Engine Rebuilding Specifications

Cylinder Head Warpage Limit 0.003 in
Valve Guides Inside Diameter 0.3433 in
Valve Stem to Guide Clearance
Intake 0.0018 in
Exhaust 0.0023 in
Valve Seat Angle 44-45°
Valve Seat Width
Intake 0.08 in
Exhaust 0.09 in
Valve Seat Run-Out 0.0018 in
Valve Spring Free Length 1.85 in
Valve Spring Installed Height 1.49 in
Valve Spring Seated Pressure (lb @ in) 76-84 @ 1.50
Valve Spring Comp. Pressure (lb @ in) 178-193 @ 1.09
Valve Stem Diameter
Intake 0.3415-0.3422 in
Exhaust 0.3411-0.3418 in
Valve Face Angle 44.0-45.0°
Valve Clearance (At TDC with lifter collapsed)
Intake 0.071-0.170 in
Exhaust 0.071-0.170 in
Camshaft Bearing Inside 2.0090-2.0100 in
Camshaft Bearing Clearance 0.0010-0.0030 in
Lifter Diameter 0.8740-0.8744 in
Crankshaft Main Bearing Journal Diameter 2.2489-2.2490 in
Connecting Rod Journal Diameter 2.1232-2.1240 in
Maximum Out of Round (All) 0.0004 in
Maximum Taper (All) 0.0003 in
Bearing Clearance
Main Bearings 0.0008-0.0015 in
Connecting Rod Bearings 0.0008-0.0015 in
Crankshaft Endplay 0.0040-0.0080 in
Connecting Rod Pin Bore Diameter 0.9096-0.9112 in
Connecting Rod Side Clearance 0.0035-0.0105 in
Piston Clearance 0.0012-0.0022 in
Piston Pin Diameter 0.9119-0.9124 in
Pin To Piston Clearance 0.0002-0.0005 in
Piston End Ring Minimum Gap
Compression Rings 0.008 in
Oil Ring 0.015 in
Compression Ring Side Clearance 0.0020-0.0040 in
Cylinder Bore Diameter (Std.) 3.6790-3.6830 in
Cylinder Bore Taper Max. 0.01 in
Cylinder Bore Out of Round Max. 0.004 in
Oil Pump Rotor To Body Clearance .0010-.0120 in
Oil Pump Rotor Endplay [01] 0.004 in
Oil Pump Driveshaft To Pump Body Clearance 0.0014-0.0026 in
Oil Pump Relief Valve To Body Clearance 0.0015-0.0029 in
Oil Pump Relief Spring Pressure (lb @ in) 14.2-16.2 @ 1.20