- Hypereutectic. Mercruiser Marine engine. 3.200 dia. D shaped recess .130 deep (1+4cc cup). Not destroked.
| Attributes | |
| Base Number | 1491H |
| Crown (cc) | +16cc |
| Crown Type | DISH |
| Eng. Disp Liters | 3 |
| Eng. Disp. In. | 181 |
| Engine Family | GM L4 |
| Engine Manufacturer | Chevrolet |
| Hazardous Material Code | N |
| Life Cycle Status Code | Available to Order |
| Oe Assembly | 3963663 |
| Oversize | STD |
| Oversizes | STD .020 .030 .040 .060 |
| Pin Configuration | Offset |
| Pin Number | 0927x300A |
| PIN TYPE | Press |
| Ring Pack | 5/64, 5/64, 3/16 |
| Sold As | Sold as a set, priced per piece |
| Top Land | .240 |
| Year From | 1982 |
| Year Range | 1982-1989 |
| Year To | 1989 |
| GTIN | 00800745014467 |