{"product_id":"lt1-312cc-6-bolt-cnc-cylinder-head","title":"LT1 312cc 6-Bolt CNC Cylinder Head","description":"The Precision Race Components (PRC) LT1 CNC cylinder heads are engineered for maximum performance in LT-based engine applications. These heads boast a 312cc intake port volume and utilize substantial valves: a 2.165\" stainless hollow stem intake valve and a 1.600\" stainless exhaust valve. The combustion chambers measure 58cc.\n\nBuilt with robust components, these cylinder heads include a TSP .660 spring kit featuring PAC valve springs and titanium retainers, along with CHE bronze guides for superior valve operation. They are constructed from aluminum with a thicker deck surface, designed as a 6-bolt configuration to work with both standard GM 4-bolt and aftermarket LT 6-bolt engine blocks. The entire assembly is completed in the USA, with casting and machining also performed domestically.\n\nExtensive CNC porting and dyno testing have culminated in the development of these cylinder heads, which are described as among the most powerful LT-based options available. However, it is explicitly stated that these heads are for 'Competition Use Only, Not Legal for Road Use'.","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":52663326540088,"sku":"199-SSPRCLT1","price":3083.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687528037.png?v=1784325971","url":"https:\/\/store.motormia.co\/products\/lt1-312cc-6-bolt-cnc-cylinder-head","provider":"MOTORMIA","version":"1.0","type":"link"}