{"product_id":"sealed-powercast-piston-12","title":"Sealed Power Hypereutectic Cast Piston Set — Fits Big Block Chevy 4.280in Bore","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Sealed Power\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eSealed Power engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Sealed Power lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/ZfFZz1uYIrs\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eHigh-Performance Sealed Power Pistons for Big Block Chevy\u003c\/h2\u003e\u003cp\u003eRevitalize your engine build with the Sealed Power Hypereutectic Cast Piston Set, specifically engineered for Big Block Chevy applications. These pistons are designed to offer superior strength and thermal stability compared to standard cast units, making them an excellent choice for street performance and mild racing builds. With a 4.280-inch bore and precision-machined ring grooves, these pistons ensure optimal sealing and compression for maximum power output.\u003c\/p\u003e\u003ch3\u003eTechnical Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Big Block Chevy (BBC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Size:\u003c\/strong\u003e 4.280 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Grooves:\u003c\/strong\u003e 5\/64 x 5\/64 x 3\/16 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e Plus 33.00 cc dish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Hypereutectic cast alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkirt:\u003c\/strong\u003e Specialized coating for reduced friction\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe hypereutectic alloy composition provides a lower coefficient of thermal expansion, allowing for tighter piston-to-wall clearances. This results in quieter operation and improved ring seal, which translates to better oil control and increased horsepower. The inclusion of a coated skirt further minimizes friction and prevents scuffing during the critical break-in period. Whether you are performing a full engine overhaul or a performance refresh, these Sealed Power pistons provide the reliability and consistency required for high-torque applications. Trust GGCRACING for your engine internal needs.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Sealed Power products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/speed-pro-performance-2015-x3009-r1006\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power Speed Pro Performance Street Catalog – 2015 Edition\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/cam-bearing-set-36\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power Cam Bearing Set Standard Journal — Fits Small Block Chevy V8\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/main-bearing-spacer-set\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power Main Bearing Spacer Set Standard — Fits 351C Crank in SBF\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/rod-bearing-171\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power 1555CPA10 Connecting Rod Bearing - 0.010 in Undersize - Pontiac V8\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/rod-bearing-172\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power Rod Bearing 0.020 Undersize — Fits Pontiac V8 Engines\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Sealed Power Hypereutectic Cast Piston Set \\u2014 Fits Big Block Chevy 4.280in Bore\",\"description\":\"Restore your Big Block Chevy performance with Sealed Power hypereutectic pistons. 4.280in bore, coated skirts, and high durability. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Sealed Power?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Sealed Power Hypereutectic Cast Piston Set \\u2014 Fits Big Block Chevy 4.280in Bore?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most plug-and-play LED upgrades take 15-30 minutes per side. Full retrofits or harness installs may require additional wiring.\"}}]}\u003c\/script\u003e","brand":"Sealed Power","offers":[{"title":"Default Title","offer_id":41068391366740,"sku":"BDBR_H581CP30","price":583.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/SEAH581CP30.jpg?v=1716770189","url":"https:\/\/ggcracing.com\/en-co\/products\/sealed-powercast-piston-12","provider":"GGCRACING INC","version":"1.0","type":"link"}