{"product_id":"verify-p-n-empi-gtv-2-dual-port-cylinder-head-90-5-92mm-40-35-5mm-ss-valves-dual-spring","title":"EMPI GTV-2 Dual Port Cylinder Head | VW Type 1 Aircooled | 90.5\/92mm Bore, 40\/35.5mm SS Valves, Dual Spring","description":"\u003ch2\u003e\u003cb\u003eEMPI GTV-2 Dual Port Cylinder Head — 90.5\/92mm Bore, 40\/35.5mm Stainless Valves, Dual Spring\u003c\/b\u003e\u003c\/h2\u003e\u003cp\u003eThe EMPI \u003cb\u003eGTV-2 cylinder head casting\u003c\/b\u003e out-classes the competition. Machined to fit \u003cb\u003e90.5mm and 92mm pistons\u003c\/b\u003e and assembled with \u003cb\u003edual hi-rev valve springs\u003c\/b\u003e for higher-RPM camshaft profiles, its beefed-up intake and exhaust ports allow massive porting without the need for welding. 40×35.5mm stainless Manley valves. Sold each.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eVehicle Fitment\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eVW Beetle (Type 1):\u003c\/b\u003e dual-port performance builds, 90.5\/92mm bore (1776cc \/ 1835cc \/ 1914cc)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Bus (Type 2):\u003c\/b\u003e dual-port performance builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Type 3:\u003c\/b\u003e dual-port performance builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Karmann Ghia:\u003c\/b\u003e dual-port performance builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Thing:\u003c\/b\u003e dual-port performance builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eNote:\u003c\/b\u003e Recommended for high-lift \/ high-RPM camshafts.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eWhy Choose EMPI?\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003eThe GTV-2 casting is a proven platform for high-output street and race engines.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eKey Features \u0026amp; Benefits\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePort-ready GTV-2 casting:\u003c\/b\u003e 20% larger intake and exhaust ports than stock, with added material around the combustion chamber for deep fly cutting — massive porting without welding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMachined for 90.5\/92mm:\u003c\/b\u003e direct fit for 1776cc \/ 1835cc \/ 1914cc stroker builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDual hi-rev valve springs:\u003c\/b\u003e for high-lift performance cams.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStainless Manley valves:\u003c\/b\u003e 40mm intake \/ 35.5mm exhaust.\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eChromoly retainers and hardened keepers.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBronze valve guides:\u003c\/b\u003e for durability.\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e3-angle performance valve job.\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStuds included:\u003c\/b\u003e rocker, exhaust, and intake studs.\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eSold each.\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBore:\u003c\/b\u003e 90.5mm \/ 92mm, GTV-2 dual port casting\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eValves:\u003c\/b\u003e 40mm intake \/ 35.5mm exhaust, stainless Manley\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSprings:\u003c\/b\u003e dual hi-rev\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePorts:\u003c\/b\u003e 20% larger than stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSpark plugs:\u003c\/b\u003e 12mm 3\/4\" reach\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eImportant:\u003c\/b\u003e Lash Caps (P\/N 00-4006-0) are required for all stainless steel valve applications — sold separately. 12mm long-reach spark plugs must be used in place of stock Bosch plugs. Verify rocker arm geometry and check for coil bind with dual springs.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eFrequently Asked Questions\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eWhat bore are these machined for?\u003c\/b\u003e 90.5mm and 92mm pistons (1776cc \/ 1835cc \/ 1914cc).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhy dual springs?\u003c\/b\u003e They're assembled with dual hi-rev valve springs for high-lift \/ high-RPM camshaft profiles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCan I port them?\u003c\/b\u003e Yes — the GTV-2 casting has 20% larger ports and extra chamber material, allowing massive porting without welding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDo I need lash caps?\u003c\/b\u003e Yes — required with stainless valves, sold separately (00-4006-0).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAnything to check when installing dual springs?\u003c\/b\u003e Verify rocker arm geometry and check for coil bind.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAre you an authorized dealer?\u003c\/b\u003e Yes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003e\u003cb\u003eExplore Related Categories\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003eBuild your air-cooled VW engine with more from our catalog: \u003ca href=\"\/collections\/engine-parts\"\u003eEngine Parts\u003c\/a\u003e, \u003ca href=\"\/collections\/engine\"\u003eEngine\u003c\/a\u003e, and the full \u003ca href=\"\/collections\/empi\"\u003eEMPI\u003c\/a\u003e lineup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals including Lead known to the State of California to cause cancer and reproductive harm. For more information, go to \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\" target=\"_blank\" rel=\"noopener\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e. All parts legal for use on pre-pollution controlled vehicles only.\u003c\/p\u003e","brand":"EMPI","offers":[{"title":"Default Title","offer_id":44924453912691,"sku":null,"price":469.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/98-1334-B-scaled.jpg?v=1778011781","url":"https:\/\/www.washburnsmetal.com\/products\/verify-p-n-empi-gtv-2-dual-port-cylinder-head-90-5-92mm-40-35-5mm-ss-valves-dual-spring","provider":"Washburn's Metal","version":"1.0","type":"link"}