2.8L (GEN 2) Engine Specifications

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2.8L (Gen II) Engine Specifications

General Data:
All dimensions are in millimeters
Type
60 degree V6
Displacement
2.8L
RPO
LB6
Bore
89.0
Stroke
76.0
Deck Height
224
Compression Ratio
8.9:1
Firing Order
1-2-3-4-5-6
Oil Pressure

69 kPa @500
RPM; 205-380 kPa @ 2000 RPM

(10 psi @ 500 RPM;
30-55 psi @ 2000R RPM)
Cylinder
Bore:
Diameter
88.983-89.017
Out of Round
0.013 (Maximum)
Taper - Thrust
Side
0.013 (Maximum)
Piston:
Clearance
0.023-0.056
Piston Ring:
COMPRESSION

Groove Clearance
Top
0.051.089
Second
0.051.089
Gap
Top
0.25-0.50
Second
0.25-0.50
OIL
Groove Clearance
0.199
(Maximum)
Gap
0.25-076
Piston Pin:
Diameter

22.992-22.997
Clearance
0.0064-0.0091
Fit in Rod
Press
Crankshaft:

Main

Journal Diameter
67.241-67.267
Taper
0.005 (Maximum)
Out Of Round
0.005 (Maximum)
Main Bearing
Clearance
0.030-0.069
Crankshaft End
Play
0.05-0.20

Crankpin
Diameter
50.757-50.785
Taper
0.005 (Maximum)
Out of Round
0.005 (Maximum)
Rod Bearing
Clearance
0.036-0.091
Rod Side
Clearance
0.36-0.68
Camshaft:
Lift
Intake
6.67
Exhaust
6.93
Journal Diameter
47.442-47.790
Journal Clearance
0.02-0.10
Valve System:
Lifter
Hydraulic
Rocker Arm Ratio
1.50:1
Valve
Lash
Intake

1-1/2 Turns Down from Zero Lash
Exhaust
Face Angle
(Intake & Exhaust)
45 degrease
Seat Angle
(Intake & Exhaust)
46 degrease
Seat Runout
(Intake & Exhaust)
0.02
Seat
Width
Intake
1.55-1.85
Exhaust
1.70-2.01
Stem Clearance
0.025-0.069
Valve
Spring
Free Length
48.51

Pressure

Kg @ mm
Closed
40.8 @ 43.2
Open
97 @ 32.79
Installed Height
40.01

Valve
Spring

Damper
Free Length
48.51
Approx # of Coils
4

Fastener Tightening Specifications

Item
Nm
Ft Lbs
Camshaft Sprocket Bolts
24
18
Connecting Rod Bolt Nuts
51
37
Crankshaft Damper Bolt
77
104
Cylinder Head Bolt (apply thread sealant
to bolts) First Pass
45
33 Final Pass Add 90 Degrees

*Manifold Side*

6 2 3 7

5 1 4 8

* Outer Side *
Exhaust Manifold Bolt
24
18
Flywheel Bolt
71
52
Front Timing Cover Case Bolt 8mm 18-35 13-25 10mm 27-47 20-35
Lower Intake Manifold Bolt First Pass 22 16 Final Pass 31 23
Upper Intake Manifold Bolt
22
16 Main Bearing Cap 99 73
Oil Pan Bolt
6mm
8-12
6-9 8mm 19-30 14-22
Oil Pump Bolt
41
30
Rocker Arm Nut
24
18
Timing Chain Damper Bolt
20
15