{"product_id":"lingenfelter-ls7-aluminum-cylinder-heads","title":"Lingenfelter LS7 Aluminum Cylinder Heads","description":"The Lingenfelter CNC Ported LS7 C6 Z06 Corvette Cylinder Heads - Pair are a performance upgrade designed for the LS7 engine. These cylinder heads feature CNC-ported intake ports with a 272 CC volume and exhaust ports with a 90 CC volume. The heads are equipped with stock GM LS7 2.205-inch titanium intake valves and LS7 1.615-inch hollow-stemmed sodium-filled exhaust valves. Each head undergoes a precision 3-angle valve job to maximize flow and extend life, with chamber size CC'd for correct compression and surfacing for deck flatness. Professional assembly includes setting spring height and checking all tolerances. The base package includes porting your complete customer-supplied cylinder heads. Optional upgrades include Lingenfelter double springs, titanium retainers, and locks for enhanced performance, especially when paired with Lingenfelter GT-19 or GT-21 camshafts. Valve guide replacement is available for $9.50 per guide if needed. These heads are the same as used in Lingenfelter's 630 and 660 horsepower C6 Z06 packages.","brand":"Lingenfelter Performance Engineering","offers":[{"title":"Default Title","offer_id":52686626357560,"sku":"LS7CNC","price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/657807367.png?v=1784875428","url":"https:\/\/store.motormia.co\/products\/lingenfelter-ls7-aluminum-cylinder-heads","provider":"MOTORMIA","version":"1.0","type":"link"}