Engine Rebuilding Specifications

Cylinder Head Warpage Limit 0.007 in
Valve Guide Inside Diameter 0.3433-0.3443 in
ValveStem To Guide Clearance 0.0010-0.0027 in
Valve Seat Angle 45°
Valve Seat Width
Intake 0.0600-0.0800 in
Exhaust 0.0700-0.0900 in
Valve Seat Runout 0.002 in
Valve Spring Free Length
Intake 1.96 in
Exhaust 1.78 in
Valve Spring Out Of Square Limit 0.078 in
Valve Spring Installed Height
Intake 1.6100-1.6700 in
Exhaust 1.4400-1.5000 in
Valve Spring Pressure (lb @ in)
Closed
Intake 66-74 @ 1.6400
Exhaust 66-74 @ 1.4700
Open
Intake 166-184 @ 1.2400
Exhaust 166-184 @ 1.0700
Maximum Valve Tip Refinish 0.01 in
Minimum Valve Margin 1/32 in
Valve Clearance 0.1250-0.1750 in
Camshaft Journal Diameter 2.0170-2.0180 in
Camshaft Bearing Inside Diameter 2.0190-2.0200 in
Camshaft Bearing Clearance 0.0010-0.0030 in
Camshaft Endplay 0.0010-0.0070 in
Camshaft Runout (Max.) 0.008 in
Lifter Bore Diameter 0.8752-0.8767 in
Lifter Diameter (Std.) 0.8740-0.8745 in
Lifter to Bore Clearance 0.0007-0.0027 in
Crankshaft Main Bearing Journal Diameter 2.3982-2.3990 in
Connecting Rod Journal Diameter 2.1228- 2.1236 in
Maximum Taper
Main Journals 0.0005 in
Rod Journals 0.0006 in
Runout Limit 0.005 in
Main Bearing Clearance 0.0008-0.0015 in
Rod Bearing Clearance 0.0008-0.0015 in
Thrust Bearing Clearance 0.0040-0.0080 in
Connecting Rod Side Clearance 0.0060-0.0130 in
Piston Pin Bore Diameter 0.9734-0.9742 in
Piston Clearance 0.0010-0.0018 in
Piston Pin Bore Diameter 0.9754-0.9757 in
Piston Pin Diameter (Std.) 0.9749-0.0754 in
Compression Ring End Gap 0.0100-0.0200 in
Piston Ring Side Clearance
Top Ring 0.0019-0.0036 in
Second Ring 0.0020-0.0040 in
Oil Ring Snug Fit
Bore Diameter (Std.) 4.0000-4.0048 in
Out Of Round Service Limit 0.005 in
Taper Service Limit 0.01 in
Deck Warpage Service Limit 0.006 in
Main Bearing Bore Diameter (Std.) 2.5902-2.5910 in
Oil Pump Rotor Backlash 0.012 in
Oil Pump Rotor To Body Clearance 0.0010-0.0130 in
Oil Pump Rotor End Clearance 0.0040 in
Oil Pump Driveshaft To Pump Body Clearance 0.0015-0.0030 in
Oil Pump Relief Valve To Body Clearance 0.0015-0.0030 in
Oil Pump Relief Spring Pressure (lb @ in) 20.6-22.6 @ 2.4900