2.8 Iron Head V6 Specs (Gen 1)

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Product Information
Specification

General Data: All dimensions are in millimeters

Type

60 degree V6

Displacement

2.8L

RPO

LL2

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

88.992-89.070

Out of Round

0.02 (Maximum)

Taper - Thrust Side

0.02 (Maximum)

Piston:

Clearance

0.017-0.043

Piston Ring:

COMPRESSION

Groove Clearance

Top

0.030-0.070

Second

0.040-0.095

Gap

Top

0.25-0.50

Second

0.25-0.50

OIL

Groove Clearance

0.199 (Maximum)

Gap

0.27-1.25

Piston Pin:

Diameter

22.9937-23.0015

Clearance

0.0065-0.0091

Fit in Rod

0.0187-0.0515 (Press)

Crankshaft:

Main

Journal

Diameter - 3 Dots

67.241-67.249

Diameter - 2 Dots

67.249-67.257

Diameter - 1 Dot

67.257-67.265

Taper

0.005 (Maximum)

Out Of Round

0.005 (Maximum)

Main Bearing Clearance

0.032-0.069

Crankshaft End Play

0.06-0.21

Crankpin

Diameter - 2 Dots

50.758-50.771

Diameter - 1 Dot

50.771-50.784

Taper

0.005 (Maximum)

Out of Round

0.005 (Maximum)

Rod Bearing Clearance

0.028-0.083

Rod Side Clearance

0.36-0.60

Camshaft:

Lift

Intake

6.65

Exhaust

6.94

Journal Diameter

47.44-47.49

Journal Clearance

0.026-0.101

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)

0.05

Seat Width

Intake

1.25-1.50

Exhaust

1.60-1.90

Stem Clearance

0.026-0.068

Valve Spring

Free Length

48.5

Pressure

N @ mm

Closed

391 @ 40

Open

867 @30

Installed Height

40

Valve Spring

Damper

Free Length

*47.2

Approx # of Coils

4

Fastener Tightening Specifications

Item

Nm

Ft Lbs

Air Injection Tube

34

25

Air Injection Tube Nut

25

18

Camshaft Sprocket Bolts

23

17

Connecting Rod Bolt Nuts

53

39

Coolant Outlet Bolts

21

15

Coolant Pump Bolts (M6 x 10)

10

7

Coolant Pump Bolts (M8 x 125)

24

18

Coolant Pump Nut

10

7

Cylinder Head Bolts (In Sequence)

95

70

*Manifold Side*

6 2 3 7

5 1 4 8

* Outer Side *

*

*

EGR Valve

25

18

Exhaust Manifold Bolts

34

25

Front Cover Bolts*

*** -10mm Bolt (4)

50

37

*** -8mm Bolt (6)

30

22

Flywheel Bolts

70

52

Intake Manifold Bolts (In Sequence)

21

15

H D A E I

< Front

G C B F J

*

Main Bearing Cap Bolts

95

70

Oil Filter Adapter

85

63

Oil Pump Bolt

41

30

Oil Pan Bolts (Rear Two)

25

18

Oil Pan Bolts, Studs and Nuts

10

7

Oil Pan Drain Plug

25

18

Oil Pump Cover Screws

9

7

Rocker Arm Cover Bolts

8

6

Rocker Arm Studs

65

48

Spark Plugs

30

22

Timing Chain Damper

21

15

Tortional Damper Bolt

95

70

Product CodeArticle28Gen1Spec
ConditionNew

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