Performance Diesel and Performance Gas machine shop   Custom oversize valves available for Cummins, Duramax, and Powerstroke
       409 West Adams Avenue   Riverton, Wyoming 82501   (307) 463-0117 
Cummins Block Operations:
  • -Block re-boring for oversize pistons or  modified clearances.
  • -Cylinder sleeve installation for repair of damaged cylinders.
  • -Resurfacing.
  • -Magnafluxing.
  • -Pressure testing.
  • -Crack Repair.
  • -CNC Fire Ring Groove machining.
  • -"O" ring groove machining.
  • -Head bolt hole enlargement and tapping for 14 MM head studs.