{"product_id":"speed-pro-sph661cp030-454-ci-bb-chev-flat-top-hypereutectic-pistons","title":"Speed Pro SPH661CP030 454 Ci BB Chev - Flat Top Hypereutectic Pistons","description":"\u003cp\u003eThese ruggedly durable pistons are made with exclusive high strength FM425 alloy, and enhanced with 16.5% silicon for excellent tensile strength and scuff resistance. This advanced metallurgy permits tighter bore clearances, which help minimise noise on cold engine start-up. These pistons are the ideal choice for street performance applications and late-model replacement.\u003c\/p\u003e  \u003cul\u003e  \u003cli\u003eMore Sealed Power hypereutectics benefits:\u003c\/li\u003e  \u003cli\u003eHigher strength than cast or forged at operating temperature\u003c\/li\u003e  \u003cli\u003eFinely dispersed silicon particles provide a highly resistant wear surface and reduces scuffing\u003c\/li\u003e  \u003cli\u003eLower material growth allows pistons to be fit tighter, improving cylinder sealing for less blow-by and more power\u003c\/li\u003e  \u003cli\u003eHigh silicon content allows elimination of groove inserts in certain applications\u003c\/li\u003e  \u003cli\u003eDesigned to retain standardring gaps in the top groove\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003ePiston Specifications :\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e  \u003cli\u003eCID: 461\u003c\/li\u003e  \u003cli\u003eBore: 4.155\u003c\/li\u003e  \u003cli\u003eStroke: 4.000\u003c\/li\u003e  \u003cli\u003eRod Length: 6.135\u003c\/li\u003e  \u003cli\u003eCompression Height: 1.615\u003c\/li\u003e  \u003cli\u003eCompression Ratio with 100cc chamber volume: 8.88\u003c\/li\u003e  \u003cli\u003eCompression Ratio with 117cc chamber volume: 7.95\u003c\/li\u003e  \u003cli\u003eCompression Ratio with 124cc chamber volume: 7.60\u003c\/li\u003e  \u003cli\u003eDome Volume: -2.0cc\u003c\/li\u003e  \u003cli\u003ePin Type: Press Or Float\u003c\/li\u003e  \u003cli\u003eRecommended Ring Set: Moly - SPE233K 030, STD Fit - SPR9905 030, File Fit - SPR9590 035\u003c\/li\u003e  \u003cli\u003eCoated piston\u003c\/li\u003e \u003c\/ul\u003e \u003cbr\u003e\u003cbr\u003e","brand":"Speed Pro","offers":[{"title":"Default Title","offer_id":44535324246327,"sku":"SPH661CP030","price":392.4,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/9364\/1015\/files\/207845.jpg?v=1780422962","url":"https:\/\/enginemaster.com.au\/products\/speed-pro-sph661cp030-454-ci-bb-chev-flat-top-hypereutectic-pistons","provider":"Engine Master","version":"1.0","type":"link"}