Engine Block - Right Side View

Fig 1: Engine Block - Right Side View

Courtesy of GENERAL MOTORS CORP.

Service Hole Location	Thread Size	Drill	Counterbore Tool	Stop Collar	Tap	Driver	Insert	Drill Depth (Max)		Tap Depth (Min)
J 42385-400 . See Special Tools .								mm	(in)	mm	(in)
1	M 16 x 1.5	n/a	n/a	n/a	n/a	n/a	n/a	32	1.260	23	0.906
2	M 6 x 1	201	202	n/a	203	204	205	22	0.866	18	0.709
3	M 8 x 1.25	206	207	n/a	208	209	210	23	0.906	18	0.709
4	M 10 x 1.5	211	212	n/a	213	214	420	33	1.300	27	1.063
5	M 16 x 2.0	n/a	n/a	n/a	n/a	n/a	n/a	29	1.142	16	1.024
6	M 10 x 1.5	211	212	n/a	213	214	420	23	0.906	18	0.709