Engine Rebuilding Specifications

Cylinder Head Warpage Limit 0.004 in
Valve Guide Inside Diameter
Intake 0.2756-0.2763 in
Exhaust 0.3150-0.3157 in
Valve Stem To Guide Clearance
Intake 0.0008-0.0021 in
Exhaust 0.0016-0.0029 in
Valve Seat Angle 45°
Valve Seat Width
Intake 0.0689 in
Exhaust 0.067 in
Valve Spring Free Length
Inner Spring 1.736 in
Outer Spring 2.016 in
Valve Spring Out Of Square Limit
Inner Spring 0.0750 in
Outer Spring 0.0870 in
Valve Spring Pressure, Closed (lb @ in)
Inner Spring 57.3 @ 0.984
Outer Spring 117.7 @ 1.181
Valve Stem Diameter
Intake 0.2742-0.2748 in
Exhaust 0.3136-0.3138 in
Valve Face Angle 45°
Minimum Valve Margin
Intake 0.0453-0.0571 in
Exhaust 0.0531-0.0650 in
Camshaft Journal Diameter
Journal A 1.8504-1.8514 in
Journal B 1.6732-1.6742 in
Journal C 1.8898-1.8907 in
Camshaft Bearing Inside Diameter
Journal A 1.8472-1.8480 in
Journal B 1.6701-1.6709 in
Journal C 1.8866-1.8874 in
Camshaft Bearing Clearance 0.0059 in
Camshaft Endplay 0.0012-0.0024 in
Camshaft Maximum Runout 0.004 in
Lifter Bore Diameter 0.6299-0.6304 in
Lifter Diameter Std. 0.6278-0.6282 in
Lifter to Bore Clearance 0.0017-0.0026 in
Crankshaft Main Bearing Journal Diameter
Grade 0 2.4790-2.4793 in
Grade 1 2.4787-2.4790 in
Grade 2 2.4784-2.4787 in
Crankshaft Connecting Rod Journal Diameter 1.9667-1.9675 in
Journal Runout Limit 0.0039 in
Main Bearing Clearance 0.0011-0.0022 in
Connecting Rod Bearing Clearance 0.0011-0.0022 in
Piston Pin Diameter Std. 0.8256-0.8261 in
Pin to Piston Bore Clearance 0.0000-0.0002 in
Piston Ring Maximum End Gap
Top Ring 0.0083-0.0173 in
Second Ring 0.0071-0.0173 in
Oil Ring 0.0079-0.0299 in
Piston Ring Side Clearance
Top Ring 0.0016-0.0029 in
Second Ring 0.0012-0.0025 in
Cylinder Bore Out Of Round Service Limit 0.0006 in
Bore Taper Service Limit 0.0006 in
Deck Warpage Service Limit 0.0012-0.0039 in
Oil Pump Rotor To Body Clearance 0.0045-0.0079 in
Oil Pump Rotor End Clearance 0.0071 in
Oil Pump Relief Valve To Body Clearance 0.0016-0.0038 in