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Speed-Pro Digital Diamond Profile (DDP) Hypereutectic Pistons H645ACP30

Pistons, Hypereutectic, Flat, 4.030 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, GM, V6, Set of 6

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Brand: Sealed Power
Manufacturer's Part Number: H645ACP30
Part Type: Pistons
Summit Racing Part Number: SLP-H645ACP30

Bore (in): 4.030 in.
Bore (mm): 102.362mm
Piston Style: Flat top, with four valve reliefs
Piston Material: Hypereutectic aluminum
Compression Distance (in): 1.560 in.
Wrist Pin Style: Press-fit
Pin Diameter (in): 0.928 in.
Piston Ring Thickness: 5/64 in. x 5/64 in. x 3/16 in.
Quantity: Sold as a set of 6.
Notes: DurOshield® coated piston skirt. These pistons can be free floated but locks must be purchased separately.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

These Speed-Pro Digital Diamond Profile (DDP) hypereutectic 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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1 Customer Reviews for Sealed Power H645ACP30 - Speed-Pro Digital Diamond Profile (DDP) Hypereutectic Pistons

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First class service would highly recommend

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Reviewer: GRAEME from Ireland

Date: June 09, 2014

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Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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