Trick Flow is a business - they are here to make money just like any other business. They ship their heads with "regular" springs because they will do the job and are cheaper. I would be willing to bet they would ship them with behives if they could get them for the same price as a conventional spring.
They are a premium head, not a budget head. They would be using elgin valves and pioneer springs if so.. nut they're using re boxed pac springs as far as I know and better valves.
The automakers tried using beehives and have now for a while with newer engines and there have been more failures/breaking than any other spring before. That said...back to OUR engines.. unless you correct the geometry and use the same lighter weight parts... those beehives will float sooner than later on a mopar and for others too...on their own chevies above 6500rpm. There are countless instances of this all over speed talk and other sites. Yoy have well known saying to use x amount of load...the things ARE floating with more load still. The 4.6 Fords break them, hemis break them and on n on n on. Another one people mention...lighter parts...If the 1.25 chevy springs were bitchin..we would use those as well...but they dont work for us. The amount of defection and harmonics caused by the angles at the top and bottom of the pushrod make them unstable and require more load psi than others..due to the 59 degree lifter bank...
Now are there examples of them working great, sure. Have we checked on those same builds after a season or a few years...let me know. Regardless, they probably weren't with a non corrected shaft mount and mostly pedestal magnums.
They work..sometimes. I don't bank on sometimes.
