Engine Block - Top View

WARNING: This page is about a different car, the 2004 Saturn Ion 3, 2004 Saturn Ion 2, and 2004 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Engine Block Thread Specifications - Top View

Courtesy of GENERAL MOTORS CORP.

Service Call Out	Thread Size	Insert	Drill	Counterbore Tool	Tap	Driver	Drill Depth (Maximum)		Tap Depth (Maximum)
J 42385-							MM	(IN)	MM	(IN)
1	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
2	M12 x 1.75	865	856	857	858	859	13.50	0.531	12.5	0.49
3	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
4	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
5	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
6	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
7	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
8	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
9	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
10	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
11	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
12	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
13	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
14	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
15	M11 x 1.5	507	504	N/A	505	506	113.30	4.461	107.3	4.22
16	M12 x 1.75	865	856	857	858	859	13.50	0.531	12.5	0.49