{"product_id":"sealed-powercast-piston-16","title":"Sealed Power H661CP60 Hypereutectic Piston Set — Fits Big Block Chevy 4.310 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\u003ch2\u003eHigh-Quality 4.310 Bore Hypereutectic Pistons\u003c\/h2\u003e\u003cp\u003eWhen it comes to rebuilding a Big Block Chevy, precision is everything. The Sealed Power H661CP60 piston set is designed for engines requiring a 4.310-inch bore, offering a perfect solution for block boring and refurbishment. These hypereutectic pistons are manufactured with a high silicon content, which provides superior strength and reduced thermal expansion compared to traditional cast pistons. The added skirt coating ensures that your engine runs smoothly, reducing the risk of scuffing during the critical break-in period.\u003c\/p\u003e\u003ch3\u003eKey Advantages\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Fit:\u003c\/strong\u003e Designed for 4.310 bore applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Material:\u003c\/strong\u003e Hypereutectic alloy for increased durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Coating:\u003c\/strong\u003e Skirt coating minimizes friction and wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Ring Grooves:\u003c\/strong\u003e Compatible with common ring sets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDish Design:\u003c\/strong\u003e Minus 2.00 cc for consistent compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Set:\u003c\/strong\u003e Includes 8 high-performance pistons.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy choosing Sealed Power, you are investing in decades of engineering excellence. These pistons are built to handle the demands of modern street driving while maintaining the classic character of your Big Block Chevy. The H661CP60 set is ideal for builders who need a reliable, cost-effective way to refresh their engine's internals without sacrificing quality. Whether you are a weekend warrior or a dedicated restorer, these pistons will help you achieve the performance goals you have set for your vehicle. Find all your engine building essentials at GGCRACING.\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 H661CP60 Hypereutectic Piston Set \\u2014 Fits Big Block Chevy 4.310 Bore\",\"description\":\"Restore your Big Block Chevy with Sealed Power H661CP60 pistons. 4.310 bore, hypereutectic construction, and coated skirts. Buy now at GGCRACING!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Sealed Power\"},\"mpn\":\"H661CP60\",\"url\":\"https:\/\/ggcracing.com\/products\/sealed-powercast-piston-16\",\"offers\":{\"@type\":\"Offer\",\"price\":\"209.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/sealed-powercast-piston-16\",\"sku\":\"BDBR_H661CP60\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Sealed Power\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Sealed+Power\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Sealed Power H661CP60 Hypereutectic Piston Set \\u2014 Fits Big Block Chevy 4.310 Bore\",\"item\":\"https:\/\/ggcracing.com\/products\/sealed-powercast-piston-16\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Sealed Power H661CP60 Hypereutectic Piston Set \\u2014 Fits Big Block Chevy 4.310 Bore fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. 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 H661CP60 Hypereutectic Piston Set \\u2014 Fits Big Block Chevy 4.310 Bore?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Sealed Power","offers":[{"title":"Default Title","offer_id":41068392808532,"sku":"BDBR_H661CP60","price":209.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/SEAH661CP60.jpg?v=1716770360","url":"https:\/\/ggcracing.com\/en-co\/products\/sealed-powercast-piston-16","provider":"GGCRACING INC","version":"1.0","type":"link"}