These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Other lubes, moly, and aftermarket bolts will have different torque specs.
|
|
|
|
| Small Chevy |
| 7/16 in. outer main cap bolt |
|
65 ft.-lbs. |
| 7/16 in. inner main cap bolt |
|
70 ft.-lbs. |
| 3/8 in. outer main cap bolt |
|
40 ft.-lbs. |
| 11/32 in. connecting rod bolt |
|
38-44 ft.-lbs. |
| 3/8 in. connecting rod bolt |
|
40-45 ft.-lbs. |
| Cylinder head bolts |
|
65 ft.-lbs. |
| Screw-in rocker arm studs |
|
50 ft.-lbs. |
| Intake manifold bolts (cast iron heads) |
|
30 ft.-lbs. |
| Oil pump bolt |
|
60-70 ft.-lbs. |
| Cam sprocket bolts |
|
18-20 ft.-lbs. |
| Harmonic damper bolt |
|
60 ft.-lbs. |
| Flywheel/flexplate bolts |
|
65 ft.-lbs. |
| Pressure plate bolts |
|
35 ft.-lbs. |
| Bellhousing bolts |
|
25 ft.-lbs. |
| Exhaust manifold bolts |
|
25 ft.-lbs. |
|
|
|
|
| Big Chevy |
|
| Main cap bolt, 396-427 2-bolt |
|
95 ft.-lbs. |
| Main cap bolt, 396-454 4-bolt (inner/outer) |
|
110 ft.-lbs. |
| 3/8 in. connecting rod bolt |
|
50 ft.-lbs. |
| 7/16 in. connecting rod bolt |
|
67-73 ft.-lbs. |
| Cylinder head bolts, long |
|
75 ft.-lbs. |
| Cylinder head bolts, short |
|
65-68 ft.-lbs. |
| Screw-in rocker arm studs |
|
50 ft.-lbs. |
| Intake manifold bolts (cast iron head) |
|
25 ft.-lbs. |
| Oil pump bolt |
|
65 ft.-lbs. |
| Cam sprocket bolts |
|
20 ft.-lbs. |
| Harmonic damper bolt |
|
85 ft.-lbs. |
| Flywheel/flexplate bolts |
|
60 ft.-lbs. |
| Pressure plate bolts |
|
35 ft.-lbs. |
| Bellhousing bolts |
|
25 ft.-lbs. |
| Exhaust manifold bolts |
|
20 ft.-lbs.
|
