| SBC Torque Specifications |
|
|
|
| Fastener Type |
Torque Specs |
Lube Type |
|
| rod cap (11/32") |
35 ft-lb |
oil |
|
| rod cap (3/8") |
45 ft-lb |
oil |
|
| main cap (2-bolt) |
70 ft-lb |
assembly lube |
|
| main cap (4-bolt inner) |
75 ft-lb |
assembly lube |
|
| main cap (4-bolt outer) |
65 ft-lb |
assembly lube |
|
| oil pump bolt |
65 ft-lb |
oil |
|
| heads |
60-70 ft-lb |
sealant |
|
| cam sprocket |
20 ft-lb |
thread locker |
|
| rocker arm studs |
50 ft-lb |
sealant |
|
| oil pan |
12 ft-lb |
oil |
|
| timing chain cover |
6 ft-lb |
oil |
|
| valve cover |
3 ft-lb |
oil |
|
| intake manifold |
25-30 ft-lb |
anti-sieze |
|
| exhaust manifold |
20 ft-lb |
anti-sieze |
|
| crank snout |
60 ft-lb |
oil |
|
| spark plugs |
15-25 ft-lb |
dry |
|
| flywheel/flexplate |
60 ft-lb |
thread locker |
|
| pressure plate |
35 ft-lb |
thread locker |
|
|
|
|
|
| BBC Torque Specifications |
|
|
|
| The following specs apply to RPO codes: Gen IV, Big Block Chevy, Mark V, Big Block Chevy |
|
|
|
| Fastener Type |
Torque Specs |
Lube Type |
|
| Main Cap Bolt (396-427, 2-Bolt) |
95 ft.-lbs. |
|
|
| Main Cap Bolt (396-454, 4-Bolt, Inner and 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. |
|
|
|
|
|
|
| Gen. 3, Aluminum Block, LS Engines |
|
|
|
| The following specs apply to RPO codes: LS1,LS6,LM4 |
|
|
|
| Fastener Type |
|
Fist Pass |
Second Pass |
| Main Caps |
Inner Bolts |
15 ft.-lbs. |
- |
|
Outer Studs |
|
|
|
Side Bolts |
- |
|
| Connecting Rod Bolts |
First Design |
15 ft.-lbs. |
- |
|
Second Design |
|
|
| Cylinder Head Bolts |
M11 x 2.0 x 155.5 |
22 ft.-lbs. |
90 degrees |
|
M11 x 2.0 x 101.0 |
|
|
|
M8 x 1.25 x 46.0 |
- |
- |
| Rocker Arm Bolts |
|
- |
- |
| Intake Manifold Bolts |
|
44 in.-lbs. |
- |
| Oil Pump Bolts |
|
- |
- |
| Camshaft Retainer Plate Bolts |
|
- |
- |
| Camshaft Sprocket Bolts |
|
- |
- |
