{"product_id":"empi-gtv-2-dual-port-cylinder-head-85-5mm-40-35-5mm-ss-valves-single-spring-part-98-1381-b","title":"EMPI GTV-2 Dual Port Cylinder Head | VW Type 1 Aircooled | 85.5mm, 40\/35.5mm SS Valves, Single Spring (98-1381-B)","description":"\u003ch2\u003e\u003cb\u003eEMPI GTV-2 Dual Port Cylinder Head — 85.5mm Bore, 40\/35.5mm Stainless Valves, Single Spring (98-1381-B)\u003c\/b\u003e\u003c\/h2\u003e\u003cp\u003eIf you want a head that can grow with your build, the GTV-2 casting is the one to start from. EMPI's \u003cb\u003eGTV-2 dual-port head (98-1381-B)\u003c\/b\u003e has intake and exhaust ports \u003cb\u003e20% larger than stock\u003c\/b\u003e and extra chamber material for deep fly-cutting — run it as-is for strong performance, or hand\/CNC port it from mild to wild. Machined for 85.5mm bore with 40×35.5mm stainless Manley valves and single hi-rev springs. 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:\u003c\/b\u003e 1971–1979 (dual-port, 85.5mm or 87mm pistons)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Bus:\u003c\/b\u003e 1971 and later (dual-port)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Karmann Ghia:\u003c\/b\u003e 1971–1974\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Type 3:\u003c\/b\u003e dual-port builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVW Thing:\u003c\/b\u003e dual-port builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eNot confirmed:\u003c\/b\u003e big-bore 90.5\/92\/94mm builds (use the matching-bore GTV-2 head), single-port engines, Type 4 engines.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eWhy Choose EMPI?\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003eYou get genuine parts backed by real support.\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.\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\n\u003cb\u003eSingle hi-rev valve springs:\u003c\/b\u003e with chromoly retainers and hardened keepers.\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 85.5mm, 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 single hi-rev\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePorts:\u003c\/b\u003e 20% larger than stock, ready for hand\/CNC porting\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSpark plugs:\u003c\/b\u003e 12mm 3\/4\" reach\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e 98-1381-B (UPC 707924430769)\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 (e.g. NGK D8EA) must be used in place of stock Bosch plugs.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eFrequently Asked Questions\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCan I port these?\u003c\/b\u003e Yes — the GTV-2 casting has 20% larger ports and extra chamber material specifically so you can hand or CNC port from mild to wild.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat bore do they fit?\u003c\/b\u003e 85.5mm or 87mm pistons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat spark plugs?\u003c\/b\u003e 12mm 3\/4\" long-reach (e.g. NGK D8EA), not stock Bosch.\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\u003eWhat's the part number?\u003c\/b\u003e EMPI 98-1381-B (UPC 707924430769).\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\u003ch3\u003eProp 65 Warning\u003c\/h3\u003e\u003cp\u003eWARNING: This product can expose you to chemicals including lead which are known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov. All parts legal for use on pre-pollution controlled vehicles only.\u003c\/p\u003e","brand":"EMPI","offers":[{"title":"Default Title","offer_id":44924438904947,"sku":"98-1381-B","price":520.55,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/98-1381-B-scaled.jpg?v=1778011661","url":"https:\/\/www.washburnsmetal.com\/products\/empi-gtv-2-dual-port-cylinder-head-85-5mm-40-35-5mm-ss-valves-single-spring-part-98-1381-b","provider":"Washburn's Metal","version":"1.0","type":"link"}