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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical - 4.3L (LV1)) >> Specifications >> Thread Repair Specifications >> Cylinder Head - Top/End Views

Cylinder Head - Top/End Views

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GM3632647Courtesy of GENERAL MOTORS COMPANY
Cylinder Head - Top/End Views

Hole Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth - Maximum mm (in) Tap Depth - Maximum mm (in)
J-42385-
1 M8 x 1.25 N/A N/A N/A N/A N/A 23.0 (0.907) 23.0 (0.907)
2 M6 x 1.0 205 201 202 203 204 23.0 (0.907) 23.0 (0.907)
3 M10 x 1.5 420 211 212 213 214 30.0 (1.18) 30.0 (1.18)
4 M8 x 1.25 210 206 207 208 209 23.0 (0.907) 23.0 (0.907)
Bolt Hole 1 (Rocker Arm Supports) are not serviceable.