{"product_id":"dart-31213345-big-m2-pro-chevy-big-block-iron-block-4-250-in-bore-9-800-in-deck","title":"Dart 31213345 - Big M2 Pro Chevy Big Block Iron Block - 4.250 in. Bore, 9.800 in. Deck","description":"\u003cp\u003eDart 31213345 - Big M2 Pro Chevy Big Block Iron Block - 4.250 in. Bore, 9.800 in. Deck\u003c\/p\u003e\u003cp\u003eDart Big M2 Pro Iron Big Block Chevy Blocks\u003c\/p\u003e\u003cp\u003eDart engineered the Big M to be the strongest, most reliable, and easiest to build big block on the market. The Dart Big M2 is designed from the ground up as a true racing engine block which can be used with standard off the shelf big block components. The Big M2 is cast from premium high strength Iron and beefed up in all the critical areas. A competition oiling system ensures adequate lubrication to the main bearings at high RPM.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStandard 9.800, 10.200 and 10.400\" deck heights\u003c\/li\u003e\n\u003cli\u003eStandard 4.250, 4.500, 4.560, or 4.600 bore sizes with siamesed extra thick cylinder walLS2 to resist cracking and improve ring seal (minimum .300 thick with 4.625 bore)\u003c\/li\u003e\n\u003cli\u003eAvailable in .400 raised cam\u003c\/li\u003e\n\u003cli\u003eUses +.300 tall GEN VI style lifters. Modification for MRK IV style available\u003c\/li\u003e\n\u003cli\u003e4-bolt main bearing caps in steel or ductile iron have splayed outer bolts for extra strength\u003c\/li\u003e\n\u003cli\u003eLifter valley head stud bosses help prevent blown head gaskets\u003c\/li\u003e\n\u003cli\u003eEasy to install AN fitting oil gallery plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIndustry\u003c\/strong\u003e: \u003cspan\u003eAutomotive\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCamshaft Location\u003c\/strong\u003e: \u003cspan\u003eRaised 0.400 IN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCylinder Bore Diameter\u003c\/strong\u003e: \u003cspan\u003e4.250\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDeck Height\u003c\/strong\u003e: \u003cspan\u003e9.800\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCamshaft Lifter Bore\u003c\/strong\u003e: \u003cspan\u003e0.842\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMain Bearing Type\u003c\/strong\u003e: \u003cspan\u003eStandard\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMain Cap Type\u003c\/strong\u003e: \u003cspan\u003eSteel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine Type\u003c\/strong\u003e: \u003cspan\u003eICE\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: \u003cspan\u003eEngine Block\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMake\u003c\/strong\u003e: \u003cspan\u003eChevrolet\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine\u003c\/strong\u003e: \u003cspan\u003eBig Block\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMake - Web\u003c\/strong\u003e: \u003cspan\u003eChevrolet\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine - Web\u003c\/strong\u003e: \u003cspan\u003eBig Block\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine Block Series\u003c\/strong\u003e: \u003cspan\u003eBig M2 Pro\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTitle - Web\u003c\/strong\u003e: \u003cspan\u003eBig M2 Pro Chevy Big Block Iron Block - 4.250 in. Bore, 9.800 in. Deck\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCategory Hierarchy\u003c\/strong\u003e: \u003cspan\u003eBlocks\u0026gt;Big Block Chevy\u0026gt;BIG M2 Blocks\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEBAY Category ID\u003c\/strong\u003e: \u003cspan\u003e33613\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dart","offers":[{"title":"Default Title","offer_id":50515730956566,"sku":"BGWK-31213345","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0878\/9782\/files\/0_142a1623-ang135_normalized_99a68215-387e-455d-a191-87099d6e19fd.jpg?v=1777017827","url":"https:\/\/www.cspracing.com\/products\/dart-31213345-big-m2-pro-chevy-big-block-iron-block-4-250-in-bore-9-800-in-deck","provider":"Complete Street Performance","version":"1.0","type":"link"}