Mopar Small Block Torque Specifications

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

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