- Hypereutectic. Marine engine. .340 high dome with 2 valve reliefs. Coated skirts. Centered pin.
| Attributes | |
| Base Number | 3474HC |
| Crown Type | DOME |
| Eng. Disp Liters | 7.4 |
| Eng. Disp. In. | 454 |
| Engine Family | Chevy Big Block Mark IV |
| Engine Manufacturer | Chevrolet |
| Hazardous Material Code | N |
| Life Cycle Status Code | Available to Order |
| Lock | PRG110-3 |
| Oversize | .030 |
| Oversizes | STD .020 .030 .040 .060 |
| Pin Configuration | Centered |
| Pin Number | 0990x300K |
| PIN TYPE | Floating |
| Ring Pack | 5/64, 5/64, 3/16 |
| Sold As | Sold as a set, priced per piece |
| Top Land | .287 |
| Year From | 1970 |
| Year Range | 1970-2000 |
| Year To | 2000 |
| GTIN | 00800745098443 |