{"product_id":"edelbrock-60139","title":"Edelbrock Cyl Head Perf RPM AMC 290 304 343 360 390 401 V-8 w\/ Mach Exhst X-Over Complete","description":"\u003cp\u003eThe Edelbrock #60139 Performer RPM cylinder head is designed as a bolt-on performance upgrade for any 1967-91 AMX, Javelin or Jeep with a 343, 360, 390 or 401 AMC V8 engine. They include adjustable rocker studs and guide plates set-up for use with small-block Ford style adjustable 1.6:1 ratio rockers. The intake flange is dual-drilled to accommodate early and late model intake bolt patterns, covering 1967-91. A Complete head includes larger than- stock valve springs to handle most high-lift cams. They feature stock location ports for compatibility with standard manifolds and headers. A direct bolt-on for 1970 and later engines with 1\/2\" head bolts, This head includes step-dowel pins for pre-1970 engines. Their dual-quench combustion chambers produce approximately 9.5:1 compression in 401 V8 engines. The 45deg intake seat angle offers improved mid- to high-lift flow over the stock 30deg angle. The Edelbrock #601139 Performer RPM cylinder head has a machined heat crossover for 50-state emissions legal performance.\u003c\/p\u003e\u003cp\u003eGenuine Edelbrock. Part number 60139.\u003c\/p\u003e\u003cp\u003eShips from US warehouse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e California Proposition 65 — this product can expose you to chemicals known to the State of California to cause cancer or reproductive harm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Not CARB approved — not for sale or use on pollution-controlled vehicles in California.\u003c\/p\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":48712297611489,"sku":"60139","price":1544.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/7608\/4961\/files\/848438c01db533650e05b6a8893f0257.jpg?v=1784692750","url":"https:\/\/mlperformanceusa.com\/products\/edelbrock-60139","provider":"ML Performance USA","version":"1.0","type":"link"}