JAC Could you fill in the story a little better. I have be running Beehives for 4 years. I also am a Chevy and GM master tech for over 25+ years. When Beehives came out in the begining there was some bottom spring breakage. In the last 10 years I have seen only 2 broken. 1 motor had 210,000 miles on it and no
oil pressure to the upper end. The other is a putz with a ZO6 supercharger motor. He breaks, trannies( 3rd ) rearends (2) and the motor has been replaced (1). Rear tires replace every 3,800- 4,000 miles. He is on the 4th clutch. He is running a SPEC one. If you are running hard and banging the rev limiter you can break valve springs. I limit my motor to 6,200 rpms because of the 26120# beehive have a limit of .600" total lift. My cam is a .587"-.607" hydro roller. Motor is a 482. This is another reason for limit of rpms. If you over rev the valve train and cause float, something is going to break. You may want to look at PAC valve springs. They are a little stronger than Comps are. Was this motor just rebuilt?? Where the heads and block machined to true up the surfaces? How large is the cam shaft? 80% of motor breakage, IMO is from not matching parts for an rpm range and over extending them beyond there limits. Up to 6,500 rpms beehive work great. After this and at 7,400 rpms in an LS2 motor they are all done with controlling of the valve train. The only advantage of dual springs or with a dampener inside the main spring is if the main spring breaks there is a good chance that the dampener spring will save the valve from hitting the piston and doing major damage. The only thing that is different between beehive and normal springs is the look and how they control harmonics at high rpms. I did pick up 12 hp on a dyno with these springs at 6,000 rpms. This was more to do with valve control with a hydro camshaft. I also lost 300 rpms because of going to Erson rockers that wieght more that a stock FE rocker. I am working on a lighter valve train and other tricks to increase rpms without valve floating. Rick L.