General Data

• Engine Type

V6

• RPO Code

L35/LU3

• VIN Code

W/X

• Displacement

4.3 L

262 CID

• Bore

101.60 mm

4.012 in

• Stroke

88.39 mm

3.480 in

• Compression Ratio

9.2:1

• Firing Order

1-6-5-4-3-2

• Spark Plug Gap

1.52 mm

0.060 in

• Oil Pressure - Minimum - at Normal Operating Temperature

42 kPa at 1,000 RPM

125 kPa at 2,000 RPM

166 kPa at 4,000 RPM

6 psig at 1,000 RPM

18 psig at 2,000 RPM

24 psig at 4,000 RPM

Balance Shaft

• Rear Bearing Journal Clearance

0.050-0.088 mm

0.0020-0.0035 in

• Rear Bearing Journal Diameter

38.085-38.100 mm

1.4994-1.500 in

Camshaft

• End Play

0.0254-0.2286 mm

0.0010-0.0090 in

• Journal Diameter

47.440-47.490 mm

1.8677-1.8696 in

• Journal Diameter Out-of-Round

0.025 mm - Maximum

0.0010 in - Maximum

• Lobe Lift - Exhaust

7.20-7.30 mm

0.283-0.287 in

• Lobe Lift - Intake

6.97-7.07 mm

0.274-0.278 in

• Runout

0.065 mm

0.0026 in

Connecting Rod

• Connecting Rod Bearing Clearance - Production

0.038-0.078 mm

0.0015-0.0031 in

• Connecting Rod Bearing Clearance - Service

0.025-0.063 mm

0.0010-0.0025 in

• Connecting Rod Journal Diameter

57.116-57.148 mm

2.2487-2.2497 in

• Connecting Rod Journal Out-of-Round - Production

0.007 mm - Maximum

0.0002 in - Maximum

• Connecting Rod Journal Out-of-Round - Service

0.025 mm - Maximum

0.0010 in - Maximum

• Connecting Rod Journal Taper - Production

0.00508 mm - Maximum

0.00030 in - Maximum

• Connecting Rod Journal Taper - Service

0.025 mm - Maximum

0.0010 in - Maximum

• Connecting Rod Side Clearance

0.15-0.44 mm

0.006-0.017 in

Crankshaft

• Crankshaft Bearing Clearance - Journal #1-Production

0.02-0.508 mm

0.0008-0.0020 in

• Crankshaft Bearing Clearance - Journal #2, #3, and #4-Production

0.028-0.058 mm

0.0011-0.0023 in

• Crankshaft Bearing Clearance - Journal #1-Service

0.0254-0.05 mm

0.0010-0.0020 in

• Crankshaft Bearing Clearance - Journal #2, #3, and #4-Service

0.025-0.063 mm

0.0010-0.0250 in

• Crankshaft End Play

0.050-0.20 mm

0.002-0.008 in

• Crankshaft Journal Diameter - Journal #1

62.199-62.217 mm

2.4488-2.4495 in

• Crankshaft Journal Diameter - Journal #2 and #3

62.191-62.215 mm

2.4485-2.4494 in

• Crankshaft Journal Diameter - Journal #4

62.179-62.203 mm

2.4480-2.4489 in

• Crankshaft Journal Out-of-Round - Production

0.005 mm - Maximum

0.0002 in - Maximum

• Crankshaft Journal Out-of-Round - Service

0.025 mm - Maximum

0.0010 in - Maximum

• Crankshaft Journal Taper - Production

0.007 mm - Maximum

0.0003 in - Maximum

• Crankshaft Runout

0.025 mm - Maximum

0.0010 in - Maximum

Cylinder Bore

• Diameter

101.618-101.643 mm

4.0007-4.0017 in

• Out-of-Round - Production

0.0127 mm - Maximum

0.00050 in - Maximum

• Out-of-Round - Service

0.05 mm - Maximum

0.002 in - Maximum

• Taper - Production Relief Side

0.025 mm - Maximum

0.0010 in - Maximum

• Taper - Production Thrust Side

0.012 mm - Maximum

0.0005 in - Maximum

• Taper - Service

0.025 mm - Maximum

0.0010 in - Maximum

Cylinder Head

• Surface Flatness

0.10 mm - Maximum

0.004 in - Maximum

Exhaust Manifold

• Surface Flatness - Flange to Flange

0.25 mm - Maximum

0.010 in - Maximum

• Surface Flatness - Individual Flange

0.05 mm - Maximum

0.002 in - Maximum

Intake Manifold

• Surface Flatness

0.10 mm - Maximum

0.004 in - Maximum

Oil Pan

• Oil Pan Alignment at Rear of Engine Block

0.3 mm - Maximum

0.011 in - Maximum

Piston

• Piston Bore Clearance - Production

0.018-0.061 mm

0.0007-0.0024 in

• Piston Bore Clearance - Service

0.075 mm - Maximum

0.0029 in - Maximum

Piston Pin

• Clearance in Piston - Production

0.013-0.023 mm

0.0005-0.0009 in

• Clearance in Piston - Service

0.025 mm - Maximum

0.0010 in - Maximum

• Diameter

23.545-23.548 mm

0.9270-0.9271 in

• Fit in Connecting Rod

0.012-0.048 mm - Interference

0.0005-0.0019 in - Interference

Piston Rings - End Gap Measured in Cylinder Bore

• Piston Compression Ring Gap - Production-Top Groove

0.25-0.40 mm

0.010-0.016 in

• Piston Compression Ring Gap - Production-2nd Groove

0.38-0.58 mm

0.015-0.023 in

• Piston Compression Ring Gap - Service-Top Groove

0.25-0.50 mm

0.010-0.020 in

• Piston Compression Ring Gap - Service-2nd Groove

0.38-0.80 mm

0.015-0.031 in

• Piston Compression Ring Groove Clearance - Production-Top Groove

0.030-0.070 mm

0.0012-0.0027 in

• Piston Compression Ring Groove Clearance - Production-2nd Groove

0.040-0.080 mm

0.0015-0.0031 in

• Piston Compression Ring Groove Clearance - Service

0.030-0.085 mm

0.0012-0.0033 in

• Piston Oil Ring Gap - Production

0.25-0.76 mm

0.010-0.029 in

• Piston Oil Ring Gap - Service

0.005-0.090 mm

0.0002-0.0035 in

• Piston Oil Ring Groove Clearance - Production

0.046-0.196 mm

0.0018-0.0077 in

• Piston Oil Ring Groove Clearance - Service

0.046-0.200 mm

0.0018-0.0079 in

Valve System

• Valve Face Angle

45 degrees

• Valve Head Edge Margin

0.79 mm - Minimum

0.031 in - Minimum

• Valve Lash

Net Lash--No Adjustment

• Valve Lift - Exhaust

10.879 mm

0.4280 in

• Valve Lift - Intake

10.527 mm

0.4140 in

• Valve Lifter

Hydraulic Roller Type

• Valve Rocker Arm

Roller Pivot Type

• Valve Rocker Arm Ratio

1.5:1

• Valve Seat Angle

46 degrees

• Valve Seat Runout

0.05 mm - Maximum

0.002 in - Maximum

• Valve Seat Width - Exhaust

1.651-2.489 mm

0.065-0.098 in

• Valve Seat Width - Intake

1.016-1.651 mm

0.040-0.065 in

• Valve Spring Free Length

51.3 mm

2.02 in

• Valve Spring Installed Height - Exhaust

42.92-43.43 mm

1.670-1.700 in

• Valve Spring Installed Height - Intake

42.92-43.43 mm

1.670-1.700 in

• Valve Spring Pressure - Closed

338-374 N at 43.2 mm

76-84 lb at 1.70 in

• Valve Spring Pressure - Open

832-903 N at 32.3 mm

187-203 lb at 1.27 in

• Valve Stem Clearance - Exhaust-Production

0.025-0.069 mm

0.0010-0.0027 in

• Valve Stem Clearance - Exhaust-Service

0.025-0.094 mm

0.0010-0.0037 in

• Valve Stem Clearance - Intake-Production

0.025-0.069 mm

0.0010-0.0027 in

• Valve Stem Clearance - Intake-Service

0.025-0.094 mm

0.0010-0.0037 in

• Valve Stem Oil Seal Installed Height - Measured from the Top of the Large Diameter Valve Guide Bevel to the Bottom of the Valve Stem Oil Seal

1-2 mm

0.03937-0.07874 in