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Home >> GMC >> 2000 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Engine Mechanical - 4.3L V6, 5.0L, 5.7L & 7.4L V8 - VINS [W,X,M,R,J]) >> Overhaul >> Cylinder Block Assembly >> Fitting Pistons

Fitting Pistons

WARNING: This page does not describe the selected car, but rather 55 other vehicles, including the 1999 Oldsmobile Bravada, 1999 GMC Yukon, 1999 GMC Suburban, 1999 GMC Sonoma, and 1999 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.

Measure piston diameter at 90-degree angle to piston in, on piston pin center line. Measure cylinder bore diameter 2 1/2" below cylinder block deck. Determine piston clearance. If piston clearance is not within specification, replace piston and/or machine cylinder bore as necessary. See appropriate CYLINDER BLOCK and PISTONS, PINS & RINGS tables under ENGINE SPECIFICATIONS. On 5.7L engines, position pistons so that arrow is facing front of engine. On 7.4L engines, position pistons so that valve cutout is pointing to centerline of engine, or dimple is facing front of engine.

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