EMPI GTV-2 Dual Port Cylinder Head | VW Type 1 94mm | 40/35.5mm SS Valves, Dual Spring (98-1336-B)

EMPI GTV-2 Dual Port Cylinder Head — 94mm Bore, 40/35.5mm SS Valves, Dual Spring (98-1336-B)

Running a high-lift cam in a 94mm big-bore? This is the GTV-2 dual-port head built for it. EMPI's GTV-2 head (98-1336-B) is machined for 94mm pistons and assembled with dual hi-rev valve springs to keep up with aggressive, high-RPM camshafts.

It runs 40×35.5mm stainless Manley valves and ports 20% larger than stock — ready to run or port further. Sold each.

Vehicle Fitment

• VW Beetle: dual-port engine, 94mm bore
• VW Bus: dual-port engine
• VW Karmann Ghia: dual-port engine

Confirmed: VW Type 1 dual-port big-bore builds running 94mm bore with high-lift / high-RPM cams — 1914cc, 2110cc, 2276cc, 2332cc (Beetle, Bus, Karmann Ghia, Type 3, Thing). Not confirmed: stock 85.5mm or 90.5/92mm bore, single-port engines, Type 4 engines.

Why Choose EMPI?

Its GTV-2 heads are a staple of big-bore Type 1 builds.

Key Features & Benefits

• 94mm bore, GTV-2 dual port casting: built for big-bore Type 1 engines.
• 40mm intake / 35.5mm exhaust stainless Manley valves.
• Dual hi-rev valve springs: for high-lift performance cams.
• Chromoly retainers and hardened keepers.
• Bronze valve guides.
• Ports 20% larger than stock: port-ready for further flow work.
• Added material around the combustion chamber: allows deep fly cutting.
• 12mm 3/4" reach spark plug holes.
• Rocker, exhaust, and intake studs included.
• 3-angle performance valve job.
• Sold each.

Technical Specifications

• Valves: 40mm intake / 35.5mm exhaust, stainless Manley
• Springs: dual hi-rev
• Ports: 20% larger than stock, port-ready
• Spark plugs: 12mm 3/4" reach
• Part Number: 98-1336-B | UPC: 707924443448
• Sold as: each

Frequently Asked Questions

• Why dual springs? They handle high-lift, high-RPM camshafts that single springs can't keep up with.
• What bore are these for? 94mm pistons (1914-2332cc).
• Anything to check at install? Verify rocker geometry and check for coil bind with the dual springs.
• Do I need lash caps? Yes — required with stainless valves, sold separately (00-4006-0).
• What's the part number? EMPI 98-1336-B (UPC 707924443448).
• Are you an authorized dealer? Yes.

Installation

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.

Explore Related Categories

Engine Parts · All VW Air-Cooled · VW Beetle

Prop 65 Warning

WARNING: 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.