Surface Variation
| Surface Flatness (Exhaust Manifold Deck) | 0.002 |
| Surface Flatness (intake Manifold Deck) | 0.004 |
| Exhaust ManifoldSurface Flatness (Engine Block Deck) | 0.004 |
| Surface Flatness (Flange to Flange) | 0.010 |
| Surface Flatness (Individual Flange) | 0.002 |