Engine Specifications for 6,2 L

All Specifications are in millimeters ( mm ) unless otherwise noted
General Data
Type 90 degree V8 Diesel
Displacement 6,2 Litre
RPO LH6 / LL4
Bore 101
Stroke 97
Compression Ratio 21,3 : 1
Firing Order 1-8-7-2-6-5-4-3
Oil Pressure 10 psi at idle ( hot ) 40 - 45 psi at 2000 RPM
CYLINDER BORE
Diameter 100,987 - 101,065
Diameter Out of Round 0,02 ( Max )
Taper ( Thrust Side ) 0,02 ( Max )

PISTON

Clearence Bohn Piston Bore 1 through 6 0,089 - 0,115
Bore 7 and 8 0,102 - 0,128
Zollner Piston Bore 1 through 6 0,112 - 0,138
Bore 7 and 8 0,125 - 0,151
Piston Ring
Compression Groove Clearence Top 0,076 - 0,178
2nd 0,039 - 0,080
Gap Top 0,30 - 0,55
2nd 0,75 - 1,00
Oil Ring Groove Clearence 0,040 - 0,096
Gap 0,25 - 0,51
Piston Pin
Diameter 30,9961 - 31,0039
Clearence 0,0101 - 0,0153
Fit in Rod 0,0081 - 0,0309
CRANKSHAFT
Main Journal Diameter # 1,2,3,4 74,917 - 74,941
# 5 74,912 - 74,936
Taper 0,005 ( Max )
Out of Round 0,005 ( Max )
Main Bearings Clearance # 1,2,3,4, 0,045 - 0,083
# 5 0,055 - 0,093
Crankshaft End Play 0,10 - 0,25
Crankpin Diameter 60,913 - 60,939
Taper 0,005 ( Max )
Out of Round 0,005 ( Max )
Rod Bearing Clearance 0,045 - 0,100
Rod Side Clearance 0,17 - 0,63
CAMSHAFT
Lobe Lift + / - 0,005 Intake 7,133
Exhaust 7,133
Journal Diameter # 1, 2, 3, 4 54,970 - 55,025
# 5 50,970 - 51,025
Journal Clearence # 1, 2, 3, 4 0,025 - 0,118
# 5 0,020 - 0,113
Camshaft End Play 0,051 - 0,305
VALVE SYSTEM
Lifter Hydraulic Roller
Rocker Arm Ratio 1,5 : 1
Valve Lash Intake Not Adjustable
Exhaust
Face Angle    ( Intake & Exhaust ) 45 Deg.
Seat Angle    ( Intake & Exhaust ) 46 Deg.
Seat Runout   ( Intake & Exhaust ) 0,005
Seat Width Intake 0,89 - 1,53
Exhaust 1,57 - 2,36
Stem Clearence Intake 0,026 - 0,069
Exhaust 0,026 - 0,069
Valve Spring Pressure     Newton @ mm Closed 356 N @ 46,0 mm
Open 1025N @ 35,3 mm
Innstalled Height 46,0 mm
Timing Chain Free Play New Chain 12,7 mm ( 0,500 inch)
Used Chain 20,3 mm ( 0,800 inch )
Hydraulic Lifter Diameter Standard 23,39 - 23,41
0,010 - inch Oversize 23,64 - 23,66
Lifter Bore Diameter Standard 23,45 - 23,47
0,010 - inch Oversize 23,70 - 23,72
Lifter Bore Clearence 0,040 - 0,080 1)
1) An oversize lifter can be used to replace a standard lifter, if resulting clearance is as specified.