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Engine Block Front

Fig 1: Engine Block Front
GM2400949Courtesy of GENERAL MOTORS COMPANY
Engine Block Front

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 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
2 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3189 27.0 1.0630
3 M8 x 1.25 206 207 N/A 208 209 210 THRU 22.0 0.8661
4 M8 x 1.25 206 207 N/A 208 209 210 THRU THRU
5 M10 x 1.5 211 212 N/A 213 214 215 28.0 1.1024 28.0 1.1024
6 M10 x 1.5 211 212 N/A 213 214 215 THRU 20.0 0.7874
7 M10 x 1.5 211 212 N/A 213 214 215 THRU 28.0 1.1024