{"product_id":"cast-iron-s-b-chev-engine-block-4-000-bore-9-025-deck-height-350-mains","title":"Cast Iron S\/B Chev Engine Block, 4.000\" Bore 9.025\" Deck Height, 350 Mains","description":"\u003cdiv\u003e\n\u003cp\u003eElevate a Chevy small-block build with Aeroflow Performance’s Cast Iron Small-Block Chevy Engine Block. Crafted from premium Class 32B iron, this brand-new, heavy-duty block is designed to handle street performance and light competition applications. It blends rugged strength with practical compatibility, delivering a foundation you can trust for demanding builds.\u003c\/p\u003e \u003cp\u003eKey features include siamese cylinder bores and four-bolt billet steel main caps with a deep stepped register, delivering exceptional strength and stability under higher cylinder pressures. The priority main oiling system directs lubrication to the mains first, boosting reliability during spirited driving and competitive use. An extra-thick deck height improves head gasket seal and accommodates standard off-the-shelf components while maintaining robust performance.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eChevy Small Block (S\/B Chev) cast iron engine block\u003c\/li\u003e \u003cli\u003eBore: 4.000\" (cylinder bore diameter)\u003c\/li\u003e \u003cli\u003eDeck height: 9.025\"\u003c\/li\u003e \u003cli\u003e350 mains, 4-bolt billet steel splayed main caps with deep stepped register\u003c\/li\u003e \u003cli\u003eCylinder bore diameter: 4.000\"\u003c\/li\u003e \u003cli\u003eMax bore \u0026amp; stroke: 4.185\" × 4.000\"\u003c\/li\u003e \u003cli\u003eCam journal OD: STD 1.869\"\u003c\/li\u003e \u003cli\u003eCam plug: 2.375\" press-in cup\u003c\/li\u003e \u003cli\u003eCam location: STD\u003c\/li\u003e \u003cli\u003eCylinder wall thickness:.275\" (min at 4.185\" bore)\u003c\/li\u003e \u003cli\u003eDeck thickness:.675\"\u003c\/li\u003e \u003cli\u003eMin fuel pump: STD mechanical provision\u003c\/li\u003e \u003cli\u003eFuel pump pushrod: STD\u003c\/li\u003e \u003cli\u003eFreeze plugs: 10 x 1-5\/8\" press-in\u003c\/li\u003e \u003cli\u003eLifter bores:.842\" diameter\u003c\/li\u003e \u003cli\u003eMain bearing size: 2.450\" (350)\u003c\/li\u003e \u003cli\u003eMain bearing bore: 2.649\" (350)\u003c\/li\u003e \u003cli\u003eMain cap bolts: 7\/16\" \u0026amp; 3\/8\" on caps 1 \u0026amp; 5, 7\/16\" on caps 2–4 (splayed)\u003c\/li\u003e \u003cli\u003eMain caps: Billet steel, 3 center caps\u003c\/li\u003e \u003cli\u003eMain cap register: Deep stepped (no dowels required)\u003c\/li\u003e \u003cli\u003eOil system: Main priority oiling (can use dry sump)\u003c\/li\u003e \u003cli\u003eOil pump shaft:.481\" standard (350)\u003c\/li\u003e \u003cli\u003eOil filter: STD, uses 2-bolt adapter\u003c\/li\u003e \u003cli\u003eOil pan: STD 350\u003c\/li\u003e \u003cli\u003eRear main seal: STD 350 2-piece\u003c\/li\u003e \u003cli\u003eSerial number location: Left front \u0026amp; main caps\u003c\/li\u003e \u003cli\u003eStarter: STD stud holes, head: blind holes\u003c\/li\u003e \u003cli\u003eTiming chain\/gears: STD\u003c\/li\u003e \u003cli\u003eTiming cover: STD\u003c\/li\u003e \u003cli\u003eWeight: 92 kg (205 lbs)\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this block fits your build\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eHeavy-duty cast iron foundation: Reliable, durable performance for street-driven and light-competition scenarios.\u003c\/li\u003e \u003cli\u003eSiamese bores with billet splayed caps: Provides enhanced resistance to cap walk under high-pressure operation.\u003c\/li\u003e \u003cli\u003eDeep deck and.675\" deck thickness: Promotes a solid, dependable head gasket seal and compatibility with off-the-shelf components.\u003c\/li\u003e \u003cli\u003ePriority mains lubrication: Helps maintain bearing life when pushing higher outputs.\u003c\/li\u003e \u003cli\u003eSemi-finished bare block: Reduces machining time while acknowledging that final fitment requires professional finish machining and precise measurement for your components.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eMachining, assembly, and installation\u003c\/h3\u003e\n\u003cp\u003eThis block must be professionally finished to achieve optimal performance. Because tolerances vary and many parameters require tailored machining, assembly by an experienced, professional engine builder is strongly recommended.\u003c\/p\u003e \u003cp\u003eWith its classic cast-iron backbone, this block provides a cost-effective yet capable platform for Chevy small-block enthusiasts who demand reliability without sacrificing performance. Whether you’re building a street-ready cruiser or dialing in a light-competition setup, this block offers a robust foundation designed to grow with your components.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"TGM Performance Parts","offers":[{"title":"Default Title","offer_id":47471747924138,"sku":"AF96-1000","price":2722.9,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7829\/4698\/files\/AF96-1000_2.jpg?v=1759108232","url":"https:\/\/tgmperformance.com.au\/products\/cast-iron-s-b-chev-engine-block-4-000-bore-9-025-deck-height-350-mains","provider":"TGM Performance Parts","version":"1.0","type":"link"}