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Speed-Pro Digital Diamond Profile (DDP) Hypereutectic Pistons H345DCP30

Pistons, Hypereutectic, Flat, 4.030 in. Bore, Chevy, Set of 8

Estimated Ship Date: Today Would you rather pick it up? Select Location

Brand: Speed Pro

Manufacturer's Part Number: H345DCP30

Part Type: Pistons

Product Line: Speed-Pro Digital Diamond Profile (DDP) Hypereutectic Pistons

Summit Racing Part Number: SLP-H345DCP30

Bore (in): 4.030 in.

Bore (mm): 102.362mm

Piston Style: Flat top, with four valve reliefs

Piston Material: Hypereutectic aluminum

Compression Distance (in): 1.548 in.

Piston Head Volume (cc): +6.90cc

Wrist Pin Style: Floating

Pin Diameter (in): 0.927 in.

Piston Ring Thickness: 5/64 in. x 5/64 in. x 3/16 in.

Quantity: Sold as a set of 8.

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.

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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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Make: CHEVROLET

Beginning Year: 1967

Ending Year: 1990

Engine Type: V8

Liter: 5.7

CID: 350

Engine Size: 5.7L/350

Engine Family: Chevy small block Gen I

Rod Length: 5.700 in.

Stroke: 3.480 in.

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1 Customer Reviews for Speed Pro H345DCP30 - Speed-Pro Digital Diamond Profile (DDP) Hypereutectic Pistons

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Watch the Compression Height

Summit RacingSummit Racing Verified Purchase

I ordered two sets of these (Mar 2014), first set was dinged and scratched, second set had pin bores galled from being improperly pressed out of the rods. Neither were 1.56 compression height, they were all 1.548. This means you have to deck your block to restore its factory quench, which may be an issue if your are increasing compression. A real shame because they seem to be a well designed high quality cast piston otherwise. ...read more

1 of 2 found this review helpful.

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Reviewer: ZAK from OR

Date: March 12, 2014

Appearance
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Price/Value
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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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