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Engine Specifications

GENERAL SPECIFICATIONS

Application Specification
Displacement 346 Cu. In. (5.7L)
Bore 3.897-3.898" (99.000-99.018 mm)
Stroke 3.622" (92.00 mm)
Compression Ratio 10.1:1
CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS SPECIFICATIONS

Application In. (mm)
Crankshaft
End Play .0015-.0078 (.040-.200)
Runout At Rear Flange (Maximum) .0020 (.050)
Thrust Wall
Width 1.029-1.0315 (26.14-26.2)
Runout .001 (.025)
Main Bearings
Journal Diameter
Standard 2.558-2.559 (64.993-65.007)
Wear Limit (Minimum) 2.558 (64.993)
Journal Out-Of-Round
Standard .0001 (.003)
Wear Limit .0003 (.008)
Journal Taper
Standard .0004 (.010)
Wear Limit .0008 (.020)
Oil Clearance
Standard .0008-.0021 (.020-.052)
Wear Limit (Maximum) .0025 (.065)
Reluctor Ring Runout (1) .028 (.70)
Connecting Rod Bearings
Journal Diameter
Standard 2.0991-2.0999 (53.318-53.338)
Wear Limit 2.0987 (53.308)
Journal Out-Of-Round
Standard .0002 (.005)
Wear Limit .0004 (.010)
Journal Taper (2)
Standard .0002 (.005)
Wear Limit .00078 (.020)
Oil Clearance
Standard .0009-.0025 (.023-.065)
Wear Limit (Maximum) .003 (.076)
(1) Measured .40" (1 mm) below tooth diameter
(2) Maximum for half of journal length.
CONNECTING RODS SPECIFICATIONS

Application In. (mm)
Bearing Bore Diameter 2.224-2.225 (56.505-56.525)
Maximum Bend (1)
Maximum Twist (1)
Side Play .004-.020 (.11-.51)
(1) Replace rod if any bend or twist exists.
PISTONS, PINS & RINGS SPECIFICATIONS

Application In. (mm)
Piston Diameter
Non Coated Skirt (At Size Point) 3.8964-3.897 (98.969-98.987)
Measured Over Coating (At Size Point) 3.897-3.899 (99.989-99.027)
Piston-To-Bore Clearance
Standard
Non Coated Skirt .0005-.0019 (.018-.054)
Coated Skirt -.001-.0011 (-.027-.029)
Wear Limit .0005-.0029 (.013-.074)
Pins
Pin-To-Bore Clearance
Standard .0004-.00078 (.01-.02)
Wear Limit .0004-.00086 (.01-.022)
Diameter .9447-.9448 (23.997-24.000)
Rod Fit (Interference) .0008-.0017 (.020-.043)
Rings
No. 1
End Gap .009-.017 (.23-.44)
Side Clearance .00157-.0033 (.040-.086)
No. 2
End Gap .017-.027 (.44-.70)
Side Clearance .002-.0034 (.05-.088)
No. 3 (Oil)
End Gap .007-.029 (.18-.75)
Side Clearance -.0003-.0069 (-.008-.176)
CYLINDER BLOCK SPECIFICATIONS

Application In. (mm)
Cylinder Bore
Diameter 3.897-3.898 (99.000-99.018)
Maximum Taper (Thrust Side) .0007 (.018)
Deck Warpage (Maximum) .008 (.22)
VALVES & VALVE SPRINGS SPECIFICATIONS

Application Specification
Valves
Face Angle 45 Degrees
Margin (Minimum) .050" (1.25 mm)
Stem Diameter
Standard .313-.314" (7.96-7.98 mm)
Wear Limit (Minimum) .313" (7.95 mm)
Valve Springs
Free Length 2.08" (52.9 mm)
Installed Height 1.80" (45.8 mm)
Lbs. @ In. (N.m @ mm) 
Valve Spring Pressure
Valve Closed 76 @ 1.80 (340 @ 45.75)
Valve Open 220 @ 1.32 (980 @ 33.55)
CYLINDER HEAD SPECIFICATIONS

Application Specification
Cylinder Deck Height (Minimum) (1) 4.732 (120.2)
Cylinder Head Surface Warpage (Maximum)
Block Surface .004 (.10)
Intake Manifold .008 (.22)
Exhaust Manifold .008 (.22)
Valve Seats
Intake Valve
Seat Angle 46 Degrees
Seat Width .040" (1.02 mm)
Maximum Seat Runout .002" (.05 mm)
Exhaust Valve
Seat Angle 46 Degrees
Seat Width .070" (1.78 mm)
Maximum Seat Runout .002" (.05 mm)
Valve Guides
Stem-To-Guide Oil Clearance
Standard .0010-.0026" (.025-.066 mm)
Wear Limit (Maximum) .0037" (.093 mm)
(1) Measured from the cylinder head deck to the valve rocker arm cover seal surface.
CAMSHAFT SPECIFICATIONS

Application In. (mm)
End Play .001-.012 (.025-.305)
Journal Diameter 2.164-2.166 (54.99-55.04)
Journal Diameter Out-Of-Round (Maximum) .001 (.025)
Journal Runout (Measured At Intermediate Journals) .002 (.05)
Lobe Lift
Intake .274 (6.96)
Exhaust .281 (7.13)
Lobe Wear (Minimum) 1.823 (46.31)
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