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Engine Block - Top/Bottom Views
Courtesy of GENERAL MOTORS COMPANY Engine Block - Top/Bottom Views
| Hole |
Thread Size |
Insert |
Drill |
Counter Bore Tool |
Tap |
Driver |
Drill Depth - Maximum mm (in) |
Tap Depth - Maximum mm (in) |
| J 42385- |
| 1 |
M8 x 1.25 |
210 |
206 |
207 |
208 |
209 |
22.5 (0.885) |
17.5 (0.688) |
| 2 |
M10 x 1.5 |
215 |
211 |
212 |
213 |
214 |
42.5 (1.67) |
37.0 (1.45) |
| 3 |
M10 x 2.0 |
104 |
101 |
N/A |
102 |
103 |
31.0 (1.22) |
25.5 (1.0) |
| 4 |
M10 x 2.0 |
104 |
101 |
N/A |
102 |
103 |
53.5 (2.10) |
44.0 (1.73) |
| 5 |
M8 x 1.25 |
210 |
206 |
207 |
208 |
209 |
26.5 (1.043) |
19.0 (0.748) |
- Bolt hole 2 has an 11.5 mm (0.452 in) counterbore included in the 42.5 mm (1.67 in) drill depth. Use sleeve J 42385-311 with the drill and tap.
- Bolt hole 3 has a 1.5 mm (0.059 in) counterbore included in the 31.0 mm (1.22 in) drill depth. Use sleeve J 42385-316 with the drill and tap.
- Bolt hole 4 has a 20.5 mm (0.807 in) counterbore included in the 53.5 mm (2.10 in) drill depth.
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