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Engine Specifications Cadillac Catera I

Mechanical
ApplicationSpecification
Displacement181 Cu. In. (3.0L)
Bore3.3858" (86 mm)
Stroke3.3464" (85 mm)
Compression Ratio10.0:1
Fuel SystemSFI

GENERAL ENGINE SPECIFICATIONS

ApplicationIn. (mm)
Crankshaft
End Play.0004-.030 (.010-.79)
Main Journal Diameter (1)
Green (2)2.6763-2.6766 (67.980-67.988)
Brown (2)2.6766-2.6770 (67.988-67.996)
Journal Out-Of-Round.0012 (.003)
Oil Clearance.0006-.00117 (.014-.043)
Connecting Rod
Journal Diameter (2)1.927-1.928 (48.971-48.987)
Journal Out-Of-Round(3)
Journal Taper(3)
Oil Clearance(3)
(1) Color coded to size designation. (2) Available in .0098" (.25 mm) and .0197" (.50 mm) undersize. (3) Information is not available from manufacturer.
(1)Color coded to size designation.
(2)Available in .0098" (.25 mm) and .0197" (.50 mm) undersize.
(3)Information is not available from manufacturer.

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

ApplicationIn. (mm)
Big End Bore Diameter2.0472-2.0477 (52.000-52.012)
Side Clearance.0028-.0110 (.07-.28)
Bearing Clearance.0005-.0024 (.013-.061)
Maximum Bend(1)
Maximum Twist(1)
(1) Information is not available from manufacturer.
(1)Information is not available from manufacturer.

CONNECTING RODS

ApplicationIn. (mm)
Piston Bore Clearance.0010-.0018 (.025-.045)
Select Piston Diameter (1)
83.3834-3.3838 (85.940-85.950)
993.3838-3.3842 (85.950-85.960)
003.3842-3.3846 (85.960-85.970)
013.3846-3.3850 (85.970-85.980)
023.3850-3.3854 (85.980-85.990)
7+0.5 (Oversize)3.4027-3.4031 (86.430-86.440)
Pin Diameter.8268 (21.0)
Piston Pin Clearance.0001-.0003 (.003-.008)
Piston Rings
Compression Rings
Thickness.0590 (1.5)
Side Clearance.0008-.0015 (.02-.04)
End Gap.0118-.0196 (.30-.50)
Oil Ring
Thickness.1181 (3.0)
Side Clearance.0004-.0012 (.01-.03)
End Gap.0157-.0551 (.40-1.40)
(1) Select fit designation stamped on top of piston.
(1)Select fit designation stamped on top of piston.

PISTONS, PINS & RINGS

ApplicationIn. (mm)
Cylinder Bore
Select Bore Diameter (1)
83.3848-3.3852 (85.975-85.985)
993.3852-3.3856 (85.985-85.995)
003.3856-3.3860 (85.995-86.005)
013.3860-3.3864 (86.005-86.015)
023.3864-3.3868 (86.015-86.025)
7+0.5 (Oversize)3.4041-3.4045 (86.465-86.475)
Maximum Out-Of-Round.0026 (.065)
Taper.0003 (.0065)
(1) Select fit designation stamped on top cylinder block.
(1)Select fit designation stamped on top cylinder block.

CYLINDER BLOCK

ApplicationSpecification
Cylinder Head Height (Minimum)5.27" (134 mm)
Maximum Warpage (1).001" (.05 mm)
Valve Seats
Seat Angle45°
Seat Width
Intake.0394-.0551" (1.00-1.40 mm)
Exhaust.0551-.0709" (1.40-1.80 mm)
Valve Guide Diameter
Standard.2362-.2367" (6.000-6.012 mm)
Oversize.2392-.2398" (6.075-6.090 mm)
Valve Length
Standard
Intake4.016" (102 mm)
Exhaust3.622" (92 mm)
Minimum
Intake4.004" (101.7 mm)
Exhaust3.6141" (91.8 mm)
Valve Stem Diameter
Standard
Intake.2344-.2350" (5.955-5.970 mm)
Exhaust.2341-.2346" (5.945-5.960 mm)
Oversize
Intake.2374" (6.030 mm)
Exhaust.2370" (6.020 mm)
Valve Stem Clearance
Intake.0012-.0022" (.030-.057 mm)
Exhaust Valve.0016-.0026" (.040-.067 mm)
Valve Spring Installed Height1.543" (39.2)
Valve Spring Compressed Height1.338" (34mm) @ 56.6 Lbs. (25.7 kg)
(1) Maximum warpage per 3.9" (100 mm) length.
(1)Maximum warpage per 3.9" (100 mm) length.

CYLINDER HEAD, VALVES & VALVE SPRINGS

ApplicationIn. (mm)
Bore Diameter(1)
End Play.0016-.0057 (.04-.144)
Journal Diameter1.099-1.101 (27.939-27.960)
Journal Runout(1)
Bearing Clearance.0015-.0020 (.038-.051)
Lobe Lift.3937 (10.0)
Lobe Height(1)
(1) Information is not available from manufacturer.
(1)Information is not available from manufacturer.

CAMSHAFT

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