- Hypereutectic.
- 2.950" diameter head recess .330" deep.
- Truck engine.
- Floating pin.
| Attributes | |
| Base Number | 3177H |
| Bore (in) | 4.05 |
| Bore (mm) | 102.9 |
| Bore Diameter | 4.05 |
| Compression Ratio | 7.2 |
| Country of Origin (Primary) | MX |
| Crown Type | DISH |
| Eng. Disp Liters | 6.4 |
| Eng. Disp. In. | 391 |
| Eng. Disp. Liters | 6.4 |
| Engine Family | Ford Big Block FT (Medium/Heavy Truck) |
| Engine Manufacturer | Ford |
| Hazardous Material Code | N |
| Life Cycle Status Code | Available to Order |
| Lock | 98 |
| Oil Ring Thickness | 0.1875 |
| Oversize | .040 |
| Oversized | Yes |
| Oversizes | STD .020 .030 .040 .060 |
| Pin Configuration | Offset |
| Pin Number | 0975x305A |
| PIN TYPE | Floating |
| Piston Head Type | Dish |
| Piston Material | Cast 390 Hypereutectic Alloy |
| Piston Pin Outside Diameter | .975 |
| Ring Pack | 3/32, 5/64, 3/16 |
| Second Compression Ring Thickness | 0.0781 |
| Sold As | Complete Piston Set |
| Top Compression Ring Thickness | 0.0938 |
| Top Land | .465 |
| Year From | 1964 |
| Year Range | 1964-1978 |
| Year To | 1978 |
| GTIN | 00800745101242 |