thanks to Patrick Vigil
ENGINE
Type 90° V-10
Number of Cylinders 10
Firing Order 1-10-9-4-3-6-5-8-7-2
Compression Ratio 9.6:1
Brake Horsepower 501@5600 RPM
Torque 525 ft. lbs. @4100 RPM
Crankshaft Forged Steel
Cylinder Block Aluminum Alloy with Interference Fit Cast Iron Liners
Connecting Rods Cracked Cap Powdered Metal
Pistons Cast Aluminum Alloy
Displacement 8.3L 505 cu. in.
Bore 102.4 mm 4.03 in.
Stroke 100.6 mm 3.96 in.
Compression Pressure 1069-1172 kPa 155-170 psi
Engine Weight (Approx.) 284 Kilograms 625 Lbs.
CYLINDER BLOCK DESCRIPTION SPECIFICATION
Cylinder Bore Diameter 102.356-102.368 mm 4.02975-4.03025 in.
Out of Round (Max.) 0.051 mm 0.002 in.
Taper (Max.) 0.038 mm 0.0015 in.
Tappet Bore Diameter 22.974-22.992 mm 0.9045-0.9052 in.
Block Length 693.7 mm 27.310 in.
Block Height 240.8 mm 9.48 in.
CRANKSHAFT
Connecting Rod Journal Diameter 53.990-54.008 mm 2.1256-2.1263 in.
Out-of-Round (Max.) 0.013 mm 0.0005 in.
Taper (Max.) 0.013 mm 0.0005 in
End Play 0.051-0.178 mm 0.002-0.007 in.
Desired 0.13 mm 0.005 in.
Wear Limit 0.254 mm 0.010 in.
Main Bearing Clearance 1-6 0.025-0.051 mm 0.001-0.002 in.
Wear Limit 0.076 mm 0.003 in.
MAIN BEARING JOURNALS
Diameter-High 76.233-76.246 mm 3.0013-3.0018 in.
Diameter-Low 76.220-76.223 mm 3.0008-3.0013 in.
Out of Round (Max.) 0.013 mm 0.0005 in
CONNECTING RODS
Bearing Clearance 0.005-0.074 mm. 0.0002-0.0029 in.
Desired 0.0381 mm 0.0015 in.
Wear Limit 0.0889 mm 0.0035 in.
Piston Pin Boar Diameter 23.940-23.978 mm 0.9425-0.9440 in.
Side Clearance (Two Rods) 0.25-0.46 mm 0.010-0.018 in.
Wear Limit 0.51 mm 0.020 in.
Total Weight (Less Bearing) 598.4 grams 21.11 oz.
PISTONS
Piston Size 102.314-102.332 mm. 4.0281-4.0288 in.
Clearance at Top of Skirt (12 mm from bottom) 0.025-0.055 mm. 0.0010-0.0022 in.
Land Clearance (Diametrical) 0.771-0.808 mm -0.036–0.042 in.
Weight 429-439 grams 15.13-15.49 oz.
Piston Length 57.0 mm 2.24 in.
Piston Pin Boar Diameter 23.940-23.978 mm 0.9425-0.9440 in.
Piston Pin Boar Offset 0.800 mm 0.031 in.
Piston Ring Groove Depth No.1 91.55-91.88 mm 3.604-3.614 in.
Piston Ring Groove Depth No.2 90.75-91.00 mm 3.573-3.583 in.
Piston Ring Groove Depth No.3 92.53-92.79 mm 3.643-3.653 in.
PISTON PINS
Clearance in Piston 0.009-0.022 mm 0.0004-0.0009 in.
Clearance in Connecting Rod 0.017-0.061 mm 0.0007-0.0024 in.
Diameter 23.995-24.000 mm 0.9447-0.9449 in.
Length 73.35 mm 2.888 in.
End Play None
PISTON RING
Piston Ring End Gap
Top Compression Ring 0.20-0.36 mm 0.008-0.014 in.
Second Compression Ring 0.56-0.79 mm 0.022-0.031 in.
Oil Control (Steel Rails) 0.25-0.76 mm 0.010-0.030 in.
Wear Limit-Top Compression Ring 0.63 mm 0.025 in.
Wear Limit-2nd Compression Ring 1.40 mm 0.055 in.
Wear Limit-Oil Control Steel Rails 1.64 mm 0.065 in.
Piston Ring Side Clearance
Top and 2nd Compression Ring 0.040-0.085 mm 0.0016-0.0033 in.
Oil Ring (Steel Ring) 0.046-0.201 mm 0.0018-0.0079 in.
Wear Limit- Top and 2nd Ring 0.10 mm 0.004 in.
Wear Limit Oil Ring Pack 0.216 mm 0.0085 in.
Piston Ring Width
Compression Rings 1.407-1.490 mm 0.0579-0.0586 in.
Oil Ring (Steel Rails) 0.447-0.473 mm 0.0176-0.0186 in.
CAMSHAFT
Lift 8.13 mm 0.320 in.
Journal Diameter 1-6 53.09-53.11 mm 2.090-2.091 in.
Boar Diameter No.1-6 53.16-53.19 mm 2.093-2.094 in.
Diametrical Clearance 0.051-0.102 mm 0.002-0.004 in.
Max. Allowable 0.127 mm 0.005 in.
End Play 0.127-0.381 mm 0.005-0.015 in.
Valve Timing-Exhaust Valve
Closes (ATC) 36.5°
Opens (BBC) 88.5°
Duration 305.0°
Valve Timing-Intake Valve
Closes (BTDC) 86.5°
Opens 23.5°
Duration 297.0°
Valve Overlap 60.0°
HYDRAULIC TAPPETS
Body Diameter 22.949-22.962 mm 0.9035-0.9040 in.
Clearance in Block 0.013-0.043 mm 0.0005-0.0017 in.
Plunger Travel (Dry) 4.24 mm 0.167 in.
Push Rod Length (Overall) 193.22-193.73 mm 7.607-7.627 in.
CYLINDER HEAD
Gasket Thickness (Compressed) 1.35 mm 0.053 in.
CYLINDER HEAD VALVE SEAT
Seat Angle 44°-44.5°
Runout (Max.) 0.038 mm 0.002 in.
Width (Finish) Intake and Exhaust 1.02-1.52 mm 0.040-0.060 in.
Guide Bore Diameter (Std.) 7.95-7.98 mm 0.313-0.314 in.
VALVES
Face Angle 45-45.5°
Back Cut Angle 25°-29°
Stem Diameter-Intake and Exhaust 7.90-7.92 mm 0.331-0.312 in.
Head Diameter-Intake 50.67-50.93 mm 1.995-2.005 in.
Head Diameter-Exhaust 40.01-40.26 mm 1.575-1.585 in.
Length-Intake (Over All) 145.69-146.33 mm 5.736-5.761 in.
Length-Exhaust (Over All) 146.23-146.86 mm 5.757-5.782 in.
Valve Margin-Intake 1.30 mm 0.051 in.
Valve Margin-Exhaust 2.03 mm 0.080 in.
Lift-Intake (Zero Lash 14.06 mm 0.554 in.
Lift-Exhaust (Zero Lash) 14.06 mm 0.554 in.
Valve Stem Tip Height 52.96 mm 2.085 in.
Stem-to-Guide Clearance-Intake and Exhaust 0.025-0.076 mm 0.001-0.003 in.
Max. Allowable-Intake (Rocking Method) 0.50 mm 0.020 in.
Max. Allowable-Exhaust (Rocking Method) 0.70 mm 0.027 in.
VALVE SPRING
Free Length - Spring 55.0 mm 2.165 in.
Free Length - Spring Damper 47 mm 1.850 in.
Spring Tension (Valve Closed) 534 ± 20 N @ 44.5 mm 120 ± 4.5 lbs. @ 1.750 in.
Spring Tension (Valve Open) 1245 ± 40 N @ 30.6 mm 280 ± 9.0 lbs. @ 1.207 in.
Number of Coils - Spring 7.25 Right Hand Twist
Number of Coils - Spring Damper 3.6 to 4.0 Left Hand Twist
Wire Diameter (Ovate) 4.2 x 5.3 mm 0.166 x 0.208 in.
Installed Height (Spring Seat to Bottom of Retainer) 44.5 mm 1.750 in.
LUBRICATION
At Curb Idle Speed* (Minimum with engine at operating temperature) 68.9 kPa 10 psi
At 3000 RPM 310-517 kPa 45-75 psi
CAUTION: *If pressure is ZERO at curb idle, DO NOT run engine at 3000 rpm.
OIL PUMP
Clearance Over Rotors (Max.) 0.077 mm 0.003 in.
Cover Out-Of-Flat (Max.) 0.076 mm 0.003 in.
Inner Rotor Thickness (Min.) 18.92 mm 0.744 in.
Clearance (Max.) 0.19 mm 0.007 in.
Diameter (Min.) 82.45 mm 3.246 in.
Thickness (Min.) 18.92 mm 0.744 in.
Tip Clearance Between Rotors (Max) 0.150 mm 0.0068 in.
ENGINE
Type 90° V-10
Number of Cylinders 10
Firing Order 1-10-9-4-3-6-5-8-7-2
Compression Ratio 9.6:1
Brake Horsepower 501@5600 RPM
Torque 525 ft. lbs. @4100 RPM
Crankshaft Forged Steel
Cylinder Block Aluminum Alloy with Interference Fit Cast Iron Liners
Connecting Rods Cracked Cap Powdered Metal
Pistons Cast Aluminum Alloy
Displacement 8.3L 505 cu. in.
Bore 102.4 mm 4.03 in.
Stroke 100.6 mm 3.96 in.
Compression Pressure 1069-1172 kPa 155-170 psi
Engine Weight (Approx.) 284 Kilograms 625 Lbs.
CYLINDER BLOCK DESCRIPTION SPECIFICATION
Cylinder Bore Diameter 102.356-102.368 mm 4.02975-4.03025 in.
Out of Round (Max.) 0.051 mm 0.002 in.
Taper (Max.) 0.038 mm 0.0015 in.
Tappet Bore Diameter 22.974-22.992 mm 0.9045-0.9052 in.
Block Length 693.7 mm 27.310 in.
Block Height 240.8 mm 9.48 in.
CRANKSHAFT
Connecting Rod Journal Diameter 53.990-54.008 mm 2.1256-2.1263 in.
Out-of-Round (Max.) 0.013 mm 0.0005 in.
Taper (Max.) 0.013 mm 0.0005 in
End Play 0.051-0.178 mm 0.002-0.007 in.
Desired 0.13 mm 0.005 in.
Wear Limit 0.254 mm 0.010 in.
Main Bearing Clearance 1-6 0.025-0.051 mm 0.001-0.002 in.
Wear Limit 0.076 mm 0.003 in.
MAIN BEARING JOURNALS
Diameter-High 76.233-76.246 mm 3.0013-3.0018 in.
Diameter-Low 76.220-76.223 mm 3.0008-3.0013 in.
Out of Round (Max.) 0.013 mm 0.0005 in
CONNECTING RODS
Bearing Clearance 0.005-0.074 mm. 0.0002-0.0029 in.
Desired 0.0381 mm 0.0015 in.
Wear Limit 0.0889 mm 0.0035 in.
Piston Pin Boar Diameter 23.940-23.978 mm 0.9425-0.9440 in.
Side Clearance (Two Rods) 0.25-0.46 mm 0.010-0.018 in.
Wear Limit 0.51 mm 0.020 in.
Total Weight (Less Bearing) 598.4 grams 21.11 oz.
PISTONS
Piston Size 102.314-102.332 mm. 4.0281-4.0288 in.
Clearance at Top of Skirt (12 mm from bottom) 0.025-0.055 mm. 0.0010-0.0022 in.
Land Clearance (Diametrical) 0.771-0.808 mm -0.036–0.042 in.
Weight 429-439 grams 15.13-15.49 oz.
Piston Length 57.0 mm 2.24 in.
Piston Pin Boar Diameter 23.940-23.978 mm 0.9425-0.9440 in.
Piston Pin Boar Offset 0.800 mm 0.031 in.
Piston Ring Groove Depth No.1 91.55-91.88 mm 3.604-3.614 in.
Piston Ring Groove Depth No.2 90.75-91.00 mm 3.573-3.583 in.
Piston Ring Groove Depth No.3 92.53-92.79 mm 3.643-3.653 in.
PISTON PINS
Clearance in Piston 0.009-0.022 mm 0.0004-0.0009 in.
Clearance in Connecting Rod 0.017-0.061 mm 0.0007-0.0024 in.
Diameter 23.995-24.000 mm 0.9447-0.9449 in.
Length 73.35 mm 2.888 in.
End Play None
PISTON RING
Piston Ring End Gap
Top Compression Ring 0.20-0.36 mm 0.008-0.014 in.
Second Compression Ring 0.56-0.79 mm 0.022-0.031 in.
Oil Control (Steel Rails) 0.25-0.76 mm 0.010-0.030 in.
Wear Limit-Top Compression Ring 0.63 mm 0.025 in.
Wear Limit-2nd Compression Ring 1.40 mm 0.055 in.
Wear Limit-Oil Control Steel Rails 1.64 mm 0.065 in.
Piston Ring Side Clearance
Top and 2nd Compression Ring 0.040-0.085 mm 0.0016-0.0033 in.
Oil Ring (Steel Ring) 0.046-0.201 mm 0.0018-0.0079 in.
Wear Limit- Top and 2nd Ring 0.10 mm 0.004 in.
Wear Limit Oil Ring Pack 0.216 mm 0.0085 in.
Piston Ring Width
Compression Rings 1.407-1.490 mm 0.0579-0.0586 in.
Oil Ring (Steel Rails) 0.447-0.473 mm 0.0176-0.0186 in.
CAMSHAFT
Lift 8.13 mm 0.320 in.
Journal Diameter 1-6 53.09-53.11 mm 2.090-2.091 in.
Boar Diameter No.1-6 53.16-53.19 mm 2.093-2.094 in.
Diametrical Clearance 0.051-0.102 mm 0.002-0.004 in.
Max. Allowable 0.127 mm 0.005 in.
End Play 0.127-0.381 mm 0.005-0.015 in.
Valve Timing-Exhaust Valve
Closes (ATC) 36.5°
Opens (BBC) 88.5°
Duration 305.0°
Valve Timing-Intake Valve
Closes (BTDC) 86.5°
Opens 23.5°
Duration 297.0°
Valve Overlap 60.0°
HYDRAULIC TAPPETS
Body Diameter 22.949-22.962 mm 0.9035-0.9040 in.
Clearance in Block 0.013-0.043 mm 0.0005-0.0017 in.
Plunger Travel (Dry) 4.24 mm 0.167 in.
Push Rod Length (Overall) 193.22-193.73 mm 7.607-7.627 in.
CYLINDER HEAD
Gasket Thickness (Compressed) 1.35 mm 0.053 in.
CYLINDER HEAD VALVE SEAT
Seat Angle 44°-44.5°
Runout (Max.) 0.038 mm 0.002 in.
Width (Finish) Intake and Exhaust 1.02-1.52 mm 0.040-0.060 in.
Guide Bore Diameter (Std.) 7.95-7.98 mm 0.313-0.314 in.
VALVES
Face Angle 45-45.5°
Back Cut Angle 25°-29°
Stem Diameter-Intake and Exhaust 7.90-7.92 mm 0.331-0.312 in.
Head Diameter-Intake 50.67-50.93 mm 1.995-2.005 in.
Head Diameter-Exhaust 40.01-40.26 mm 1.575-1.585 in.
Length-Intake (Over All) 145.69-146.33 mm 5.736-5.761 in.
Length-Exhaust (Over All) 146.23-146.86 mm 5.757-5.782 in.
Valve Margin-Intake 1.30 mm 0.051 in.
Valve Margin-Exhaust 2.03 mm 0.080 in.
Lift-Intake (Zero Lash 14.06 mm 0.554 in.
Lift-Exhaust (Zero Lash) 14.06 mm 0.554 in.
Valve Stem Tip Height 52.96 mm 2.085 in.
Stem-to-Guide Clearance-Intake and Exhaust 0.025-0.076 mm 0.001-0.003 in.
Max. Allowable-Intake (Rocking Method) 0.50 mm 0.020 in.
Max. Allowable-Exhaust (Rocking Method) 0.70 mm 0.027 in.
VALVE SPRING
Free Length - Spring 55.0 mm 2.165 in.
Free Length - Spring Damper 47 mm 1.850 in.
Spring Tension (Valve Closed) 534 ± 20 N @ 44.5 mm 120 ± 4.5 lbs. @ 1.750 in.
Spring Tension (Valve Open) 1245 ± 40 N @ 30.6 mm 280 ± 9.0 lbs. @ 1.207 in.
Number of Coils - Spring 7.25 Right Hand Twist
Number of Coils - Spring Damper 3.6 to 4.0 Left Hand Twist
Wire Diameter (Ovate) 4.2 x 5.3 mm 0.166 x 0.208 in.
Installed Height (Spring Seat to Bottom of Retainer) 44.5 mm 1.750 in.
LUBRICATION
At Curb Idle Speed* (Minimum with engine at operating temperature) 68.9 kPa 10 psi
At 3000 RPM 310-517 kPa 45-75 psi
CAUTION: *If pressure is ZERO at curb idle, DO NOT run engine at 3000 rpm.
OIL PUMP
Clearance Over Rotors (Max.) 0.077 mm 0.003 in.
Cover Out-Of-Flat (Max.) 0.076 mm 0.003 in.
Inner Rotor Thickness (Min.) 18.92 mm 0.744 in.
Clearance (Max.) 0.19 mm 0.007 in.
Diameter (Min.) 82.45 mm 3.246 in.
Thickness (Min.) 18.92 mm 0.744 in.
Tip Clearance Between Rotors (Max) 0.150 mm 0.0068 in.
