{"product_id":"how-to-build-modify-power-tune-cylinder-heads-9781903706763","title":"How to Build  Modify \u0026 Power Tune Cylinder Heads","description":"\u003cp\u003eThe complete practical guide to successfully modifying classic\/retro 2-valve per combustion chamber cylinder heads for maximum power  economy and reliability.? Understandable language and step-by-step instruction. Topics include horsepower and torque; equipment and tools; airflow  building a flow bench; porting; valves; valve seats and inserts; valve guides; valve springs; unleaded fuel conversion. Written by two expert engineers  who share their extensive knowledge and experience to explain everything you need to know about building  modifying and power tuning cylinder heads.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":45666107949109,"sku":"ByrdShop_1903706769","price":87.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8139\/0901\/files\/9781903706763.jpg?v=1782419940","url":"https:\/\/atxbooks.com\/products\/how-to-build-modify-power-tune-cylinder-heads-9781903706763","provider":"ATX Books","version":"1.0","type":"link"}