7.3 Engine Info

[SVT4X4]

Specifications
Materials

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

Engine

Item​	Specification​
Bore	4.2205 in (107.2 mm)
Stroke	3.9764 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 plug	12405

Engine Oil

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

Engine Oil Capacity

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

Torque Specifications

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


Oil Pressure

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

Cylinder Head

Item	Specification
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

Item	Specification
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

Item	Specification
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

Item	Specification
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

Item	Specification
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

Item	Specification
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

Item	Specification
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)

​

 

[SVT4X4]

Piston

Item	Specification
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

Item	Specification
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

Item	Specification
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

Item	Specification
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)

 

[bmexline]

Not all hero's wear capes.

 

[usafrcm90]

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]

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.

 

[JC_Tremor]

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.