Enginetech part number V1706 is a direct-replacement intake valve for 1970-1978 Ford 5.8L, 6.6L applications. Key specifications: 2.041" head, 0.3418" stem, 5.230" overall length, nitrided stem.
Important Notes
- Nitride-hardened stem surface resists wear and galling in high-temperature and high-load applications.
- Always verify head diameter, stem diameter, and overall valve length against the OE valve being replaced before installation. Valve dimensions vary across engine families - a visual match is not enough.
Specifications
| Part Number | V1706 |
| Valve Type | Intake Valve |
| Head Diameter | 2.041" |
| Stem Diameter | 0.3418" (11/32" nominal) |
| Valve Length | 5.230" OAL |
| Stem Finish | Nitrided Stem |
| Number of Grooves | 4 |
| Weight | 1.50 lbs |
| OEM Cross-Refs | AC Clevite: 252075, Dynagear: S1706, Dynagear: S1764, Elgin: I-1706, Elgin: I1764, Fed. Mogul: V2075 |
Vehicle Fitment
- 1970-1974 FORD 5.8L / 351 OHV V8 16V "H,M,Q,R" Cleveland
- 1975-1978 FORD 5.8L / 351 OHV V8 16V "H" Modified
- 1971-1978 FORD 6.6L / 400 OHV V8 16V "S"
- 1975-1978 FORD 5.8L / 351 OHV V8 16V "H,G" Modified
- 1977-1977 FORD 6.6L / 400 OHV V8 16V "S,Z"
Product Video
Watch the Enginetech intake valve overview: https://youtu.be/G487Dw8HtII
Watch the Enginetech intake valve overview: https://youtu.be/eLaQHop7rH8
Enginetech standard valves are stock-replacement engine valves produced from OE grade materials or better, engineered with the production engine rebuilder in mind. Face runout, stem finish, and stem diameter tolerances are held to some of the tightest standards in the internal engine parts industry, and every valve is inspected by on-site engineers against a documented quality plan before it leaves the plant. The line covers domestic, import, and common high-performance applications across a full range of head diameters, stem diameters, and overall lengths, with chrome-plated and nitride-hardened stem finishes available where the engine's operating conditions call for the upgrade. Always verify head diameter, stem diameter, valve length, groove count, and any oversize stem requirement against the original valve being replaced before installing, as multiple valve configurations can share the same vehicle nameplate.
WARNING: This product can expose you to chemicals including lead and nickel, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
