Service manual

Engine Mechanical Specifications (5.0 L) (cont’d)
Application
Specification
Metric English
Piston Compression Ring Groove Clearance – Service Limit – Top
Groove
0.030–0.090 mm 0.0012–0.0035 in
Piston Compression Ring Groove Clearance – Service Limit –
2nd Groove
0.030–0.090 mm 0.0012–0.0040 in
Piston Oil Ring Gap – Production 0.25–0.76 mm 0.010–0.030 in
Piston Oil Ring Gap – Service 0.25–0.89 mm 0.010–0.035 in
Piston Oil Ring Groove Clearance – Production 0.051–0.203 mm 0.002–0.008 in
Piston Oil Ring Groove Clearance – Service 0.051–0.22 mm 0.002–0.009 in
Valve System
Valve Face Angle 45 degrees
Valve Head Edge Margin 0.79 mm – Minimum 0.031 in – Minimum
Valve Lash
Rotate the Valve Rocker Arm Nut Clockwise
360 degrees from Zero Lash
Valve Lifter Hydraulic Roller
Valve Rocker Arm Ratio 1.5:1
Valve Seat Angle 46 degrees
Valve Seat Runout 0.05 mm – Maximum 0.002 in – Maximum
Valve Seat Width – Exhaust 1.65–2.49 mm 0.065–0.098 in
Valve Seat Width – Intake 1.14–1.78 mm 0.045–0.070 in
Valve Spring Free Length 51.3 mm 2.02 in
Valve Spring Installed Height – Exhaust 42.92–43.43 mm 1.67–1.70 in
Valve Spring Installed Height – Intake 42.92–43.43 mm 1.67–1.70 in
Valve Spring Pressure – Closed 338–374 N at 43.2 mm 76–84 lb at 1.70 in
Valve Spring Pressure – Open 832–903 N at 32.3 mm 187–203 lb at 1.27 in
Valve Stem Clearance – Exhaust – Production 0.025–0.069 mm 0.0010–0.0027 in
Valve Stem Clearance – Intake – Production 0.025–0.069 mm 0.0010–0.0027 in
Valve Stem Clearance – Exhaust – Service 0.025–0.094 mm 0.0010–0.0037 in
Valve Stem Clearance – Intake – Service 0.025–0.094 mm 0.0010–0.0037 in
Valve Stem Diameter 8.661–8.679 mm 0.3410–0.3416 in
Valve Stem Oil Seal Installed Height – Measured from the Top of the
Large Diameter Valve Guide Bevel to the Bottom of the Valve Stem
Oil Seal
1–2 mm 0.03937–0.07874 in
SIE-ID = 784231
Engine Mechanical Specifications (5.7 L)
Application
Specification
Metric English
General Data
Engine Type V8
Displacement 5.7 L 350 CID
RPO – VIN Code L31 (R)
Bore 101.63 mm 4.0012 in
Stroke 88.39 mm 3.480 in
Compression Ratio 9.4:1
Firing Order 1–8–4–3–6–5–7–2
Spark Plug Gap 1.52 mm 0.060 in
Oil Pressure – Minimum at Normal Operating Temperature
42 kPa at 1,000 RPM
125 kPa at 2,000 RPM
166 kPa at 4,000 RPM
6 psig at 1,000 RPM
18 psig at 2,000 RPM
24 psig at 4,000 RPM
Engine Engine Mechanical - 5.0L and 5.7L 6-5
2002 - Unit Repair (May 25, 2001)