[Tigers] Air cleaner & horsepower

[Dave Munroe]

Hey Bugz:

That shouldn't have been a surprise. With more than double the surface area 
of the K & N filter, the Edelbrock
should have flowed a lot more air. The question is: can you squeeze a 4" 
filter under a stock, no-bubble bonnet?

If so, pretty cheap horsepower!

It would be interesting to see a head-to-head comparison of the 4" Edelbrock 
with a 4" K&N....

Dave


----- Original Message ----- 
From: "Rense, Mark (GE, Appl & Light)" <mark.rense at ge.com>
To: <tigers at autox.team.net>
Sent: Thursday, July 05, 2012 11:23 AM
Subject: Re: [Tigers] Air cleaner & horsepower


> All,
> I built a fairly mild 5-bolt 289 (Performer 1.90" heads, 500 cfm 4bbl, 
> F4B,
> CompCams XE262, Eagle rotating assembly, 9.5:1 compression, Pertonix in
> dual-point, stock exhaust manifolds) for B382000991 about ten years ago 
> and
> when I ran the car on a chassis dyno I tried several air cleaner 
> combinations.
> The best run was with a standard Edelbrock air cleaner with 4" element and 
> the
> car peaked at 273 HP at 6200 RPM. I put the stock Tiger air cleaner on 
> with a
> K&N 1 1/2" element. The flow was so restricted I had to open up the carb 
> and
> drop in a leaner set of secondary jets. The best we could get out of that
> setup was 254 HP at 5800. So, the 20 HP loss is reality.
>
> I just finished another 5-bolt 289 with a 332 kit and it is scheduled to 
> go on
> the dyno tomorrow for break-in and set-up. I plan to run a couple 
> different
> carb/air cleaner combinations, so I will include a stock Tiger air cleaner 
> if
> I have time. I have both 1 1/2" and 2" K&N elements.
>
> Bugz
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