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Engine Specifications Chevrolet Corvette C5

Mechanical
ApplicationSpecification
Displacement350 Cu. In. (5.7L)
Bore3.898" (99.00 mm)
Stroke3.622" (92.00 mm)
Compression Ratio
LS110.1:1
LS610.5:1

GENERAL SPECIFICATIONS

ApplicationIn. (mm)
Crankshaft
End Play.0015-.0078 (.04-.22)
Runout At Rear Flange (Maximum).0020 (.050)
Main Bearings
Journal Diameter2.558-2.559 (64.993-65.007 )
Journal Out-Of-Round
Standard.0001 (.003)
Wear Limit.0003 (.008)
Journal Taper
Standard.0004 (.010)
Wear Limit.0008 (.020)
Reluctor Ring
Runout (1).010 (.25)
Oil Clearance.0007-.0021 (.018-.054)
Connecting Rod Bearings
Journal Diameter2.0991-2.0999 (53.318-53.338)
Journal Out-Of-Round
Standard.0002 (.005)
Wear Limit.0004 (.010)
Journal Taper (2)
Standard.0002 (.005)
Wear Limit.0004 (.010)
Oil Clearance.0009-.0025 (.023-.065 )
(1) Measured .40" (1 mm) below tooth diameter (2) Maximum for half of journal length.
(1)Measured .40" (1 mm) below tooth diameter
(2)Maximum for half of journal length.

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS SPECIFICATIONS

ApplicationIn. (mm)
Bearing Bore Diameter2.224-2.225 (56.50-56.52)
Maximum Bend(1)
Maximum Twist(1)
Side Play.004-.020 (.11-.51)
(1) Replace rod if any bend or twist exists.
(1)Replace rod if any bend or twist exists.

CONNECTING RODS SPECIFICATIONS

ApplicationIn. (mm)
Piston Clearance
Standard.0007-.0021 (.018-.054)
Wear Limit.0007-.0021 (.018-.054)
Pins
Diameter.9447-.9448 (23.997-24.000)
Rod Fit (Interference).0008-.0017 (.020-.043)
Rings
No. 1
End Gap.009-.015 (.23-.38)
Side Clearance.00157-.00335 (.040-.085)
No. 2
End Gap.0017-.0025 (.044-.064)
Side Clearance.00157-.00315 (.040-.080)
No. 3 (Oil)
End Gap.0070-.0271 (.178-.688)
Side Clearance.0004-.0087 (.010-.220)

PISTONS, PINS & RINGS SPECIFICATIONS

ApplicationIn. (mm)
Cylinder Bore
Diameter3.897-3.898 (99.000-99.018)
Taper (Thrust Side).0007 (.018)

CYLINDER BLOCK SPECIFICATIONS

ApplicationSpecification
Valves
Face Angle45°
Margin (Minimum).050" (1.25 mm)
Stem Diameter.313-.314" (7.955-7.976 mm)
Valve Springs
Free Length
Except LS62.08" (52.90 mm)
LS62.10" (53.40 mm)
Installed Height1.80" (45.75 mm)
Lbs. @ In. (N @ mm)
Valve Spring Pressure
Except LS6
Valve Closed76 @ 1.80 (340 N @ 45.75)
Valve Open220 @ 1.32 (980 N @ 33.55)
LS6
Valve Closed90 @ 1.80 (400 N @ 45.75)
Valve Open259 @ 1.28 (1150N @ 32.42)

VALVES & VALVE SPRINGS SPECIFICATIONS

ApplicationSpecification
Valve Seats
Intake Valve
Seat Angle46°
Seat Width.040" (1.02 mm)
Exhaust Valve
Seat Angle46°
Seat Width.070" (1.78 mm)
Valve Guides
Stem-To-Guide Oil Clearance
Standard.0010-.0026" (.025-.066 mm)
Wear Limit.0037" (.093 mm)

CYLINDER HEAD SPECIFICATIONS

ApplicationIn. (mm)
End Play.001-.012 (.025-.305)
Journal Diameter2.164-2.166 (54.99-55.04)
Lobe Lift
2000
Intake.277 (7.04)
Exhaust.281 (7.13)
2001
LS1
Intake.274 (6.96)
Exhaust.281 (7.13)
LS6
Intake.306 (7.78)
Exhaust.306 (7.78)

CAMSHAFT SPECIFICATIONS

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