CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS
| Application | In. (mm) |
|---|
| Crankshaft |
| Crankshaft Bearing Cap Set Bolt |
| Standard | .295-.299 (7.5-7.6) |
| Wear Limit | .283 (7.2) |
| End Play |
| Standard | .0016-.0094 (.040-.24) |
| Wear Limit | .0118 (.30) |
| Maximum Runout | .0012 (.03) |
| Main Bearings |
| Journal Diameter | (1) |
| Journal Out-Of-Round | .0001 (.003) |
| Journal Taper | .0001 (.003) |
| Oil Clearance |
| Standard Crankshaft Journal |
| Standard | .0007-.0016 (.017-.040) |
| Maximum | .0028 (.07) |
| Connecting Rod Bearings |
| Journal Diameter | 1.8894-1.8898 (47.99-48.00) |
| Journal Out-Of-Round (Maximum) | .0001 (.003) |
| Journal Taper | .0001 (.003) |
| Oil Clearance |
| Standard Crankshaft Journal |
| Standard | .0007-.0016 (.017-.040) |
| Wear Limit | .0028 (.07) |
| (1) Main bearing journal diameter is determined by main bearing journal size mark stamped on crankshaft. |
| (1) | Main bearing journal diameter is determined by main bearing journal size mark stamped on crankshaft. |
CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS
CONNECTING RODS
| Application | In. (mm) |
|---|
| Connecting Rod Bolt Diameter |
| Standard | .283-.287 (7.2-7.3) |
| Wear Limit | .276 (7.0) |
| Bore Diameter |
| Pin Bushing Bore | .8662-.8665 (22.001-22.010) |
| Maximum Bend | .002 Per 3.94 (.05 Per 100.0) |
| Maximum Twist | .0059 Per 3.94 (.150 Per 100.0) |
| Side Play |
| Standard | .0063-.0143 (.160-.362) |
| Wear Limit | .0143 (.362) |
ENGINE PISTONS, ENGINE PISTON PINS & ENGINE PISTON RINGS
| Application | In. (mm) |
|---|
| Pistons |
| Clearance |
| Standard | .0025-.0034 (.063-.086) |
| Wear Limit | .0039 (.10) |
| Diameter | 3.3829-3.3833 (85.927-85.937) |
| Pins |
| Pin Diameter | .8660-.8664 (21.997-22.006) |
| Piston Fit | (1) |
| Rod Fit |
| Standard | .0002-.0004 (.005-.011) |
| Wear Limit | .0020 (.051) |
| Rings |
| No. 1 |
| End Gap |
| Standard | .0118-.0157 (.30-.40) |
| Wear Limit | .0350 (.89) |
| Side Clearance | .0012-.0028 (.030-.070) |
| No. 2 |
| End Gap |
| Standard | .0185-.0244 (.47-.62) |
| Wear Limit | .0531 (1.35) |
| Side Clearance | .0012-.0028 (.030-.070) |
| No. 3 (Oil) |
| End Gap |
| Standard | .0039-.0138 (.10-.35) |
| Wear Limit | .0287 (.73) |
| (1) With piston temperature at 176-194°F (80-90°C), piston pin should slide through piston with thumb pressure. |
| (1) | With piston temperature at 176-194°F (80-90°C), piston pin should slide through piston with thumb pressure. |
ENGINE PISTONS, ENGINE PISTON PINS & ENGINE PISTON RINGS
CYLINDER BLOCK
| Application | In. (mm) |
|---|
| Cylinder Bore |
| Standard Diameter | 3.3858-3.3863 (86.00-86.013) |
| Maximum Deck Warpage | .0031 (.08) |
| Main Bearing Bore I.D. | (1) |
| (1) Main bearing bore I.D. is determined by main bearing bore size mark on cylinder block. |
| (1) | Main bearing bore I.D. is determined by main bearing bore size mark on cylinder block. |
VALVES & VALVE SPRINGS
| Application | Specification |
|---|
| Intake Valves |
| Face Angle | 44.5 degrees |
| Standard Margin | .041-.057 in. (1.05-1.45 mm) |
| Minimum Margin | .020 in. (.51 mm) |
| Standard Overall Length | 4.043 in. (101.71) |
| Minimum Overall Length | 3.985 in. (101.21 mm) |
| Stem Diameter | .2154-.2159 in. (5.470-5.485 mm) |
| Exhaust Valves |
| Face Angle | 44.5 degrees |
| Standard Margin | .047-.063 in. (1.2-1.6 mm) |
| Minimum Margin | .020 in. (.51 mm) |
| Standard Overall Length | 3.9823 in. (101.15) |
| Minimum Overall Length | 3.9649 in. (100.7 mm) |
| Stem Diameter | .2152-.2157 in. (5.465-5.480 mm) |
| Valve Springs |
| Free Length | 1.799 in. (45.7 mm) |
| Maximum Deviation | .063 in. (1.6 mm) |
| Maximum Angle (Reference) | 2 degrees |
CYLINDER HEAD
| Application | Specification |
|---|
| Maximum Warpage |
| Cylinder Block Surface | .0020 in. (.051 mm) |
| Intake & Exhaust Manifold Surface | .0031 in. (.078 mm) |
| Valve Seats |
| Intake Valve |
| Seat Angle | 45 degrees |
| Seat Width | .039-.055 in. (.99-1.40 mm) |
| Exhaust Valve |
| Seat Angle | 45 degrees |
| Seat Width | .039-.055 in. (.99-1.40 mm) |
| Valve Guides |
| Intake Valve |
| Valve Guide I.D. | .2169-.2177 in. (5.51-5.53 mm) |
| Valve Guide Installed Protrusion Height | .3779-.3937 in. (9.6-10 mm) |
| Valve Stem-To-Guide Oil Clearance |
| Standard | .001-.0024 in. (.025-.060 mm) |
| Wear Limit | .0031 in. (.08 mm) |
| Exhaust Valve |
| Valve Guide I.D. | .2169-.2177 in. (5.51-5.53 mm) |
| Valve Guide Installed Protrusion Height | .3779-.3937 in. (9.6-10 mm) |
| Valve Stem-To-Guide Oil Clearance |
| Standard | .0012-.0026 in. (.030-.066 mm) |
| Wear Limit | .0039 in. (.099 mm) |
CAMSHAFT
| Application | In. (mm) |
|---|
| End Play |
| Intake Camshaft |
| Standard | .0016-.0037 (.040-.095) |
| Wear Limit | .0043 (.11) |
| Exhaust Camshaft |
| Standard | .0032-.0053 (.080-.135) |
| Wear Limit | .0059 (.15) |
| Journal Diameter |
| No. 1 Journal | 1.4165-1.4167 (35.971-35.985) |
| Other Journal | .9039-.9045 (22.959-22.975) |
| Journal Runout | .0012 (.03) |
| Lobe Height |
| Intake Camshaft |
| Standard | 1.8305-1.8345 (46.495-46.595) |
| Wear Limit | 1.8262 (46.385) |
| Exhaust Camshaft |
| Standard | 1.8104-1.8143 (45.983-46.083) |
| Wear Limit | 1.8060 (45.873) |
| Oil Clearance |
| Intake No. 1 Journal |
| Standard | .0028-.0015 (.007-.038) |
| Wear Limit | .0028 (.07) |
| Other Intake Journals |
| Standard | .00098-.00244 (.025-.062) |
| Wear Limit | .0039 (.10) |
| Exhaust No. 1 Journal |
| Standard | .0006-.0021 (.015-.054) |
| Wear Limit | .0039 (.10) |
| Other Exhaust Journals |
| Standard | .0006-.0021 (.015-.054) |
| Wear Limit | .0039 (.10) |
VALVE LIFTERS
| Application | In. (mm) |
|---|
| Bore Diameter | 1.2208-1.2215 (31.009-31.025) |
| Lifter Diameter | 1.2191-1.2195 (30.966-30.976) |
| Oil Clearance |
| Standard | .0013-.0023 (.033-.059) |
| Wear Limit | .0028 (.071) |
