FixVault

Lower Crankcase - Front View

Fig 1: Identifying Bolt Size & Locations On Engine Block - Top
GM1492389Courtesy of GENERAL MOTORS CORP.
Lower Crankcase - Front View

Service Call Out Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth
Maximum
Tap Depth
Maximum
J 42385-850 MM IN MM IN
1 M8 x 1.25 210 206 207 208 209 23.5 0.925 18.5 0.73
2 M8 x 1.25 210 206 207 208 209 30.5 1.201 25.5 1.00