{"product_id":"callies-mopar-engine-blocks-68166434ad-mskit-cpi-s0035","title":"Callies Mopar Gen III Cast Iron Engine Block w\/ OptiTorque Main Stud Kit: Fits most Hemi Models","description":"\u003ch3\u003eCallies Mopar Gen III Cast Iron Engine Block\u003c\/h3\u003e\u003cp\u003e2005–Present Chrysler \/ Dodge \/ Jeep \/ Ram 5.7L Hemi \/ 6.1L SRT8 \/ 6.4L 392 \/ 6.2L Hellcat \u0026amp; Trackhawk\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eS0035\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Callies Mopar Gen III Cast Iron Engine Block with OptiTorque Main Stud Kit is a premium replacement block designed for high-performance Mopar Hemi engines. Engineered to accommodate the 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat \u0026amp; Trackhawk powerplants, this block offers a robust foundation for engine builds requiring durability and precision. Ideal for enthusiasts and professional builders alike, it ensures reliable strength and longevity under demanding conditions.\u003c\/p\u003e\u003cp\u003eFeaturing a cast iron construction and OEM deck height, this block maintains factory specifications while enhancing structural integrity. The included OptiTorque main stud kit provides superior clamping force for the main caps, improving bottom-end stability and reducing the risk of failure during high-stress operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis Mopar Gen III engine block combines quality materials and thoughtful engineering to meet the needs of performance builders:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast iron block material for exceptional strength and durability\u003c\/li\u003e\n\u003cli\u003eOEM deck height of 9.250 inches to maintain factory geometry\u003c\/li\u003e\n\u003cli\u003eFinished cylinder bores with a 4.100-inch bore size as shipped, ready for final honing\u003c\/li\u003e\n\u003cli\u003eStandard camshaft location compatible with Gen III Hemi configurations\u003c\/li\u003e\n\u003cli\u003eBillet steel main caps included for enhanced rigidity\u003c\/li\u003e\n\u003cli\u003eOptiTorque main stud kit included for superior main cap fastening\u003c\/li\u003e\n\u003cli\u003eOne-piece rear main seal style for reliable sealing and ease of installation\u003c\/li\u003e\n\u003cli\u003eMain cap fasteners included to ensure proper assembly\u003c\/li\u003e\n\u003cli\u003eSold individually, allowing for flexible build options\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe engine block is crafted from high-grade cast iron, chosen for its excellent wear resistance and ability to withstand high combustion pressures. The block’s OEM deck height preserves the original engine geometry, ensuring compatibility with existing components and minimizing the need for custom modifications.\u003c\/p\u003e\u003cp\u003eBillet steel main caps provide a significant upgrade over stock cast caps, offering improved strength and durability to handle increased horsepower and torque. The OptiTorque main stud kit enhances main cap retention, reducing the likelihood of cap walk or loosening under extreme loads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis engine block is designed as a direct replacement for Mopar Gen III Hemi engines, including 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat \u0026amp; Trackhawk applications. It fits factory engine bays without modification, making it suitable for rebuilds or performance upgrades.\u003c\/p\u003e\u003cp\u003eWhile the block comes with finished cylinder bores, final honing and machining may be required to meet specific build tolerances. Main bearings, cam bearings, and freeze plugs are not included and must be sourced separately. Professional installation is recommended to ensure optimal assembly and performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCallies Mopar Gen III Cast Iron Engine Block\u003c\/li\u003e\n\u003cli\u003eBillet steel main caps\u003c\/li\u003e\n\u003cli\u003eOptiTorque main stud kit\u003c\/li\u003e\n\u003cli\u003eMain cap fasteners\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis engine block is perfect for Mopar enthusiasts and professional engine builders seeking a durable, high-quality foundation for performance or restoration projects. It is especially suited for those upgrading or rebuilding 5.7L Hemi, 6.1L SRT8, 6.4L 392, or 6.2L Hellcat \u0026amp; Trackhawk engines who require enhanced bottom-end strength and reliability.\u003c\/p\u003e","brand":"Callies","offers":[{"title":"Default Title","offer_id":47379541426388,"sku":"S0035","price":2202.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/4687_cpi-s0035_xl_a6f8400d-e49f-4a09-b4d8-f310fa8aa057.webp?v=1766655020","url":"https:\/\/fasthemis.com\/products\/callies-mopar-engine-blocks-68166434ad-mskit-cpi-s0035","provider":"FastHemis","version":"1.0","type":"link"}