2.8L (Gen II) Specifications

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2.8L (Gen II) Engine Specifications

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Application

|{colsp=2}

Dimensions

|Metric|English
{colsp=3}General Data
Type|{colsp=2}60 degree V6
Displacement|{colsp=2}2.8L
RPO|{colsp=2}LB6
Bore|89.0 mm|
Stroke|76.0 mm|
Deck Height|224 mm|
Compression Ratio|{colsp=2}8.9:1
Firing Order|{colsp=2}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)
{colsp=3}Cylinder Bore
Diameter|88.983-89.017 m|
Out of Round - Maximum|0.013 mm|
Taper - Thrust Side Maximum|0.013 mm|
{colsp=3}Piston
Clearance|0.023-0.056 mm

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