{"product_id":"cast-iron-gm-ls1-6-0-engine-block-4-000-bore-9-240-deck-height-6-bolt-mains","title":"Cast Iron GM LS1 6.0 Engine Block, 4.000\" Bore 9.240\" Deck Height, 6-Bolt Mains","description":"\u003cdiv\u003e\n\u003ch2\u003eCast Iron GM LS1 6.0 Engine Block — 4.000\" Bore, 9.240\" Deck Height, 6-Bolt Mains\u003c\/h2\u003e\n\u003cp\u003eElevate your GM LS1 6.0 build with Aeroflow Performance’s Cast Iron LS1 block. This heavy-duty, semi-finished bare block is engineered to be the rock-solid foundation for street-ported or race-inspired combinations, delivering exceptional strength and reliability where it matters most.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Class 32B cast iron construction:\u003c\/strong\u003e chosen for durability under high-performance stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.000\" bore and 9.240\" deck height:\u003c\/strong\u003e designed to maintain a robust seal and work with off-the-shelf components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6-bolt main caps with billet steel main caps:\u003c\/strong\u003e enhanced rigidity and hold-down under high power\/torque scenarios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual knock sensor locations (valley and side):\u003c\/strong\u003e accommodates LS1 or LS2 style knock sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear cam position sensor compatibility:\u003c\/strong\u003e rear valley sensor option that can be blocked to run the front cam sensor only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam journal OD: STD 2.164\" and standard cam location:\u003c\/strong\u003e straightforward assembly with common LS components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVery thick deck height:\u003c\/strong\u003e improves head gasket seal reliability and supports standard components such as camshaft, timing chain, oil pump\/pan, and oil filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil system compatibility:\u003c\/strong\u003e Oil filter STD; Oil pan STD; Timing cover STD; Timing chain\/gears STD.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 110 kg (242 lbs.)—solid mass and rigidity to reduce flex during high-RPM operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial number location:\u003c\/strong\u003e Left Front \u0026amp; Main Caps for straightforward identification and traceability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePickup available for local buyers:\u003c\/strong\u003e contact for shipping quote if needed.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eProfessional machining and assembly notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis block is designed as a semi-finished bare engine block that requires professional finish machining.\u003c\/li\u003e\n\u003cli\u003eSizes referenced (deck height, bore, wall thickness, etc.) are nominal and within factory tolerances, with tighter tolerances possible when applicable.\u003c\/li\u003e\n\u003cli\u003eThe block must be finished by a skilled machine shop to meet your specific component clearances.\u003c\/li\u003e\n\u003cli\u003eCam bearing OD should be deburred before installation; when removing main caps, deburr the caps and block before re-installation to maintain correct main size.\u003c\/li\u003e\n\u003cli\u003eCylinder bores will often require honing to achieve proper skirt clearance for oversized pistons; many aftermarket components are not drop-in without additional machining.\u003c\/li\u003e\n\u003cli\u003eAssembling with this block should be performed by an experienced engine builder to ensure reliable performance and proper tolerances across all systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal starting point for high-performance LS builds, this block serves as a robust foundation for street-performance and track-savvy applications. A fresh, heavy-duty alternative to aging production blocks, it provides a solid platform ready for professional finish machining and precision assembly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"TGM Performance Parts","offers":[{"title":"Default Title","offer_id":47471763849386,"sku":"AF96-1020","price":3442.2,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7829\/4698\/files\/AF96-1020.jpg?v=1759108925","url":"https:\/\/tgmperformance.com.au\/products\/cast-iron-gm-ls1-6-0-engine-block-4-000-bore-9-240-deck-height-6-bolt-mains","provider":"TGM Performance Parts","version":"1.0","type":"link"}