{"product_id":"manley-11921-1-exhaust-valve-titanium-series-pontiac-pro-stock-dart-big-chief-for-chevrolet-big-block","title":"MANLEY 11921-1 Exhaust Valve Titanium Series (Pontiac Pro Stock, Dart Big Chief) for CHEVROLET Big Block","description":"\u003ch2\u003eDescription MANLEY 11921-1 Exhaust Valve Titanium Series (Pontiac Pro Stock, Dart Big Chief) for CHEVROLET Big Block\u003c\/h2\u003e\u003cp\u003eManley Performance Products Titanium Valves are designed to optimize engine performance, reduce valve train weight, and accommodate high-rpm applications.\u003c\/p\u003e \u003cp\u003eIdeal for reducing valve train weight, these valves improve engine efficiency and overall performance. They are tailored for high-rpm and extended high-rpm applications, allowing for higher engine speeds and compatibility with aggressive camshaft profiles.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eOne-piece forged construction with grain flow, ensuring durability and minimizing potential weak points compared to head-welded alternatives\u003c\/li\u003e \u003cli\u003eMeticulously machined in CNC turning centers and valve stem grinders to maintain exacting tolerances for optimal valve performance\u003c\/li\u003e \u003cli\u003eFinest titanium alloys used for both exhaust and exhaust valves, balancing mechanical properties, hardness, ductility, and fatigue strength at specific temperatures\u003c\/li\u003e \u003cli\u003eStringent final inspection and strict quality control measures for quality, performance, reliability, and delivery within tight tolerances\u003c\/li\u003e \u003c\/ul\u003e\u003ch3\u003eSpecifications:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eProduct Market: Domestic\u003c\/li\u003e \u003cli\u003eHead Diameter: 1.900 IN\u003c\/li\u003e \u003cli\u003eStem Diameter: 0.3415 IN\u003c\/li\u003e \u003cli\u003eValve Stem Diameter: 0.3415 IN\u003c\/li\u003e \u003cli\u003eO\/A Length: 6.450 IN\u003c\/li\u003e \u003cli\u003eInstalled Height: Stock\u003c\/li\u003e \u003cli\u003eTip Length: 0.250 IN\u003c\/li\u003e \u003cli\u003eMargin Width: .125 IN\u003c\/li\u003e \u003cli\u003eSeat Width: .075 IN\u003c\/li\u003e \u003cli\u003eSeat Angle: 45.00 DEG\u003c\/li\u003e \u003cli\u003eSeat Coating: None\u003c\/li\u003e \u003cli\u003eUnderhead Radius: 5\/8 IN\u003c\/li\u003e \u003cli\u003eWeight: 116 GR\u003c\/li\u003e \u003cli\u003eEmissions Code: 3\u003c\/li\u003e \u003cli\u003eCylinder Head: Dart Big Chief, Pontiac Pro Stock\u003c\/li\u003e \u003cli\u003eValve Series: Titanium Series\u003c\/li\u003e \u003cli\u003eValve Material: Titanium\u003c\/li\u003e \u003cli\u003eValve Groove Type: Conventional Square\u003c\/li\u003e \u003cli\u003eValve Type: Exhaust\u003c\/li\u003e \u003cli\u003eProduct Type: Engine Exhaust Valve\u003c\/li\u003e \u003cli\u003eValve Quantity: 1\u003c\/li\u003e \u003c\/ul\u003e","brand":"MANLEY","offers":[{"title":"Default Title","offer_id":43225541804212,"sku":"11921-1","price":207.06,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/140316-manley-11921-1-1_8f01fe6c-e1a7-4685-9a54-867164177b05.jpg?v=1787398012","url":"https:\/\/atomic-shop.eu\/products\/manley-11921-1-exhaust-valve-titanium-series-pontiac-pro-stock-dart-big-chief-for-chevrolet-big-block","provider":"ATOMIC-SHOP Performance Parts \u0026 Motorsport Equipment - EU","version":"1.0","type":"link"}