If you are over 35 PSI (boost or drive pressure) and 3,800 RPM, we suggest going with Hamilton Cams 103lb springs with heat treat and shot peen, for better longevity in extreme applications
Correct valve spring pressure is a very important piece of power production. Hamilton Cams springs at 103 lb spring pressure and 180 lb nose pressure are better than stock. At extreme applications stock springs can cause valve float and reversion.
If you need valve springs and pushrods we also have a package deal from Hamilton Cams for 103lb Valve Springs + Heavy-Duty Pushrods or Extreme Duty Pushrods + a FREE valve spring tool. Please contact customer service to ensure correct fitment on your truck: 216 408 6455**