System Specifications
SPECIFICATIONS - 4.7L H.O. ENGINEGENERAL SPECIFICATIONS Engine Type 90° SOHC V-8 16-Valve
Displacement 4.7 Liters / 4701 cc (287 Cubic Inches)
Bore 93.0 mm (3.66 inch)
Stroke 86.5 mm (3.40 inch)
Compression Ratio 9.7:1
Horsepower 270 BHP @ 5100 RPM
Torque 330 FT. LBS. @ 3600 RPM
Lead Cylinder #1 Left Bank
Firing Order 1-8-4-3-6-5-7-2
CYLINDER BLOCK
Cylinder Block Cast Iron Bore Diameter 93.010 ±.0075 mm (3.6619 ± 0.0003 inch)
Out of Round (MAX) 0.076 mm (0.003 inch)
Taper (MAX) 0.051 mm (0.002 inch)
PISTONS
Material Aluminum Alloy
Diameter 92.975 mm (3.6605 inch)
Weight 383.5 grams (13.52 ounces)
Ring Groove Diameter
No. 1 83.37 - 83.13 mm (3.296 - 3.269 inch)
No. 2 82.833 - 83.033 mm (3.261 - 3.310 inch)
No. 3 83.88 - 84.08 mm (3.302 - 3.310 inch)
PISTON PINS
Type Full Floating
Clearance In Piston 0.010 - 0.019 mm (0.0004 - 0.0008 inch)
Clearance in Rod 0.015 - 0.028 mm (0.0006 - 0.0011 inch)
Diameter 24.017 - 24.020 mm (0.9456 - 0.9457 inch)
PISTON RINGS
Ring Gap
Top Compression Ring 0.20 - 0.36 mm (0.0079 - 0.0142 inch)
Second Compression Ring 0.37 - 0.63 mm (0.0146 - 0.0249 inch)
Oil Control (Steel Rails) 0.25 - 0.76 mm (0.0099 - 0.30 inch)
Side Clearance
Top Compression Ring 0.051 - 0.094 mm (0.0020 - 0.0037 inch)
Second Compression Ring 0.040 - 0.080 mm (0.0016 - 0.0031 inch)
Oil Ring (Steel Ring) 0.019 - 0.229 mm (0.0007 - 0.0091 inch)
Ring Width
Top Compression Ring 1.472 - 1.490 mm (0.057 - 0.058 inch)
Second Compression Ring 1.472 - 1.490 mm (0.057 - 0.058 inch)
Oil Ring (Steel Rails) 0.445 - 0.470 mm (0.017 - 0.018 inch)
CONNECTING RODS
Bearing Clearance 0.015 - 0.055 mm (0.0006 - 0.0022 inch)
Side Clearance 0.10 - 0.35 mm (0.004 - 0.0138 inch)
Piston Pin Bore Diameter 24.045 - 24.035 mm (0.94665 - 0.94626 inch)
Bearing Bore Out of Round (MAX) 0.004 mm (0.0002 inch)
Total Weight (Less Bearing) 555 grams (19.5771 ounces)
CRANKSHAFT
Main Bearing Journal
Diameter 63.488 - 63.512 mm (2.4996 - 2.5005 inch)
Bearing Clearance 0.018 - 0.052 mm (0.0008 - 0.0021 inch)
Out of Round (MAX) 0.005 mm (0.0002 inch)
Taper (MAX) 0.008 mm (0.0004 inch)
End Play 0.052 - 0.282 mm (0.0021 - 0.0112 inch)
End Play (MAX) 0.282 mm (0.0112 inch)
Connecting Rod Journal
Diameter 50.992 - 51.008 mm (2.0076 - 2.0082 inch)
Bearing Clearance 0.015 - 0.055 mm (0.0006 - 0.0022 inch)
Out of Round (MAX) 0.005 mm (0.0002 inch)
Taper (MAX) 0.008 mm (0.0004 inch)
Bed Plate-Bolts
bolts A - L 54 Nm (40 ft. lbs.)
bolts 1-10 2.8 Nm (25 inch lbs.)
bolts 1-10 additional 90°
bolts Al- A6 27 Nm (20 ft. lbs.)
MAIN BEARING SELECTION CHART - 4.7L
Crankshaft Damper-Bolt 175 Nm (130 ft. lbs.)