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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 >> Engine Block - Left/Right Side Views

Engine Block - Left/Right Side Views

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GM3632669Courtesy of GENERAL MOTORS COMPANY
Engine Block - Left/Right Side Views

Hole Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth - Maximum mm (in) Tap Depth - Maximum mm (in)
Standard Bolts J-42385-
1 M8 x 1.25 210 206 207 208 209 23.0 (0.907) 23.0 (0.907)
2 M10 x 1.25 420 211 212 213 214 34.0 (1.35) 34.0 (1.35)
3 M8 x 1.25 61 206 207 208 209 29.0 (1.14) 29.0 (1.14)
4 M12 x 1.75 865 856 857 858 859 16.0 (0.629) 16.0 (0.629)
5 M12 x 1.75 62 856 857 858 859 23.0 (0.907) 23.0 (0.907)
Head Bolts EN-42385-
6 M12 x 1.75 58 51 N/A 52 53 58.0 (2.28) 58.0 (2.28)
Refer to Thread Repair  for head bolt thread repair hardware and procedure.