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 TABLE 2-2. TORQUE VALUES
Bolt
Comm.
Grade
Low-Carb.
SAE-2
SAE-5
SAE-7
SAE-8
Head
Marking
None
Bolt size
In. lbs
4-40
8
6-32
12
8-32
20
10-24
25
10-32
30
12-24
35
Ft lbs
Ft lbs
Ft lbs
Ft lbs
1/4-20
4
7
9
11
1/4-28
5
9
11
13
6/16-18
9
15
19'
23
5/16-24
10
17
21
26
3/8-16
15
27
35
42
3/8-24
18
33
42
50
7/16-14
25
45
60
70
7/16-20
30
55
70
80
1/2-13
40
75
90
105
1/2-20
45
85
105
120
9/16-12
60
110
135
150
9/16-18
65
120
150
165
5/8-11
80
140
170
200
5/8-18
90
155
200
230
3/4-10
125
240
300
350
3/4-16
140
275
350
400
7/8-9
175
375
500
575
7/8-14
200
400
550
625
1-8
250
575
750
850
1-12
275
650
825
950
Cylinder head screws
100 ft lbs
Cylinder head stud nuts
60 ft lbs
Connecting rod nuts
39 ft lbs
Main bearings - front and intermediate
70 ft lbs
Main bearings - center and rear
60 ft lbs
Piston pin lock screw
35 ft lbs
Flywheel
80 ft lbs
13
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