How & Why - 7.3L Powerstroke Valve Train Upgrades
Posted by Robert Breedlove on 7/26/2019 to
To maintain the correct valve operation all of the valve springs must exert a certain amount of spring pressure. If they a low or weak they may cause the valves to not completely seal or float at higher RPM. Choosing the correct Valve Spring or Pushrod upgrades depends on...
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