I remember that article. Black car with gold wheels. Talked a lot about taking the rules to the limit??? I will look and see if I still have it. Zieg
----- Original Message ----- From: "mike f" <[EMAIL PROTECTED]> To: "The Chevelle Mailing List" <[EMAIL PROTECTED]> Sent: Monday, February 09, 2004 10:42 AM Subject: Re: [Chevelle-list] Cowl Induction > Chuck and all. > I thought I saw this in an old CHP magazine. So during > the holidays, I dug a years worth out and looked but I > did not find it. I rememberd something about this > firewall-aircleaner assy made by Smokey Yunick for the > 67 chevelle NASCAR car. Does that sound right? > > Mike Fry > > --- Chuck Hanson <[EMAIL PROTECTED]> wrote: > > on 2/4/04 10:11 PM, tom at [EMAIL PROTECTED] wrote: > > > > > I got the latest issue of Chevelle World with the > > article about installing a > > > cowl induction setup through a hole in the > > firewall (Rudisill's cowl plenum > > > system). I also noticed that John Bedenbender's 66 > > Elky > > > > > > http://www.midwestchevelles.com/past_shows/mw2002/66elky.htm > > had a similar > > > cowl plenum arrangement through the firewall > > (pretty cool). Some articles > > > about cowl induction on the web said that the cowl > > induction intake should > > > be 1" or more above the hood line since air flow > > at the hood line was low. > > > If this is the case, could there be an air flow > > problem with intake through > > > the firewall, which I assume gets its air through > > the cowl grate which is > > > below the hood level? > > > > > > Tom Tomlinson > > > '71 Malibu > > > '66 El Camino > > > > > > > > Tom, > > Somewhere in the article I'm sure I mentioned the > > fact that a high pressure > > area exists at the base of the windshield. Smokey > > Yunick may not have been > > the first to figure it out, but he sure put that > > theory to practical > > application, and if you peek under the hood of any > > NASCAR racer you'll find > > that essentially the same system is still put to > > use. The pressure > > differential at the base of the windshield is also > > the same reason that > > Chevrolet configured the '69 Camaro and '70-2 > > Chevelle Cowl Induction > > packages like they did. > > > > The cowl plenum system that Rudisell is offering > > duplicates the > > over-the-counter package that Chevrolet offered > > during the late Sixties, to > > help improve on- and off-track performance of > > serious Chevy competitors. > > I've seen them installed on Camaros, Chevelles, > > Novas, and even full-size > > Chevys. > > > > The discussion of airflow over the surface of the > > hood is a bit out of > > context for a true "cowl induction" setup, because > > the high pressure at the > > base of the windshield is quite adequate enough to > > yield a "force air" > > effect. The notion that the intake location should > > be at least an inch > > above the hood's surface applies most directly to a > > forward facing "scoop," > > and placing one in that location (at least an inch > > above the hood's surface) > > increases its effectiveness substantially. An even > > better solution for a > > forward facing scoop is to locate it at the leading > > edge of the hood, much > > like the Olds 442 setups of the early Seventies. > > > > The rearward facing scoop on the second-generation > > Trans Ams, however, were > > minimally functional at best... and purely cosmetic > > at worst. The location, > > elevation, and direction of the "scoop" all > > conspired to reduce its > > effectiveness considerably. They did "shake" > > whenever the engine was > > throttled, however, and DID LOOK pretty cool. I > > also question the > > effectiveness of the Mopar and Ford "Shaker" scoops > > of the same era. At the > > very least, they did allow a cooler, denser charge > > of air into the engine, > > although it had to be sucked in rather than forced > > in by using nature's > > physics to accomplish the job. > > > > My '69 L89 convertible has been finished since last > > June, and the cowl > > plenum setup is a definite attention-getter at all > > the shows and cruises > > I've taken it to, not to mention the unique wail > > that emanates from the > > firewall opening every time the secondaries are > > called into action. It may > > not be for everybody, but for me it was the perfect > > complement to my '69 SS! > > Those of you who watch HorsePower TV will get a > > quick peek at it in a week > > or two... > > > > Chuck > > > > > > > __________________________________ > Do you Yahoo!? > Yahoo! Finance: Get your refund fast by filing online. > http://taxes.yahoo.com/filing.html
