07-S-003 Hamilton Cams 103lb Valve Springs 1998.5 - 2015 Cummins

  • 1998.5 - 2015 Cummins
  • 103lb
  • Works with Stock or Aftermarket Cams
  • Works with Stock and High Performance Applications
  • Complete Set
SKU: HAM07-S-003
Hamilton Cams

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Hamilton Cams 103lb springs are a great upgrade for your upgraded 1998.5 to 2015 Cummins. If you are over 50psi (boost or drive presure) and 3,800 rpm, stock springs do not fully control the valvetrain. This allows a few negative things to happen. First, valve float, which can cause serious damage to the valvetrain. Second, intake and exhaust valves can be blown open by boost and exhaust drive pressure which allows reversion. Reversion can hurt your power potential by allowing exhaust gasses to enter the cylinder on the intake stroke.This does a few things that negatively affect power. It increases the time delay from start of injection to start of combustion, it decreases the maximum pressure and maximum temperature reached in the cylinder and it increases the total time needed to completely burn the available fuel. Correct valve spring pressure is a very important piece of power production. If you are running a tuner on an otherwise stock truck with a VGT charger, based on exhaust drive pressure, you need these.

We suggest this spring upgrade if you are over 50lbs. of boost or drive pressure, turningover 3800 rpm, or when running aftermarket camshafts.

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Customer Reviews (1)

Control your valvesReview by ATP Staff - Mike Dorsey
Increased boost and RPM can cause valve float. These springs will prevent inefficient and dangerous valve float with stock or mild cams.The mild seat pressure is easy on the valvetrain components. (Posted on 12/27/2016)

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