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Engine Block - Front View

Fig 1: Engine Block - Front View
GM524532Courtesy of GENERAL MOTORS CORP.
Engine Block - Front View

Service Call Out Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth (Maximum) Tap Depth (Maximum)
J 42385- MM (IN) MM (IN)
1 M10 x 1.5 215 211 212 213 214 24.5 0.96 19.5 0.77
2 M8 x 1.25 210 206 207 208 209 23.5 0.93 18.5 0.73
3 M12 x 1.75 855 856 857 858 859 33.5 1.32 26.5 1.04
4 M8 x 1.25 210 206 207 208 209 23.5 0.93 18.5 0.73
5 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
6 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
7 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
8 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
9 M8 x 1.25 210 206 207 208 209 25.5 1.00 THRU
10 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
11 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
12 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
13 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
14 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
15 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
16 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
17 M6 x 1 205 201 202 203 204 20 0.787 16 0.63
18 M8 x 1.25 210 206 207 208 209 23.5 0.93 18.5 0.73
19 M8 x 1.25 210 206 207 208 209 55 2.17 THRU
20 M8 x 1.25 210 206 207 208 209 23.5 0.93 18.5 0.73
21 M12 x 1.75 855 856 857 858 859 33.5 1.32 26.5 1.04
22 M12 x 1.75 855 856 857 858 859 33.5 1.32 26.5 1.04