LA Engine – 273, 318, 340, 360
Torque specifications are for stock factory type bolts with light engine oil applied to the threads and the underside of the bolt head. Other lubrications offer reduced friction and increased bolt tension, and will affect the torque figure. If using aftermarket performance bolts, you should follow the recommended torque specifications of the aftermarket bolts.
* Please Note: Some specifications listed below are in inch-pounds rather than foot-pounds. Over torquing will result in broken bolts.
* Torque values shown are in ft/lbs unless otherwise noted – Follow factory torque sequence.
Fastener | Torque | Thread Size |
Camshaft Lockbolt | 35 | 7/16-14 |
Carburetor to Manifold Nut | 7 | 5/16-24 |
Clutch Housing Bolt | 30 | 3/8-16 |
Connecting Rod Nut – Plain | 45 | 3/8-24 |
Crankshaft Bolt (Vibration Damper) | 135 | 3/4-16 |
Cylinder Head Bolt 273-318 | 85 | 1/2-13 |
Cylinder Head Bolt 340-360 | 95 | 1/2-13 |
Flywheel Cover Bolt | 100 in/lbs | 1/4-20 |
Flywheel Housing to Block Bolt | 50 | |
Flywheel to Crankshaft Bolt | 55 | 7/16-20 |
Fuel Pump to Block | 30 | 3/8-16 |
Intake Manifold Bolt | 35 | 3/8-16 |
Main Bearing Cap Bolt | 85 | 1/2-13 |
Oil Pan Drain Plug | 20 | 1/2-20 |
Oil Pan Bolt | 15 | 5/16-20 |
Oil Pump Cover Bolt | 95 in/lbs | 1/4-20 |
Oil Pump to Block Bolt | 35 | 3/8-16 |
Rocker Shaft Bolt | 30 | 3/8-16 |
Spark Plug | 30 | 14mm |
Timing Cover Bolt (cast) | 30 | 3/8-16 |
Torque Converter to Flexplate Bolt | 270 in/lbs | 5/16-24 |
Vibration Damper Pulley Bolt | 200 in/lbs | 5/16-20 |
Water Pump to Block Bolt | 30 | 3/8-16 |