The Enginetech V1077B exhaust valve features a 1.500" head diameter, 0.3413" stem (11/32" nominal), and 4.921" overall length. Fits 1955-1980 GM/Chevrolet 2.5L/3.2L/3.5L/3.8L/4.1L/4.3L/4.6L/5.0L/5.4L/5.7L/6.6L applications.
Important Notes
- Sold as a bulk 25-pack. Intended for rebuilders and high-volume users; verify quantity required for your application before ordering.
- Tapered stem profile is specific to this application; ensure the tapered dimension matches the OE valve before installation.
- Catalog note: when depleted, successor part number is V1923B.
- Always verify head diameter, stem diameter, overall valve length, and groove count against the OE valve being replaced before installation - valve dimensions vary across engine families and a visual match alone is not sufficient.
Specifications
| Part Number | V1077B |
| Valve Type | Exhaust Valve |
| Head Diameter | 1.500" |
| Stem Diameter | 0.3413" (11/32" nominal) |
| Valve Length | 4.921" OAL |
| Stem Finish | Tapered Stem |
| Number of Grooves | 2 |
| Pack Count | 25 (bulk pack) |
| Weight | 3 lbs |
Vehicle Fitment
- 1962-1970 GM 2.5L / 153 OHV L4 8V Chev. 3.875" Bore
- 1962-1967 GM 3.2L / 194 OHV L6 12V Chev. 3.563" Bore
- 1964-1965 GM 3.5L / 215 OHV L6 12V Pont. 3.750" Bore
- 1963-1970 GM 3.8L / 230 OHV L6 12V Chev. 3.875" Bore
- 1966-1979 GM 4.1L / 250 OHV L6 12V Chev. 3.875" Bore
- 1955-1957 GM 4.3L / 265 OHV V8 16V Chev. 3.750" Bore
- 1975-1976 GM 4.3L / 262 OHV V8 16V "G" Chev. 3.671" Bore
- 1957-1967 GM 4.6L / 283 OHV V8 16V Chev. 3.875" Bore
- 1968-1973 GM 5.0L / 307 OHV V8 16V Chev. 3.875" Bore
- 1976-1980 GM 5.0L / 305 OHV V8 16V Chev. 3.736" Bore
- 1962-1969 GM 5.4L / 327 OHV V8 16V Chev. 4.000" Bore
- 1967-1970 GM 5.7L / 350 OHV V8 16V Chev. 4.000" Bore
- 1970-1976 GM 6.6L / 400 OHV V8 16V Chev. 4.125" Bore
- 1963-1966 GM/Chevrolet 3.2L / 194 OHV L6 12V Chev. 3.563" Bore
- 1963-1969 GM/Chevrolet 3.8L / 230 OHV L6 12V Chev. 3.875" Bore
- 1955-1957 GM/Chevrolet 4.3L / 265 OHV V8 16V Chev. 3.750" Bore
- 1957-1967 GM/Chevrolet 4.6L / 283 OHV V8 16V Chev. 3.875" Bore
- 1968-1971 GM/Chevrolet 5.0L / 307 OHV V8 16V Chev. 3.875" Bore
- 1966-1968 GM/Chevrolet 5.4L / 327 OHV V8 16V Chev. 4.000" Bore
Product Video
Watch the Enginetech exhaust valve overview: https://youtu.be/G487Dw8HtII
Watch the Enginetech exhaust 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.
