-cleaner-fit-under-hood.html)

TNTaylor 05-03-2015 08:54 AM
Quote:
Originally Posted by Gaz64 (Post 1347127)
The consumption of the engine is 468 x 5500 / 3456= 745 cfm.

So you do need 3 inch of height.
What is the formula that results in "3456"?

TNT

Gaz64 05-03-2015 12:46 PM
Quote:
Originally Posted by TNTaylor (Post 1346831)
Well, I tried the R2C base plate,

http://www.summitracing.com/parts/rcp-ac10615/reviews/

with the 3" filter and it fit PERFECTLY, with at least 1/2" room to spare between the top of air cleaner and hood (remember 427 Street with NO SCOOP.) This is on a Holley 850 HP. I know this is expensive, but unlike the K&N drop bases, it works.

Pix to follow
That's great if that works for your clearance issue, now just get their 14" filter:
14 Inch High Performance Street Air Filters

Quote:
Originally Posted by mrmustang (Post 1347174)
Only if he does not use the extreme filter top, which has a 500cfrm flow rate of it's own.

Bill S.
Ah yes, your right Bill, but needing a minimum clearance above the bowl vents, nearly negates the use of such a low height element. Far better off getting a low drop base that flows well, as he already has done.

Quote:
Originally Posted by TNTaylor (Post 1347195)
What is the formula that results in "3456"?

TNT
It is a "constant" in the engine airflow formula:

cubic inches to cubic feet= 12 x 12 x 12 =1728

x 2 (induction stroke every second revolution) = 3456

Assuming 100% VE.

Bernica 05-03-2015 02:03 PM
You might try staying with the 9" AF and use this 9" drop base and an Extreme top. I make the base plates and Mickmate sells the complete kit. There are several members here that are using them on some big engines. I run it on my 482 FE with a 2" AF and no problems.;)

MAXX Air System MAXX Air System [427 289 CSX CCX KMP ACE HT SPF] - $267.40 : Acton Custom Enterprises, Custom Metal for Cobras


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