monkeystash
Active Member
I was doing some in depth research to see if the hype was all true....and I think it is. By changing to beehive springs and smaller retainers, you can cut valve train weight in half. One dyno test, link below, showed a gain of 65HP at 6000rpms on a hydraulic roller engine after the heavy traditional springs fell off at 5700rpms. WOW! AFR now uses 8mm valves instead of the typical 11/32 valves to also reduce weight, however they don't come with beehives standard. While the majority of people don't spin over 5500rpms, for those who do, this is a cheap way to add some HP. In fact, it is a no-brainer! The beehives cost twice what the standard springs do, about $200 for the springs. I'm currently building a 302 for my Fairlane with RHS180 heads and am going to try out these beehive springs first hand.
http://www.popularhotrodding.com/tech/0607phr_camshaft_basics/photo_32.html
http://www.fordmuscle.com/archives/2007/08/SpringTime/index.php
http://www.popularhotrodding.com/tech/0607phr_camshaft_basics/photo_32.html
http://www.fordmuscle.com/archives/2007/08/SpringTime/index.php