K 3500 Truck 4WD V8-5.7L VIN R (1998)
Exhaust Manifold: Specifications
Engine Mechanical Specifications
Surface Flatness (Flange to Flange) ................................................................................................................................................. 0.25 mm (0.010 inch)
Surface Flatness (Individual Flange) ............................................................................................................................................... 0.05 mm (0.002 inch)