Sealed Power Digital Diamond Profiled™Pistons are perfect for engine builders looking for ways to build a cleaner-burning, longer-lasting vintage Chevy SB engine. This advanced piston technology lets rebuilders equip this popular engine with the ultimate in modern piston materials and engineering – while still keeping that classic engine “classic.” Sealed Power

DDP Pistons feature:

 DDP Technology: Digital actuated diamond turning process produces precision skirt profiles.

  • Barrel profile: Creates an oil wedge between the skirt and cylinder wall.
  • Thermal Arching Compensation (TAC) Ring Groove Geometry: Machined uptilt offsets thermal “arching” distortion; squares the ring face to the cylinder.
  • Next generation DUROSHIELD coating: Reduces friction and wear.
  • Precision-machined pin bores: Accommodate fixed or floating wrist pin installation.
  • Can be used as full floating assembly. You must purchase 16 of LR63 lock rings. 


Ring dimensions 5/64, 5/64, 3/16
Flat Top; 4 valve reliefs
Compression dist 1.548
Bore Size: 4.00"