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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1043 (Engine Mechanical - 4.8L, 5.3L & 6.0L (Introduction)) >> Specifications >> Thread Repair Specifications >> Engine Block - Front View

Engine Block - Front View

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Block Bolt Holes - Front View
GM64583Courtesy of GENERAL MOTORS CORP.
Engine Block - Front View

Hole Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth - Maximum mm (in) Tap Depth - Maximum mm (in)
1-6 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 22.5 (0.885) 17.5 (0.688)
7 M10 x 1.5 J 42385-215 J 42385-211 J 42385-212 J 42385-213 J 42385-214 25.0 (0.984) 19.5 (0.767)
8 M10 x 1.5 J 42385-215 J 42385-211 J 42385-212 J 42385-213 J 42385-214 32.5 (1.28) 25.0 (0.984)
9 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 22.5 (0.885) 17.5 (0.688)
10 M10 x 1.5 J 42385-215 J 42385-211 J 42385-212 J 42385-213 J 42385-214 Thru Thru
11-13 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 22.5 (0.885) 17.5 (0.688)
14 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 Thru 18.0 (0.708)
15 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 22.5 (0.885) 17.5 (0.688)
16 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 Thru 18.0 (0.708)
17-27 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 22.5 (0.885) 17.5 (0.688)