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440'S Chrysler, Dodge, Plymouth and Mopar Engine Information.

Mopar Information:HomeChrysler, Dodge And Plymouth EnginesSmall Block

 

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
 

nformation found in this section is believed to be accurate. The 440magnum Mopar Enthusiast Network assumes no responsibility for errors or omissions in anything that is referenced by or linked to this site. This information is provided "as is" and was obtained from Chrysler LLC, DaimlerChrysler Corporation, WWW, Books and other Reference Materials.

 

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