| Piston/4.6L | Piston-diameter-oded Red I (inch) | | 3.550-3.551 |
| Piston-diameter-coded Blue 2 (inch) | | 3.5507-3.5515 |
| Piston-diameter-coded Yellow 3 (inch) | | 3.513-3.5521 |
| Piston-to-bore -clearance (inch) | | 0.0005-0.001 |
| Pin bore diameter (inch) | | 0.866-0.8663 |
| Ring groove width- compression (top) (inch) | | 0.06-0.610 |
| Ring groove width- compression (bottom) (inch) | | 0.060-0.0602 |
| Ring groove width-oil ring (inch) | | 0.275-0.2844 |
| Piston pin-length (inch) | | 2.44-2.443 |
| Diameter (inch) | | 0.866-0.8661 |
| Pin to piston clearance (inch) | | 0.0002-0.0004 |
| Pin to rod clearance (inch) | | 0.0006-0.00157 |
| Piston rings-ring gap -compression (top) (inch) | | 1.0 Max (0.0394) |
| Piston rings-ring gap -compression (top) (inch) | | 1.0 Max (0.0394) |
| Oil ring-side clearance (inch) | | 1.25 Max (0.05) |
| Oil ring-compression (top) (inch) | | 0.0016-0.0031 |
| Oil ring-compression (top) (inch) | | 0.0012-0.00031 |
| Oil ring | | snug fit |
| Oil ring-service limit (inch) | | 015 Max (0.0006) |
| Ring gap-compression (top) (inch) | | 0.01-0.02 |
| Ring gap-compression (bottom) (inch) | | 0.01-0.02 |
| Ring gap-oil ring (steel rail) (inch) | | 0.006-0.026 |
| Piston/5.4L | Piston diameter (Grade 2) at right angle to pin bore | | 90.180 +/- 0.005 |
| Piston to bore clearance (at Grade size) | | 0.00079-0.00177 inch |
| Pin bore diameter (piston) | | 0.8661-0.8663inch |
| Pin diameter | | 0.8658-0.8659 inch |
| Clearance | | 0.00023-.00049inch |
| Pin bore diameter (rod) | | 0.8666-0.8670 inch |
| Clearance | | 0.00073-0.01280 inch |
| Ring groove width | Top | 0.06024-0.06102 inch |
| | Intermediate | 0.05984-0.06063 inch |
| | Oil control | 0.1192-0.1201 inch |
| Piston ring gap | Top | 0.0051-0.0110 inch |
| | Intermediate | 0.0098-0.0157 inch |
| Oil control | | 0.0059-0.0256 inch |