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General Specifications

WARNING: This page is about a different car, the 2013 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Item Specification
Engine 
Displacement 4.957 L (302 CID)
Number of cylinders 8
Bore 92.2 mm (3.629 in)
Stroke 92.7 mm (3.649 in)
Firing order 1-5-4-8-6-3-7-2
Spark plug CYFS-12Y
Spark plug gap 1.25-1.35 mm (0.049-0.053 in)
Minimum oil pressure at idle (engine at normal operating temperature, transmission in park) 103 kPa (15 psi)
Compression ratio 10.5:1
Engine weight 197.3 kg (435 lb)
Cylinder Head and Valve Train 
Combustion chamber volume 54.5-57.5 cc (3.33-3.51 cu in)
Valve stem diameter - intake 5.975-5.995 mm (0.2352-0.2360 in)
Valve stem diameter - exhaust 5.950-5.970 mm (0.2342-0.2350 in)
Valve stem-to-guide clearance - intake 0.020-0.069 mm (0.0008-0.0027 in)
Valve stem-to-guide clearance - exhaust 0.045-0.094 mm (0.0018-0.0037 in)
Valve head diameter - intake 37 mm (1.45 in)
Valve head diameter - exhaust 31 mm (1.22 in)
Valve face runout 0.05 mm (0.0019 in)
Valve face angle 45 degrees
Valve seat width - intake 1.3-1.5 mm (0.051-0.059 in)
Valve seat width - exhaust 1.4-1.6 mm (0.059-0.063 in)
Valve seat runout 0.04 mm (0.0016 in)
Valve seat angle 120/90/60 degrees
Valve spring free length - intake 51.32 mm (2.02 in)
Valve spring free length - exhaust 51.32 mm (2.02 in)
Valve spring perpendicularity - intake 3 mm (0.118 in)
Valve spring perpendicularity - exhaust 3 mm (0.118 in)
Valve spring compression force - intake 650 N
Valve spring compression force - exhaust 650 N
Valve spring installed height - intake 40 mm (1.5748 in)
Valve spring installed height - exhaust 40 mm (1.5748 in)
Valve spring installed force - intake 265 N
Valve spring installed force - exhaust 265 N
Roller follower ratio 2:1
Head gasket surface flatness 0.025 mm (0.001 in) in any 25 mm (1 in) x 25 mm (1 in) area; 0.050 mm (0.002 in) in any 150 mm (6 in) x 150 mm (6 in) area; 0.1 mm (0.004 in) overall
Hydraulic Lash Adjuster 
Diameter - intake 11.89-12.00 mm (0.4681-0.472 in)
Diameter - exhaust 11.89-12.00 mm (0.4681-0.472 in)
Clearance-to-bore 0.018-0.050 mm (0.0007-0.0019 in)
Hydraulic leakdown rate - intake 0.45-3 seconds(1)
Hydraulic leakdown rate - exhaust 0.45-3 seconds(1)
Collapsed lash adjuster gap 0.35-0.85 mm (0.0137-0.0334 in)
Camshaft 
Lobe lift - intake 5.258 mm (0.2070 in)
Lobe lift - exhaust 5.488 mm (0.2160 in)
Journal diameter 28.607-28.633 mm (1.1262-1.1272 in)
Journal bore inside diameter 28.682-28.657 mm (1.1292-1.1282 in)
Journal-to-bearing clearance 0.025-0.075 mm (0.001-0.002 in)
Runout 0.04 mm (0.0016 in) (4 places)
End play 0.15 mm (0.0059 in)
Cylinder Block 
Cylinder bore diameter 92.200-92.220 mm (3.6299-3.6307 in)
Cylinder bore maximum taper 0.013 mm (0.0005 in)
Cylinder bore maximum out-of-round 0.010 mm (0.0004 in)
Main bearing bore inside diameter 72.400-72.424 mm (2.850-2.851 in)
Head gasket surface flatness 0.0254 mm (0.001 in) across any 38.1 mm (1.5 in) square
Crankshaft 
Main bearing journal diameter 67.481-67.505 mm (2.657-2.658 in)
Main bearing journal maximum taper 0.004 mm (0.0002 in)
Main bearing journal maximum out-of-round 0.008 mm (0.0003 in) between cross sections
Main bearing journal-to-main bearing clearance 0.025-0.045 mm (0.0009-0.0018 in)
Connecting rod journal diameter 52.983-53.003 mm (2.086-2.087 in)
Connecting rod journal maximum taper 0.004 mm (0.0002 in)
Crankshaft maximum end play 0.28 mm (0.011 in)
Piston and Connecting Rod 
Piston diameter 92.161-92.175 mm (3.6283-3.6289 in)
Piston-to-cylinder bore clearance (at grade size)(2) 0.025-0.059 mm (0.0009-0.0023 in)
Piston ring end gap - top 0.15-0.25 mm (0.0059-0.0098 in)
Piston ring end gap - intermediate 0.30-0.55 mm (0.0118-0.0216 in)
Piston ring gap - oil control 0.15-0.45 mm (0.0059-0.0177 in)
Piston ring groove width - top 1.220-1.250 mm (0.0480-0.0492 in)
Piston ring groove width - intermediate 1.220-1.240 mm (0.0480-0.0488 in)
Piston ring groove width - oil control 2.530-2.550 mm (0.0996-0.1003 in)
Piston ring width - top 1.17-1.19 mm (0.0460-0.0468 in)
Piston ring width - intermediate 1.17-1.19 mm (0.0460-0.0468 in)
Piston ring-to-groove clearance - top 0.030-0.080 mm (0.0019-0.0031 in)
Piston ring-to-groove clearance - intermediate 0.030-0.070 mm (0.0019-0.0028 in)
Piston pin bore diameter 22.004-22.010 mm (0.8663-0.8665 in)
Piston pin diameter 21.997-22.000 mm (0.8649-0.8661 in)
Piston pin length 60.7-61.0 mm (2.3897-2.4015 in)
Piston pin-to-piston fit (clearance) 0.004-0.013 mm (0.0002-0.0005 in)
Connecting rod-to-pin clearance 0.003-0.018 mm (0.0001-0.0007 in)
Connecting rod pin bore diameter 22.003-22.015 mm (0.8663-0.8667 in)
Connecting rod length (centerline bore-to-bore) 150.7 mm (5.933 in)
Connecting rod maximum allowed bend 0.038 mm (0.0015 in)
Connecting rod maximum allowed twist 0.050 mm (0.0019 in)
Connecting rod bearing-to-crankshaft clearance 0.028-0.069 mm (0.0011-0.0027 in)
Connecting rod side clearance (as assembled to crank) - standard play 0.325 mm (0.0128 in)
Connecting rod side clearance (as assembled to crank) - max. play 0.500 mm (0.0197 in)
(1) Time required for the plunger to leak down 1.6 mm of travel with 222 N force and leakdown fluid in the lash adjuster.
(2) Before Grafal coating.