7.3 Engine Info

SVT4X4

Tremor Fiend
Joined
Apr 9, 2020
Messages
306
Reaction Points
754
Location
Michigan
Current Ride
2020 F250 Tremor
Specifications
Materials

NameSpecification
Engine Oil - SAE 5W-30 - Synthetic Blend Motor Oil
XO-5W30-Q1SP
WSS-M2C946-B1


Engine


Item​
Specification​
Bore4.2205 in (107.2 mm)
Stroke3.9764 in (101 mm)
Displacement
7.3L (445 CID)​
No. of cylinders
8​
Compression ratio
10.5:1​
Engine weight (without accessory drive components and with flexplate)580 lb (263 kg)
Firing order
1-5-4-8-6-3-7-2​
Spark plug12405




Engine Oil


ItemSpecification
Material : Engine Oil - SAE 5W-30 - Synthetic Blend Motor Oil / XO-5W30-Q1SP (WSS-M2C946-B1)​
WSS-M2C946-B1




Engine Oil Capacity


ItemSpecification
Service fill including oil filter​
8 qt (7.5 L)


Torque Specifications

Engine oil drain plug: 19 lb.ft (26 Nm)


Oil Pressure


ItemSpecification
Minimum oil pressure at idle (engine at normal operating temperature)​
8.0 psi (55 kPa)




Cylinder Head


ItemSpecification
Head gasket surface flatness​
0.025 mm (0.001 in) in any 25 mm (1 in) x 25 mm (1 in) area; 0.05 mm (0.002 in) in any 150 mm (6 in) x 150 mm (6 in) area; 0.1 mm (0.004 in) overall
Combustion chamber volume​
3.8718 in³ (63.447 cm³)
Rocker arm ratio​
1.8:1
Valve arrangement (front to rear) — LH​
I-E-I-E-I-E-I-E
Valve arrangement (front to rear) — RH​
E-I-E-I-E-I-E-I
Valve face runout — intake​
0.002 in (.05 mm)
Valve face runout — exhaust​
0.002 in (.05 mm)
Valve face angle — intake​
45.5–46°
Valve face angle — exhaust​
50.5–51°
Valve guide bore diameter​
0.314–0.315 in (7.975–8.005 mm)
Valve head diameter — intake​
2.160–2.170 in (54.87–55.13 mm)
Valve head diameter — exhaust​
1.664–1.674 in (42.27–42.53 mm)
Valve seat width — intake​
0.067–0.079 in (1.7–2 mm)
Valve seat width — exhaust​
0.051–0.063 in (1.3–1.6 mm)
Valve seat angle — intake​
44.5–45.5°
Valve seat angle — exhaust​
49.5–50.5°




Valve


ItemSpecification
Valve stem diameter — intake​
0.3123–0.3131 in (7.933–7.953 mm)
Valve stem diameter — exhaust​
0.3119–0.3126 in (7.921–7.941 mm)
Valve stem-to-guide clearance — intake​
0.0009–0.0028 in (.022–.072 mm)
Valve stem-to-guide clearance — exhaust​
0.0013–0.0033 in (.034–.084 mm)




Valve Springs — Engine Code: LC3E-6007-KA


ItemSpecification
Valve spring free length — intake​
2.6197 in (66.54 mm)
Valve spring free length — exhaust​
2.7610 in (70.13 mm)
Valve spring installed height​
2.3622 in (60 mm)
Valve spring installed pressure — intake​
63.62–70.37 lb (283–313 N)
Valve spring installed pressure — exhaust​
84.75–93.75 lb (377–417 N)
Valve spring compression pressure — intake​
252.46–276.29 lb (1,123–1,229 N)
Valve spring compression pressure — exhaust​
248.86–272.24 lb (1,107–1,211 N)




Valve Springs — Engine Code: LC3E-6007-JA


ItemSpecification
Valve spring free length — intake​
2.6791 in (68.05 mm)
Valve spring free length — exhaust​
2.8209 in (71.65 mm)
Valve spring installed height​
2.3622 in (60 mm)
Valve spring installed pressure — intake​
78.46–86.55 lb (349–385 N)
Valve spring installed pressure — exhaust​
98.02–107.01 lb (436–476 N)
Valve spring compression pressure — intake​
274.27–299.90 lb (1,220–1,334 N)
Valve spring compression pressure — exhaust​
265.72–289.10 lb (1,182–1,286 N)




Camshaft


ItemSpecification
Camshaft journal bore inside diameter​
2.3617–2.3627 in (59.986–60.013 mm)
Camshaft journal-to- bearing clearance​
0.0010–0.0030 in (.025–.076 mm)
End play​
0.0030–0.0065 in (.075–.165 mm)
Journal diameter​
2.3597–2.3607 in (59.937–59.963 mm)
Lobe lift — intake​
0.2990 in (7.595 mm)
Lobe lift — exhaust​
0.3337 in (8.477 mm)
Runout​
0.0010 in (.025 mm)
Theoretical valve lift @ 0 lash — intake​
0.5433 in (13.8 mm)
Theoretical valve lift @ 0 lash — exhaust​
0.6063 in (15.4 mm)




Cylinder Block


ItemSpecification
Camshaft Bore Diameter — Journal 1 and 5​
2.5428–2.5438 in (64.588–64.613 mm)
Camshaft Bore Diameter — Journal 2 and 4​
2.5231–2.5241 in (64.088–64.113 mm)
Camshaft Bore Diameter — Journal 3​
2.5035–2.5044 in (63.588–63.613 mm)
Cylinder bore diameter​
4.2205–4.2212 in (107.2–107.218 mm)
Cylinder bore maximum taper​
0.0006 in (.016 mm)
Cylinder bore maximum out-of-round​
0.0008 in (.02 mm)
Main bearing bore inside diameter​
2.8504–2.8513 in (72.4–72.424 mm)
Head gasket surface flatness​
0.025 mm (0.0009) in any 25 mm (0.984 in) x 25 mm (0.984 in) area; 0.05 mm (0.002 in) in any 150 mm (6 in) x 150 mm (6 in) area; 0.100 mm (0.004 in) overall




Crankshaft


ItemSpecification
Connecting rod journal diameter​
2.0859–2.0867 in (52.983–53.003 mm)
Connecting rod journal maximum taper​
0.0002 in (.004 mm)
Connecting rod journal maximum out-of-round​
0.0002 in (.006 mm)
Crankshaft end play​
0.0079–0.0157 in (.2–.4 mm)
Main bearing journal diameter​
2.6568–2.6576 in (67.483–67.503 mm)
Main bearing journal maximum out-of-round​
0.0002 in (.006 mm)
Main bearing journal maximum taper​
0.0002 in (.004 mm)
Main bearing journal-to-crankshaft clearance​
0.0015–0.0025 in (.037–.064 mm)





 
Piston


ItemSpecification
Piston diameter (at right angle to pin bore)​
4.2181–4.2187 in (107.141–107.155 mm)
Piston-to–cylinder bore clearance (at grade size)​
0.0018–0.0030 in (.045–.077 mm)
Piston pin bore diameter​
0.9844–0.9846 in (25.005–25.01 mm)




Rings


ItemSpecification
Piston ring end gap — top​
0.0157–0.0197 in (.4–.5 mm)
Piston ring end gap — intermediate​
0.0315–0.0394 in (.8–1 mm)
Piston ring end gap — oil control​
0.0059–0.0177 in (.15–.45 mm)
Piston ring groove width — top​
0.0602–0.0610 in (1.53–1.55 mm)
Piston ring groove width — intermediate​
0.0484–0.0492 in (1.23–1.25 mm)
Piston ring groove width — oil control​
0.0996–0.1004 in (2.53–2.55 mm)
Piston ring width — top​
0.0579–0.0591 in (1.47–1.5 mm)
Piston ring width — intermediate​
0.0461–0.0472 in (1.17–1.2 mm)
Piston ring width — oil control​
0.0984 in (2.5 mm)
Piston ring-to-groove clearance — top​
0.0012–0.0031 in (.03–.08 mm)
Piston ring-to-groove clearance — intermediate​
0.0012–0.0031 in (.03–.08 mm)




Piston Pin


ItemSpecification
Piston pin diameter​
0.9841–0.9843 in (24.997–25 mm)
Piston pin length​
2.3563–2.3681 in (59.85–60.15 mm)
Piston pin-to-piston clearance​
0.0002–0.0005 in (.005–.013 mm)




Connecting Rod


ItemSpecification
Connecting rod bearing-to-crankshaft clearance​
0.0013–0.0034 in (.033–.086 mm)
Connecting rod length (center-to-center)​
6.3189 in (160.5 mm)
Connecting rod maximum allowed bend​
0.0008 in (.02 mm)
Connecting rod-to-pin clearance​
0.0001–0.0007 in (.003–.018 mm)
Connecting rod pin bore diameter​
0.9844–0.9848 in (25.003–25.015 mm)
Connecting rod side clearance​
0.0049–0.0187 in (.125–.475 mm)
 
SVT4x4 great info! Do you buy chance have a parts breakout with part numbers for the engine? I'm going to build a 7.3 for the mustang and have been looking for part numbers so I can confidently order things from the dealer.
 
SVT4x4 great info! Do you buy chance have a parts breakout with part numbers for the engine? I'm going to build a 7.3 for the mustang and have been looking for part numbers so I can confidently order things from the dealer.
That I don't have.
 
Just got through crawling underneath my Tremor 7.3l and now I have a question concerning the oil pan...Is it made of plastic? I also noticed what looks to be a cooler...I dunno but I guess I thought with an off road-y truck you'd likely not want things like that underneath.
 
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