Engine Rebuilding Specifications

Cylinder Head Warpage Limit 0.006 in
Valve Guide Inside Diameter (Std.) 0.3433-0.3443 in
Stem To Guide Clearance
Intake 0.0010-0.0027 in
Exhaust 0.0015-0.0032 in
Valve Seat Angle 45°
Valve Seat Width 0.0600-0.0800 in
Valve Seat Runout 0.002 in
Valve Spring Free Length
Intake 2.06 in
Exhaust 1.88 in
Valve Spring Out Of Square Limit 0.078 in
Valve Spring Installed Height
Intake 1.75-1.81 in
Exhaust 1.58-1.64 in
Valve Spring Pressure (lb @ in)
Closed
Intake 74-82 @ 1.7800
Exhaust 76-84 @ 1.6000
Open
Intake 196-212 @ 1.3600
Exhaust 190-210 @ 1.2000
Valve Stem Diameter
Intake 0.3415-0.3423 in
Exhaust 0.3410-0.3418 in
Maximum Valve Tip Refinish 0.01 in
Valve Face Angle 44°
Minimum Valve Margin 1/32 in
Valve Clearance 0.0910-0.1510 in
Camshaft Journal Diameter
Journal 1 2.0805-2.0815 in
Journal 2 2.0655-2.0665 in
Journal 3 2.0505-2.0515 in
Journal 4 2.0355-2.0365 in
Journal 5 2.0205-2.0215 in
Camshaft Bearing Inside Diameter
Journal 1 2.0825-2.0835 in
Journal 2 2.0675-2.0685 in
Journal 3 2.0525-2.0535 in
Journal 4 2.0375-2.0385 in
Journal 5 2.0225-2.0235 in
Camshaft Bearing Clearance 0.0010-0.0030 in
Camshaft Endplay 0.0010-0.0070 in
Camshaft Runout (Max.) 0.005 in
Lifter Bore Diameter 0.8752-0.8767 in
Lifter Diameter Std. .8740-.8745 in
Lifter to Bore Clearance 0.0007-0.0027 in
Main Bearing Journal Diameter 2.2482- 2.2490 in
Connecting Rod Journal Diameter 2.1228- 2.1236 in
Main Journal Maximum Taper 0.0005 in
Rod Journal Maximum Taper 0.0006 in
Journal Runout Limit 0.002 in
Main Bearing Clearance [01]
Rod Bearing Clearance 0.0008-0.0015 in
Thrust Bearing Clearance 0.0040-0.0080 in
Connecting Rod Side Clearance 0.0100-0.0200 in
Connecting Rod Piston Pin Bore Diameter 0.9096-0.9112 in
Piston Ring Maximum End Gap
Top Ring 0.0100-0.0200 in
Second Ring 0.0180-0.0280 in
Oil Ring 0.0100-0.0400 in
Piston Ring Side Clearance
Compression Rings 0.0013-0.0033 in
Oil Ring Snug Fit
Cylinder Bore Diameter (Std.) 4.0004-4.0052 in
Bore Out Of Round Service Limit 0.005 in
Bore Taper Service Limit 0.01 in
Deck Warpage Service Limit 0.006 in
Main Bearing Bore Diameter (Std.) 2.4412-2.4420 in
Oil Pump Rotor Backlash 0.0120 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) 10.6-12.2 @ 1.7400

[01] -- Except No. 1: Preferred, 0.0005-0.0015 in. limit, 0.0005-0.0024 in. No. 1: Preferred, 0.0001-0.0015 in. Limit, 0.0001-0.0020 in.