Quote:
Originally Posted by Excaliber
I recall the old Quadrajet (mostly on GM stuff). With the small primaries and very large secondaries you could FEEL and HEAR those secondaries coming into play.
But, generally speaking and specifically speaking of Holleys you should not be able to feel or hear it very much or at all. It should be a smooth transition, if you can feel it, your secondary spring is likely to light weight. Thus the need for a paper clip test.
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Not to correct you....but from what I understand, if you can feel the secondaries kick in, as in a boost of power, the spring is too strong and the secondaries are kicking too late. If the spring is too light and the secondaries kick in too soon, there will be a bog in the acceleration. After I replaced the vacuum diaphragm I put in the long yellow spring, the 3rd lightest. I will try the short yellow spring today. I think the lightest spring in the kit, the white one, may be too light, but I will see.