EMPI GTV-2 Dual Port Cylinder Head | VW Type 1 Aircooled | 90.5/92mm, 40/35.5mm SS Valves, Single Spring (98-1333-B)
Couldn't load pickup availability
EMPI GTV-2 Dual Port Cylinder Head — 90.5/92mm Bore, 40/35.5mm Stainless Valves, Single Spring (98-1333-B)
The EMPI 98-1333-B is a GTV-2 dual-port cylinder head machined for 90.5mm and 92mm pistons, for 1776cc and 1835cc air-cooled VW Type 1 stroker builds in the Beetle, Bus, Karmann Ghia, Type 3 and Thing. It has 40mm intake / 35.5mm exhaust stainless Manley valves, single hi-rev springs and ports 20% larger than stock. Sold each.
Part numbers: EMPI 98-1333-B (also written 981333B) · UPC 707924443417 · Required lash caps: EMPI 00-4006-0
Fitment
| Years | Vehicle | Notes |
|---|---|---|
| Dual-port builds | VW Beetle (Type 1) | 90.5mm or 92mm bore (1776cc / 1835cc) |
| Dual-port builds | VW Bus (Type 2) | Dual-port engine |
| Dual-port builds | VW Karmann Ghia | Dual-port engine |
| Dual-port builds | VW Type 3 | Dual-port engine |
| Dual-port builds | VW Thing | Dual-port engine |
| — | Stock 85.5mm or 94mm bore (use the matching-bore GTV-2 head) | Not confirmed |
| — | Single-port engines | Not confirmed |
| — | Type 4 engines | Not confirmed |
Specifications
| Spec | Detail |
|---|---|
| Bore | 90.5mm / 92mm, GTV-2 dual port casting |
| Valves | 40mm intake / 35.5mm exhaust, stainless Manley |
| Springs | Single hi-rev, chromoly retainers, hardened keepers |
| Guides | Bronze |
| Valve job | 3-angle performance |
| Ports | 20% larger than stock, port-ready |
| Spark plugs | 12mm 3/4" reach |
| Part number | 98-1333-B |
| UPC | 707924443417 |
| Sold | Each |
What's Included
- Assembled head with stainless Manley valves, single hi-rev springs, chromoly retainers and hardened keepers
Not Included
- Lash caps (P/N 00-4006-0), required with stainless valves
Why It Matters
The GTV-2 casting has ports 20% larger than stock and extra material around the combustion chamber for deep fly cutting, so it can run as-is for strong performance or be hand/CNC ported from mild to wild. Single springs suit milder cams; for high-lift cams EMPI offers the dual-spring version.
Installation Notes
- 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.
Frequently Asked Questions
What engines does the EMPI 98-1333-B head fit?
Dual-port VW Type 1 engines with 90.5mm or 92mm pistons (1776cc / 1835cc) in the Beetle, Bus, Karmann Ghia, Type 3 and Thing. Stock 85.5mm and 94mm bores need the matching-bore GTV-2 head.
What bore are these for?
90.5mm and 92mm pistons (1776/1835cc).
Can I port them?
Yes — the GTV-2 casting is designed for hand or CNC porting.
Single or dual springs?
Single hi-rev springs; for high-lift cams choose the dual-spring version.
Do I need lash caps?
Yes — required with stainless valves, sold separately (00-4006-0).
What's the part number?
EMPI 98-1333-B (UPC 707924443417).
Explore Related Categories
Build your air-cooled VW engine with more from our catalog: Engine Parts, Engine, and the full EMPI lineup.
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. Wash hands following installation or before eating. All parts legal for use on pre-pollution controlled vehicles only.
