Dimensions
and
Clearances
All
clearances given at room temperature
of
70°F
(21
C)
All
dimensions in inches (approximate miilimetre dimensions in
parentheses) unless otherwise specified
DESCRIPTION MINIMUM MAXIMUM
CYLINDER
BLOCK
Maximum Allowable
Inches
(mm)
Inches (mm)
Cylinder Bore Honed Diameter
3.5625 (90.49) 3.5635 (90.51)
Out-of-Round
0.003 (0.08)
Main Bearing Inside Diameter (Installed)
2.0015 (50.84) 2.0040 (50.90)
Camshaft Bearing Bore (Bearing Installed)
1.3760 (34.95) 1.3770 (34.98)
Taper 0.003 (0.08)
Main Bearing Inside Diameter (Without bearing) 2.1 87
(55.55)
(2.188 (55.58)
Interference Stud Height from Top Surface of Block
Spec C, D, E
Top2 2.00 (50.80) (2.06 (52.32)
Middle 4 1.84 (46.74) 1.90 (48.26)
Bottom 4 1.16 (29.46) 1.22 (30.99)
Main Bearing Journal Diameter 1.9992 (50.78)
2.0000
(50.80)
Spec A-E
0.0025 (0.064) 0.0038 (0.097)
Begin Spec F
0.0024 (0.061) 0.0042 (0.107)
Connecting Rod Journal Diameter
1.6252 (41.28) 1.6260 (41.30)
Crankshaft End Play
0.005
(0.13)
0.009 (0.23)
and rod bolts properly torqued
1.7505 (44.46) 1.7510 (44.48)
Connecting Rod Side Clearance
0.0020 (0.051) 0.0160 (0.406)
Piston Pin Bushing Bore (Without bearing)
0.8115 (20.61) 0.8125 (20.64)
(Finished bore)
0.7504 (19.06) 0.7508 (19.07)
Aluminum Rod
0.0020 (0.051) 0.0033 (0.084)
Iron Rod
0.0020 (0.051) 0.0033 (0.084)
Bearing Journal Diameter
1.3740 (34.90) 1.3745 (34.91)
Bearing Clearance
0.0015
(0.038) 0.0030 (0.076)
Spec A-E
0.0030 (0.076) 0.0120 (0.305)
Begin Spec F
0.011 (0.28) 0.048 (1.22)
Begin Spec
A
0.286 (7.26) 0.294 (7.47)
Begin Spec E
0.285 (7.24) 0.293 (7.44)
Begin Spec
A
0.291 (7.39) 0.299 (7.59)
CRANKSHAFT
Main Bearing Clearance
CONNECTING
ROD
Large Bore Diameter (Without bearing installed
Piston Pin Bushing Bore with Bearing,
Bearing
to
Crankshaft Clearance
CAMSHAFT
End Play
Camshaft Lift
Intake
Begin SpecF 0.305 (7.75)
Exhaust
Begin Spec E
Begin SpecF 0.295 (7.49)
0.283 (7.19) 0.291 (7.39)
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