Gen. 4, Aluminum Block, LS Engines
The following specs apply to RPO codes:
- LS2
- LS3
- LS4
- LH6
- LC9
- L92
- Etc.
**Click the blue links in the table for more detailed information**
| Fastener Type | Fist Pass | Second Pass | Final Pass | |
| Main Caps | Inner Bolts | 15 ft.-lbs. | - | 80 degrees |
| Outer Studs | 51 degrees | |||
| Side Bolts | - | 18 ft.-lbs. | ||
| Connecting Rod Bolts | 15 ft.-lbs. | - | 85 degrees | |
| Cylinder Head Bolts | M11 x 2.0 x 155.5 | 22 ft.-lbs. | 90 degrees | 70 degrees |
| M8 x 1.25 x 46.0 | - | - | 22 ft.-lbs. | |
| Rocker Arm Bolts | - | - | 22 ft.-lbs. | |
| Intake Manifold Bolts | 44 in.-lbs. | - | 89 in.-lbs. | |
| Oil Pump Bolts | - | - | 18 ft.-lbs. | |
| Camshaft Retainer Plate Bolts | - | - | 18 ft.-lbs. | |
| Camshaft Sprocket Bolts | Single Bolt Cams | 55 ft.-lbs | - | 50 degrees |
| 3-Bolt Cams | - | - | 22 ft.-lbs. | |
| Harmonic Balancer | 111 ft.-lbs. | Loosen 360 degrees | 59 ft.-lbs. | |
| Flywheel / Flexplate Bolts | 15 ft.-lbs. | 37 ft.-lbs. | 74 ft.-lbs. | |
| Transmission Bolts | - | - | 37 ft.-lbs | |
| Exhaust Manifold / Header Bolts | 11 ft.-lbs. | - | 15 ft.-lbs. | |
| Camshaft Sensor Bolt | - | - | 106 in.-lbs. | |
| Crankshaft Position Sensor Bolt | - | - | 18 ft.-lbs. | |
| Front Cover Bolts | - | - | 18 ft.-lbs. | |
| Rear Cover Bolts | - | - | 18 ft.-lbs. | |
| Oil Pan Bolts | Pan to Block | - | - | 18 ft.-lbs. |
| Pan to Front Cover | 18 ft.-lbs. | |||
| Pan to Rear Cover | 106 in.-lbs. | |||
| Water Pump Bolts | 11 ft.-lbs. | - | 22 ft.-lbs. | |
Notes
- Fasteners that list an angle are Torque to Yield (TTY).
- The specs listed are for stock fasteners. If you use ARP fasteners, follow the instructions that came with your new hardware.