FixVault

Cylinder Head - Top View

Fig 1: Cylinder Head - Top View
GM858408Courtesy of GENERAL MOTORS CORP.
Cylinder Head - Top View

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 6 x 1 405 n/a 406 203 204 205 28 1.103 24 0.945
2 M 6 x 1 201 202 n/a 203 204 205 THRU THRU
3 M 6 x 1 201 202 n/a 203 204 205 22 0.866 18 0.709