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Speed-Pro Hypereutectic Pistons H631CP30

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Pistons, Hypereutectic, Flat, 4.030 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Set of 8

Estimated Ship Date: Monday 3/2/2015 Would you rather pick it up? Select Location

  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight fees. Valid on orders shipped in the contiguous United States.

Brand: Speed Pro

Manufacturer's Part Number: H631CP30

Part Type: Pistons

Product Line: Speed-Pro Hypereutectic Pistons

Summit Racing Part Number: SLP-H631CP30

UPC: 614046228801

Bore (in): 4.030 in.

Bore (mm): 102.362mm

Piston Style: Flat top, with two valve reliefs

Piston Material: Hypereutectic aluminum

Compression Distance (in): 1.560 in.

Piston Head Volume (cc): +5.00cc

Wrist Pin Style: Press-fit or floating

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 8.

Notes: DurOshield® coated piston skirt.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

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Tool Stroker Combinations

If you're looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from FM244 aluminum alloy, which contains 16 percent silicon for greater strength and wear resistance. They're also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that today's top engine builders demand. They're ideal for use in high performance street, bracket racing, and oval track racing and will work perfectly with normal ring end gaps.

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2 Customer Reviews for Speed Pro H631CP30 - Speed-Pro Hypereutectic Pistons

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I built a 4.3L Chevy six using Eagle H-Beam rods. Because of the floating pins and the V6 crank design requiring a shorter skirt piston (to clear the counter weights), this was the only piston I could use out-of-the-box. 5000 miles on the Little Black Truck and no issues yet. (knock on wood) Because the compression is 9.96:1, my plans for a turbo went out the window. (I'm a Buick guy, so sixes don't seem right without a turbo.) Good piston though. Nice that the floating pins allow me to tear down without pressing them out. I'm not sure what to do with the extra two pistons. Spares? ...read more

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Reviewer: MICAH from KS

Date: January 01, 2015

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Speed-Pro Hypereutectic Pistons H631CP30

Summit RacingSummit Racing Verified Purchase

worked perfect, nice pistons, 8.75 comp with 76cc heads. the skirt coating is nice.

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Reviewer: RUSSELL from CT

Date: October 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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