Engine overhaul technical data (Chevrolet Tahoe 1)

Dimensions and clearances in mm.

General information

Compression in cylinders (all engines) — 9.84 kgf/cm²

Maximum pressure difference in cylinders is 1.3 kgf/cm²

Oil pressure (minimal):

V6 and V8 engines 5.0 and 5.7 liters

• at 1000 rpm - 0.4 kgf/cm²
• at 2000 rpm - 1.2 kgf/cm²

V8 7.4 liter engine

• at 500 rpm - 0.66 kgf/cm²
• at 2000 rpm - 1.65 kgf/cm²

Cylinders

Diameter:



Taper, no more than - 0.02

Ovality, no more than 0.05

Cylinder head and valve mechanism

Head deformation, no more than - 0.1

Minimum valve chamfer width - 0.8

Clearance between guide bushing and valve:



Valve spring length in free state:

• engines V6 and V8 5.0 and 5.7l - 51.56
• v8 engine 7.4 liters - 53.84

Valve spring length after installation:

• v6 and V8 engines 5.0 and 5.7 l - 51.56
• 1987-1995 — 43,66
• Since 1996 - 42.4-43.6
• v8 7.4 liter engine 1987-1994 - 45.64

Crankshaft and connecting rods

Main journal diameter:



Main bearing clearance:



Connecting rod journal diameter:



Clearances in connecting rod bearings:





Connecting rod axial play:



Crankshaft axial clearance:

Pistons and rings

Clearance between piston and cylinder:



Clearance between ring and piston groove:





Piston ring joint clearance:

Tightening torques (Nm)

[The text of the article was obtained from the website: CHEVYMAN.RU]