{"product_id":"cast-iron-engine-block-4-125-bore","title":"Cast Iron Engine Block, 4.125\" Bore","description":"The Summit Racing SPC Pro LS Block is a new, heavy-duty aftermarket V8 engine block engineered for street, performance, and competition applications. Cast in Germany at a Tier 1 OEM foundry using brand new molds, it is constructed from Class 35 iron alloy, offering higher tensile strength and hardness than competitors' Class 30 iron.\n\nThis bare engine block features a standard deck height of 9.240 inches and an initial cylinder bore of 4.125 inches. The bores are intentionally shipped 0.005 inches undersize to allow for proper honing to achieve precise piston-to-wall clearance. It is designed with a 6-bolt main bolt style and a 6-head bolt pattern, suitable for Gen III\/IV LS Chevrolet engines. The block includes nodular iron main caps with fasteners and is designed for a 1-piece rear main seal. Its priority main oiling system and Siamese cylinder bores contribute to robust performance.","brand":"Summit Racing","offers":[{"title":"Default Title","offer_id":52689405575480,"sku":"SUM-150216","price":3313.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687718999.jpg?v=1784906306","url":"https:\/\/store.motormia.co\/products\/cast-iron-engine-block-4-125-bore","provider":"MOTORMIA","version":"1.0","type":"link"}