Re: [Chevelle-List] Get a howl from a Holley?

[Capt Crunch]

The secondaries on Quads are very large and are known to make the howl you are referring to by design. The 850 cfm quads (found on many 400,403, & 455  olds/buick/pontiac's, and 472 & 500 Caddys) seem to make the most noise, but it is hard to say for sure. Holleys are designed differently and most have smaller secondaries (I will guess you are running a 650?) and I have never really heard much of a howl with them, but most times all I hear is exhaust :) If you have looked at the bottom of a quad verses the bottom of a 650 Holley you will see the secondaries are larger then the primaries on the quad and the secondaries will be approx. the same size on the Holley 650.   If you really want to see if they are opening all the way.... grab a buddy and watch as they put the pedal to the floor.   Mikey   ----- Original Message ----- From: Mark Weber Sent: Sunday, June 30, 2002 1:31 PM To: [EMAIL PROTECTED] Subject: [Chevelle-List] Get a howl from a Holley?   While test-driving as part of a reassembly, I am not sure the secondaries are opening on my Holley Street Avenger.  I have an open element air cleaner. In the old days my 400 sb with a quadrajet would really howl when the secondaries opened up.  It sounded really cool. I don't hear a sound like that now, and I am wondering if the secondaries are opening up at all?  Maybe that sound was specific to that engine or carb? Can anyone else hear when the secondaries are opened up and the engine is running under load? Thanks, Mark 71SS ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]