Engine Block - Left Side View

Fig 1: Engine Block - Left Side View

Courtesy of GENERAL MOTORS CORP.

Hole	Thread Size	Insert	Drill	Counterbore Tool	Tap	Driver	Drill Depth Maximum mm (in)	Tap Depth Maximum mm (in)
1	M11 x 2.0	J 42385-108	J 42385-105	-	J 42385-106	J 42385-107	69.0 (2.72)	60.0 (2.36)
2	M8 x 1.25	J 42385-210	J 42385-206	J 42385-207	J 42385-208	J 42385-209	26.5 (1.04)	19.0 (0.784)
3-4	M11 x 2.0	J 42385-108	J 42385-105	-	J 42385-106	J 42385-107	124.0 (4.88)	115.0 (4.52)
5	M6 x 1.0	J 42385-205	J 42385-201	J 42385-202	J 42385-203	J 42385-204	22.5 (0.885)	16.0 (0.629)
6	M8 x 1.25	J 42385-210	J 42385-206	J 42385-207	J 42385-208	J 42385-209	26.5 (1.04)	19.0 (0.784)
7-8	M11 x 2.0	J 42385-108	J 42385-105	-	J 42385-106	J 42385-107	124.0 (4.88)	115.0 (4.52)
9	M8 x 1.25	J 42385-210	J 42385-206	J 42385-207	J 42385-208	J 42385-209	26.5 (1.04)	19.0 (0.784)
10-11	M11 x 2.0	J 42385-108	J 42385-105	-	J 42385-106	J 42385-107	124.0 (4.88)	115.0 (4.52)
12	M6 x 1.0	J 42385-205	J 42385-201	J 42385-202	J 42385-203	J 42385-204	22.5 (0.885)	16.0 (0.629)
13	M8 x 1.25	J 42385-210	J 42385-206	J 42385-207	J 42385-208	J 42385-209	26.5 (1.04)	19.0 (0.784)
14	M11 x 2.0	J 42385-108	J 42385-105	-	J 42385-106	J 42385-107	69.0 (2.72)	60.0 (2.36)
15	M8 x 1.25	J 42385-210	J 42385-206	J 42385-207	J 42385-208	J 42385-209	26.5 (1.04)	19.0 (0.784)
16	M11 x 2.0	J 42385-108	J 42385-105	-	J 42385-106	J 42385-107	124.0 (4.88)	115.0 (4.52)
17	M16 x 1.5	-	-	-	-	-	-	-
18-23	M10 x 1.5	J 42385-215	J 42385-211	J 42385-212	J 42385-213	J 42385-214	29.0 (1.14)	23.0 (0.905)
24-25	M8 x 1.25	J 42385-210	J 42385-206	J 42385-207	J 42385-208	J 42385-209	21.0 (0.826)	16.0 (0.629)
26	M16 x 1.5	-	-	-	-	-	-	-
27	M28 x 1.25	-	-	-	-	-	-	-
28	M10 x 1.5	J 42385-215	J 42385-211	J 42385-212	J 42385-213	J 42385-214	27.0 (1.06)	21.5 (0.846)
29	M11 x 2.0	J 42385-108	J 42385-105	-	J 42385-106	J 42385-107	124.0 (4.88)	115.0 (4.52)
Bolt holes 3, 4, 7, 8, 10, 11, 16, and 29 have a 85 mm (3.34 in) counterbore included in the 124.0 mm (4.88 in) drill depth. Bolt holes 1 and 14 have a 30 mm (1.18 in) counterbore included in the 69.0 mm (2.72 in) drill depth. Use sleeve J 42385-315 with the drill and tap.