Engine Specifications
| General Specifications | Engine Type | 90 ° V-10 OHV |
| Displacement | 8.0L / 7994 cc (488 cu.in.) | |
| Bore & Stroke | 101.6 x 98.6 mm (4.00 x 3.88 in.) | |
| Compression Ratio | 9.6 : 1 | |
| Horsepower | 450 bhp @ 5200 rpm | |
| Torque | 490 lb-ft @ 3700 rpm | |
| Firing Order | 1-10-9-4-3-6-5-8-7-2 | |
| Lubrication | Pressure Feed-Full Flow Filtration Direct crankshaft-driven oil pump | |
| Cooling System | Liquid Cooled-Forced Circulation | |
| Cylinder Block | Aluminum Alloy With Interference-fit P/M Iron Sleeves | |
| Crankshaft | Forged Steel | |
| Connecting Rods | Forged Steel | |
| Pistons | Cast Aluminum Alloy | |
| Compression Pressure | 1069 - 1172 kPa (155 -170 psi) | |
| Maximum Variation Between Cylinders | 25% | |
| Engine Weight (approx.) | 281 kg (620 lb) | |
| Cylinder Block | Cylinder Bore Diameter | 101.594 - 101.606 mm (3.99975 - 4.00025 in.) |
| Out-of-Round (Max.) | 0.051 mm (0.002 in.) | |
| Taper (Max.) | 0.038 mm (0.0015 in.) | |
| Tappet Bore Diameter | 22.982 - 23.010 mm (0.9048 - 0.9059 in.) | |
| Pistons | Piston Size | 101.551 - 101.569 mm (3.9981 - 3.9988 in.) |
| Clearance at Top of Skirt | 0.025 - 0.055 mm (0.0010 - 0.0022 in.) | |
| Weight | 447 - 467 grams (15.77 - 16.28 oz) | |
| Land Clearance (DIametrical) | 0.772 - 0.808 mm (0.036 - 0.042 in.) | |
| Piston Length | 57.0 mm (2.24 in.) | |
| Piston Ring Groove Depth No. 1 | 91.55 - 91.80 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 - 0.0022 mm (0.0004 - 0.0009 in.) |
| Clearance in Rod (interference) | 0.017 - 0.061 mm (0.0007 - 0.0024 in.) | |
| Diameter | 23.995 - 24.000 mm (0.9447 - 0.9449 in.) | |
| End Play | None | |
| Length | 66.7 - 67.0 mm (2.63 - 2.64 in .) | |
| Piston Ring Gap | Top Compression Ring | 0.20 - 0.36 mm (0.008 - 0.014 in.) |
| Wear Limit | 0.63 mm (0.025 in.) | |
| 2nd Compression Ring | 0.56 - 0.79 mm (0.022 - 0.031 in.) | |
| Wear Limit | 1.40 mm (0.055 in.) | |
| Oil Control (Steel Rails) | 0.25 - 0.76 mm (0.010 - 0.030 in.) | |
| Wear Limit | 1.64 mm (0.065 in.) | |
| Piston Ring Side Clearance | Top & 2nd Compression Rings | 0.040 - 0.085 mm (0.0016 - 0.0033 in.) |
| Wear Limit | 0.10 mm (0.004 in.) | |
| Oil Ring (Steel Rails) | 0.046 - 0.201 mm (0.0018 - 0.0079 in.) | |
| Wear Limit | 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.) | |
| 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 Bore Diameter | 23.940 - 23.978 mm (0.9426 - 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) | 758 grams (26.7 oz) | |
| Crankshaft | Connecting Rod Journal | 53.950 - 53.975 mm (2.124 - 2.125 in.) |
| Out-of-Round (Max.) | 0.013 mm (0.0005 in.) | |
| Taper (Max.) | 0.013 mm (0.0005 in.) | |
| Main Bearing Clearance (Diametrical) No. 1-6 | 0.025 - 0.051 mm (0.001 - 0.002 in.) | |
| Wear Limit | 0.076 mm (0.003 in.) | |
| End Play | 0.051 - 0.178 mm (0.002 - 0.007 in.) | |
| Desired | 0.013 mm (0.005 in.) | |
| Wear Limit | 0.254 mm (0.010 in.) | |
| Main Bearing Journals | Diameter-High | 76.233 - 76.246 mm (3.0013 - 3.0018 in.) |
| Diameter-Low | 76.220 - 76.233 mm (3.0008 - 3.0013 in.) | |
| Out-of-Round (Max.) | 0.013 mm (0.0005 in.) | |
| Camshaft | Bearing Journal Diameter No. 1-6 | 53.09 - 53.11 mm (2.090 - 2.091 in.) |
| Bore 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 | 0.0203 - 0.0610 mm (0.0008 - 0.0024 in.) | |
| Plunger Travel Minimum (Dry) | 4.24 mm (0.167 in.) | |
| Push Rod Length | 194.36 - 194.87 mm (7.652 - 7.672 in .) | |
| Cylinder Head | Gasket Thickness (Compressed) | 1.372 mm (0.054 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 ° |
| Stem Diameter-intake and Exhaust | 7.90 - 7.92 mm (0.311 - 0.312 in.) | |
| Head Diameter-intake | 48.64 - 48.90 mm (1.915 - 1.925 in.) | |
| Head Diameter-Exhaust | 40.01 - 40.26 mm (1.575 - 1.585 in.) | |
| Length-intake (Overall) | 145.11 - 145.75 mm (5.713 - 5.738 in.) | |
| Length-Exhaust (Overall) | 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) | 13.77 mm (0.542 in.) | |
| Lift-Exhaust (Zero Lash) | 13.77 mm (0.542 in.) | |
| Valve Stem Tip Height | 49.02 mm (1.929 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 Springs | Free Length Inner (Approx.) | 48.59 mm (1.913 in.) |
| Free Length Outer (Approx.) | 50.24 mm (1.978 in.) | |
| Spring Tension (Valve Closed) | Inner | 169 - 187 N @ 38.33 mm (38 - 42 lbs. @ 1.509 in.) |
| Outer | 271 - 289 N @ 43.41 mm (61 - 65 lbs. @ 1.709 in.) | |
| Spring Tension (Valve Open) | Inner | 427 - 463 N @ 24.99 mm (96 - 104 lbs. @ 0.984 in.) |
| Outer | 854 - 925 N @ 30.07 mm (192 - 208 lbs. @ 1.184 in.) | |
| Valve Springs Number of Coils | Inner | 6.9 Left Hand Twist |
| Outer | 5.5 Right Hand Twist | |
| Valve Springs Wire Diameter | Inner | 3.35 mm (0. 132 in.) |
| Outer | 4.88 mm (0. 192 in.) | |
| Installed Height (Spring Seat to Bottom of Retainer) | Inner | 37.77 mm (1.487 in.) |
| Outer | 42.85 mm (1.687 in.) | |
| 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) | |
| Outer Rotor (Oil Pump) | 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.) | |
| Oil Pressure | At Curb Idle Speed CAUTION: If pressure is ZERO at curb idle, DO NOT run engine at 3,000 rpm. | 68.9 kPa (10 psi) |
| At 3000 rpm | 310 - 517 kPa (45 - 75 psi) |