I noticed that after installing dual Carter/Weber carbs, that it took fairly heavy foot pressure on the accelerator to get things moving. The C/W's come with 2 coil springs on each carb and made it totally unnecessary to use any other return spring on the linkage. It took a little time to get used to the stiff gas pedal, but the carbs are great performers, and I was willing to use them without modification.
However, I recently installed an Audiovox ccs-100 cruise control and found that the servo had a tough time holding with the heavy spring pressure. A call to Tom L. of Stovebolt Engineering Co., the vendor, to verify that it wouldn't have an adverse effect to remove one of the coil springs, confirmed my solution. In fact, he suggested removing 2 of the 4 springs and to use a light spring on the linkage to keep down vibrations and rattles. Using carbs in a dual configuration doubles the built-in return spring pressure and removing the spring towards the front of each carb did the trick. Adding a light linkage spring really makes a big difference in throttle control and my servo functions as advertised.
If you want to enhance your driving experience a bit, the Audiovox ccs-100 at under $90. might be of interest. It sure helps on the long drives.
Dave
BTW...if any of you are interested in the Audiovox ccs-100 Cruise control installation on a dual carb setup, I've documented the install in my Webshots "Tips and Tricks" album.
Last edited by Fla54Chevy3100; 11/07/2007 2:23 PM.