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Specifications-5.7L Engine

WARNING: This page is about a different variant/trim than selected.
GENERAL DESCRIPTION

DESCRIPTION  SPECIFICATION 
Engine Type 90° V-8 OHV
Displacement 5.7 Liters
345 (Cubic Inches)
Bore 99.5 mm (3.91 in.)
Stroke 90.9 mm (3.58 in.)
Compression Ratio 9.6:1
Max. Variation Between Cylinders 25%
Firing Order 1-8-4-3-6-5-7-2
Lubrication Pressure Feed - Full Flow
- Filtration
Cooling System Liquid Cooled - Forced
- Circulation
Cylinder Block Cast Iron
Cylinder Head Aluminum
Crankshaft Nodular Iron
Camshaft Hollow Assembled Camshaft
Pistons Aluminum Alloy
Connecting Rods Powdered Metal
CYLINDER BLOCK

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Cylinder Bore Diameter 99.50 mm 3.917 in.
Out of Round (MAX) 0.0076 mm 0003 in.
Taper (MAX) 0.0127 mm 0.0005 in.
Lifter Bore Diameter 21.45 - 21.425 mm 0.8444 - 0.8435 in.
PISTONS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Clearance 0.0215 - 0.0485 mm 0.0008 - 0.0019 in.
Measured at 38.0 mm (1.5 in.) Below Deck
Ring Groove Diameter
Groove #1 89.6 - 89.8 mm 3.527 - 3.535 in.
Groove #2 88.1 - 88.3 mm 3.468 - 3.476 in.
Weight 414.5 grams 14.62 oz.
Piston Length 54.70 - 55.30 2.153 - 2.177 in.
Ring Groove Width 
No. 1 1.51 - 1.54 mm 0.0594 - 0.0606 in
No. 2 1.51 - 1.53 mm 0.0594 - 0.0602 in.
No. 3 3.030 - 3.055 mm 0.1192 - 0.1202 in.
PISTON PINS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Clearance In Piston 0.009 - 0.018 mm 0.00035 - 0.0007 in.
Diameter 24.0 - 24.003 mm 0.9448 - 0.9449 in.
Length 70.53 - 71.03 mm 2.78 - 2.80 in.
PISTON RINGS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Ring Gap 
Top Compression Ring 0.23 - 0.38 mm 0.0090 - 0.0149 in.
Second Compression Ring 0.35 - 0.60 mm 0.0137 - 0.0236 in.
Oil Control (Steel Rails) 0.15 - 0.66 mm 0.0059 - 0.0259 in.
Side Clearance  -
Top Compression Ring .02 -.068 mm 0.0007 - 0.0026 in.
Second Compression Ring 0.02 - 0.058 mm 0.0007 - 0.0022 in.
Oil Ring (Steel Ring) .019 -.229 mm .0007 -.0091 in.
Ring Width 
Top Compression Ring 1.472 - 1.490 mm 0.0579 - 0.0586 in.
Second Compression Ring 1.472 - 1.490 mm 0.0579 - 0.0586 in.
Oil Ring (Steel Rails) 0.447 - 0.473 mm 0.0175 - 0.0186 in.
CONNECTING RODS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Piston Pin Bore Diameter 23.955 - 23.975 mm 0.9431 - 0.9438 in.
Side Clearance 0.10 - 0.35 mm 0.003 - 0.0137 in.
CRANKSHAFT

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Main Bearing Journal Diameter 64.988 - 65.012 mm 2.5585 - 2.5595 in.
Bearing Clearance 0.023 - 0.051 mm 0.0009 - 0.002 in.
Out of Round (MAX) 0.005 mm 0.0002 in.
Taper (MAX) 0.003 mm 0.0001 in.
End Play 0.052 - 0.282 mm 0.002 - 0.011 in.
End Play (MAX) 0.282 mm 0.011 in.
Connecting Rod Journal Diameter 53.992 - 54.008 mm 2.125 - 2.126 in.
Bearing Clearance 0.020 - 0.060 mm 0.0007 - 0.0023 in.
Out of Round (MAX) 0.005 mm 0.0002 in.
Taper (MAX) 0.003 mm 0.0001 in.
CAMSHAFT

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Bearing Journal Diameter - -
No. 1 58.2 mm 2.29 in.
No. 2 57.8 mm 2.27 in.
No. 3 57.4 mm 2.26 in.
No. 4 57.0 mm 2.24 in.
No. 5 43.633 mm 1.72 in.
Bearing To Journal Clearance Standard
No. 1 0.040 - 0.080 mm .0015 -.003 in.
No. 2 0.050 -0.090 mm 0.0019 -.0035 in.
No. 3 0.040 - 0.080 mm .0015 -.003 in.
No. 4 0.050 - 0.090 mm 0.0019 -.0035 in.
No. 5 0.040 - 0.080 mm .0015 -.003 in.
Camshaft End Play .080 - 0.290 mm 0.0031 - 0.0114 in.
VALVE TIMING

DESCRIPTION  SPECIFICATION 
Intake 
Opens (BTDC) 5.0°
Closes (ATDC) 255.0°
Exhaust 
Opens (BTDC) 236°
Closes (ATDC) 32°
Duration 269.3°
Valve Overlap 37°
CYLINDER HEAD

DESCRIPTION  SPECIFICATION 
Valve Seat Angle 44.5° - 45.0°
Valve Seat Runout (MAX) 0.05 mm (0.0019 in.)
Valve Seat Width (Finish)
Intake 1.18 - 1.62 mm
- (0.0464 - 0.0637 in.)
Exhaust 1.48 - 1.92 mm
- (0.0582 - 0.0755 in.)
Guide Bore Diameter (Std.) 7.975 - 8.00 mm
- (0.313 - 0.314 in.)
HYDRAULIC TAPPETS

DESCRIPTION  SPECIFICATION 
Metric  Standard 
Body Diameter 21.387 - 21.405 mm 0.8420 - 0.8427 in.
Clearance (To Bore) 0.020 - 0.063 mm 0.0007 - 0.0024 in.
Dry Lash 3.0 mm (at the valve) 0.1181 in.
VALVES

DESCRIPTION  SPECIFICATION 
Face Angle 45.0° - 45.5°
Head Diameter
Intake 50.67 - 50.93 mm
(1.99 - 2.00 in.)
Exhaust 39.27 - 39.53 mm
(1.54 - 1.55 in.)
Length (Overall)
Intake 123.38 - 123.76 mm
(4.857 - 4.872 in.)
Exhaust 120.475 - 120.855 mm
(4.743 - 4.758 in.)
Stem Diameter
Intake 7.935 - 7.953 mm
(0.312 - 0.313 in.)
Exhaust 7.932 - 7.950 mm
(0.312 - 0.313 in.)
Stem - to - Guide Clearance
Intake 0.022 - 0.065 mm
- (0.0008 - 0.0025 in.)
Exhaust 0.025 - 0.065 mm
- (0.0009 - 0.0025 in.)
Valve Lift ( @ Zero Lash)
Intake 12.0 mm (0.472 in.)
Exhaust 11.70 mm (0.460 in.)
VALVE SPRING

DESCRIPTION  SPECIFICATION 
Spring Force (Valve Closed)
Intake and Exhaust 435.0 N +/- 22.0 N @ 45 mm
(97.8 lbs +/- 5.0 lbs. @ 1.771 in.)
Spring Force (Valve Open) 1077.0 N +/- 48.0 N @ 32.6 mm.
Intake and Exhaust ( 242.0 lbs. +/- 11 lbs. @ 1.283 in. )
Free Length (approx.) 55.6 mm (2.189 in.)
Number of Coils
Intake and Exhaust 7.95
Wire Diameter
Intake and Exhaust 4.95 x 4.1 mm
- (0.194 - 0.161 in.)
Installed Height (Spring Seat to Bottom of Retainer)
Intake and Exhaust 46.0 mm (1.81 in.)
OIL PUMP

DESCRIPTION  SPECIFICATION 
Clearance Over Rotors (MAX) 0.095 mm (0.0038 in.)
Outer Rotor to Pump Body Clearance (MAX) .235 mm (.009 in.)
Tip Clearance Between Rotors (MAX) 0.150 mm (0.006 in.)
OIL PRESSURE

SPECIFICATION  SPECIFICATION 
At Curb Idle Speed (MIN)* 25 kPa (4 psi)
@ 3000 RPM 170 - 758 kPa (25 - 110 psi)
* CAUTION: If pressure is zero at curb idle, DO NOT run engine 
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