I am usually pretty good with keeping track of things, but my little piece of paper disapeared. The one that comes with the Holley vacuum secondary spring kits. I want to know what Holley says is the RPM range for each of the seven springs. I couldnt find a diagram on holleys site, could someone tell me where to look, or possibly find their instructions that came with the kit and type them on here? Thanks alot

nevermind....

.....SECONDARY DIAPHRAGM SPRING KIT . Secondary Throttle Operating Ranges
Color Relative
Load 350 CID ENG.
Opening RPM 402 CID ENG.
Opening RPM
. Initial Full Initial Full
White Lightest - - - -
Yellow** Lighter 1620 5680 1410 4960
Yellow Light 1635 5750 1420 5020
Purple Med. Light 1915 6950 1680 6050
Plain Medium 2240 8160 1960 7130
Brown Med. Heavy 2710 8750 2380 7650
Black Heavy 2720 Not Fully Open 2390 Not Fully Open

i think that Summitt tech line could help you with that. Or the holley tech line too. Try Summitt now they are open 24/7 like 7/11