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Engine Block Bottom

Fig 1: Engine Block Bottom
GM916146Courtesy of GENERAL MOTORS COMPANY
Engine Block Bottom

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
    J 42385- MM (IN) MM (IN)
1 M10 x 2.0 720 N/A N/A 721 722 104 56.0 2.2047 49.0 1.9291
2 M8 x 1.25 702 N/A N/A 703 704 620 46.0 1.8110 40.5 1.5945
3 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
4 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU