- 2.620" diameter recess .075" deep.
- 4 valve reliefs.
- Car and truck engine.
- .060" Offset, floating pin.
- Head volume +9.5cc.
- Piston and Ring Kit.
| Attributes | |
| Alloy | Cast 390 Hypereutectic Alloy |
| Base Number | 1139 |
| Bore (in) | 4.05 |
| Bore (mm) | 102.9 |
| Compression Ratio | 8.2:1 |
| Country of Origin (Primary) | MX |
| Crown (cc) | +9.5cc |
| Crown Type | Dish |
| Cylinder Bore Diameter | 4.05 |
| Eng. Disp. In. | 390 |
| Eng. Disp. Liters | 6.4 |
| Engine Family | Ford Big Block FE |
| Engine Manufacturer | Ford |
| Grade Type | Regular |
| Hazardous Material Code | N |
| Life Cycle Status Code | Available to Order |
| Lock | 98 |
| Make For Engine Family | Ford |
| Oe Assembly | C8TZ6108R, D1AZ6108G |
| Oil Ring Thickness | 0.187 |
| Oversize | STD |
| Oversized | No |
| Oversized Amount | STD |
| Oversizes | STD .020 .030 .040 .060 |
| Pin Configuration | Offset |
| Pin Diameter (in) | 0.975 |
| Pin Diameter (mm) | 24.8 |
| Pin Number | 0975X305C |
| PIN TYPE | Floating |
| Piston Material | Cast 390 Hypereutectic Alloy |
| Piston Pin Outside Diameter | 0.975 |
| Ring Pack | 5/64, 3/32, 3/16 |
| Rod (in) | 6.497 |
| Rod (mm) | 165.02 |
| Second Compression Ring Thickness | 0.093 |
| Sold As | Complete Piston and Ring Kit |
| Stroke (in) | 3.78 |
| Stroke (mm) | 96.01 |
| Top Compression Ring Thickness | 0.078 |
| Top Land | 0.23 |
| Uses Ring Set | 4050GM8 |
| Year From | 1968 |
| Year Range | 1968-1976 |
| Year To | 1976 |
| GTIN | 00800745290755 |