Operation CHARM: Car repair manuals for everyone.

General Engine Data/Specifications

General Data Engine Type 60° V-6
Displacement 204 cu in
RPO - VIN Code LA1(E)
Bore 3.62 inch
Stroke 3.31 inch
Compression Ratio 9.6:1
Firing Order 1-2-3-4-5-6
Oil Pressure - Warm 15 psi @ 1100 RPM
Cylinder Bore Diameter 3.6228 - 3.6235 inch
Out Of Round Maximum 0.00035 inch
Taper-Thrust Side Maximum 0.0004 inch
Piston - non-coated Diameter-Gaged on the skirt 50 mm (0.02 inch)
from the top of piston - production
3.6215 - 3.222 inch
Diameter-Gaged on the skirt 50 mm (0.02 inch)
from the top of piston - service limit
3.620 - 3.621 inch
Clearance - production 0.0006 - 0.0020 inch
Clearance - service limit 0.0019 - 0.0033 inch
Pin Bore 0.9057 - 0.9059 inch
Piston - Grafal coated Diameter-Gaged on the skirt 50 mm (0.02 inch)
from the top of piston production -
3.6217 - 3.6232 inch
Diameter-Gaged on the skirt 50 mm (0.02 inch) from the top of piston - 3.6201 - 3.6216 inch
Clearance - production 0.00031 - 0.0019 inch
Clearance - service limit 0.0013 - 0.0035 inch
Pin Bore 0.9057 - 0.9059 inch
Piston Ring Top Groove Side Clearance 0.002 - 0.0034 inch
Second Groove Side Clearance 0.002 - 0.0035 inch
Top Ring Gap 0.008 - 0.019 inch
Second Ring Gap 0.0213 - 0.0339 inch
Oil Ring Groove Clearance 0.0018 - 0.0079 inch
Gap in Cylinder Bore 0.012 - 0.035 inch
Piston Pin Diameter 0.9053 - 0.9054 inch
Clearance in Piston 0.00031 - 0.00063 inch
Fit In Rod -0.0019 to -0.0007 inch
Crankshaft Main Journal Diameter 2.6473 - 2.6483 inch
Main Journal Taper 0.0002 inch
Out Of Round - Max 0.0002 inch
Flange Runout - Max 0.0016 inch
Cylinder Block Main Bearing Bore Diameter 2.8407 - 2.8412 inch
Crankshaft Main Bearing Inside Diameter 2.6492 - 2.6502 inch
Main Bearing Clearance 0.0008 - 0.0025 inch
Main Thrust Bearing Clearance 0.0012 - 0.0030 inch
Crankshaft End Play 0.0024 - 0.0083 inch
Crankshaft Flange Runout- Max 0.0016 inch
Connecting Rod Bearing Journal Diameter 1.9987 - 1.9994 inch
Rod Bearing Journal Taper- Max 0.0002 inch
Rod Bearing Journal Out Of Round - Max 0.0002 inch
Rod Bearing Bore Diameter 2.124 - 2.125 inch
Rod Inside Bearing Diameter 2.000 - 2.002 inch
Rod Bearing Journal Clearance 0.0007 - 0.0024 inch
Rod Side Clearance 0.007 - 0.017 inch
Camshaft Lobe Lift - Intake and Exhaust 0.2727 inch
Journal Diameter 1.868 - 1.869 inch
Camshaft Bearing Bore Diameter-Front and Rear 2.009 - 2.011 inch
Camshaft Bearing Bore Diameter-Middle #2 and #3 1.999 - 2.001 inch
Camshaft Bearing Inside Diameter 1.871 - 1.872 inch
Journal Clearance 0.001 - 0.0039 inch
Journal Runout- Max 0.001 inch
Valve System Roller Lifter Hydraulic
Rocker Arm Ratio 1.60:1
Valve Face Angle 45°
Seat Angle 46°
Valve Seat Runout 0.002 inch
Seat Width-Intake 0.061 - 0.071 inch
Seat Width-Exhaust 0.067 - 0.079 inch
Valve Margin - Minimum Intake 0.083 inch
Valve Margin - Minimum Exhaust 0.106 inch
Valve Stem Clearance 0.0010 - 0.0027 inch
Valve Spring Valve Springs Free Length 1.89 inch
Valve Springs Load - Closed 75 lbs. @ 1.701 inch
Valve Springs Load - Open 230 lbs. 1.260 inch
Installed Height Intake-Exhaust 1.701 inch
Approximate number of coils 6.55
Oil Pump Gear Lash 0.0037 - 0.0077 inch
Gear Pocket Depth 1.202 - 1.204 inch
Gear Pocket Diameter 1.503 - 1.505 inch
Oil Pump Gear Length 1.199 - 1.200 inch
Diameter 1.498 - 1.500 inch
Side Clearance 0.001 - 0.003 inch
End Clearance 0.002 - 0.005 inch
Valve to Bore Clearance 0.0015 - 0.0035 inch