Quote Originally Posted by DennyW
Not sure what you mean by: ((Yeah, and pounds the heck out of your valvetrain. No thanks.))
The seat pressure on these springs is 150+ lbs (don't recall the exact number) as they come on the Holley heads. Stock I believe is much lower. Therefore it is my feeling (wrong maybe) that the excess force puts added stress on the valvetrain components. Specifically increased friction and force on the pushrod, increased force on the lifters, and on the cam lobs, and increased force on the valves seating.

I don't like having all that extra stress compared to stock. Correct me here if I am wrong.