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Sealed Power Z8KH423ACP30 - Speed-Pro Digital Diamond Profile (DDP) Hypereutectic Piston and Ring Kits

  • Piston and Ring Kit, Hypereutectic, Dish, 4.030 in. Bore, Chevy, Kit
  • Application Specific
  • Estimated Ship Date: 5/29/2012
 
BrandSealed Power
Manufacturer's Part NumberZ8KH423ACP30
Part TypePiston and Ring Kits
Product LineSpeed-Pro Digital Diamond Profile (DDP) Hypereutectic Piston and Ring Kits
Summit Racing Part NumberSLP-8KH423ACP30
 
Bore (in)4.030 in.
Bore (mm)102.362mm
Piston StyleDish, with four valve reliefs
Piston MaterialHypereutectic aluminum
Compression Distance (in)1.540 in.
Piston Head Volume (cc)+10.00cc
Wrist Pin StylePress-fit
Pin Diameter (in)0.927 in.
GaplessNo
File FitNo
Top Ring Thickness5/64 in.
Top Ring MaterialIron
Top Ring Facing MaterialMoly
Second Ring Thickness5/64 in.
Second Ring MaterialIron
Second Ring Facing MaterialCast iron
Oil Ring Thickness3/16 in.
Oil Ring MaterialStainless steel
Oil Ring TensionStandard
QuantitySold as a kit.
NotesDurOshield® coated piston skirt. Recessed head is 0.070 inch deep. These pistons can be free floated but locks must be purchased separately.
 

These Speed-Pro Digital Diamond Profile (DDP) hypereutectic piston and ring kits include hypereutectic pistons and a set of matching moly-faced piston rings. The pistons feature a new digital actuated diamond turning process that produces precision skirt profiles. This new Digital Diamond Profile (DDP) technology creates a unique barrel profile of the pistons, promoting an oil wedge between the piston skirt and the cylinder wall. They feature a newly designed ring groove geometry using Thermal Arching Compensation (TAC) that machines the piston ring grooves with an uptilt to offset thermal arching distortion. This squares the ring face up to the cylinder wall for increased power and decreased oil consumption. The Speed-Pro Digital Diamond Profile hypereutectic pistons feature the next generation of Duroshield skirt coating, reducing friction across the entire rpm range and increasing wear resistance for longer life and superior noise and vibration reduction. They also use precision-machined piston pin bores that allow for either fixed or floating wrist pins. The pistons come weight-matched to a 4 gram (+/-2 grams) maximum variation within every engine set.

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