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| Bolt Torque Spec for Chrysler
Mopar guys, this is just for you. We've taken all the guesswork out of Mopar torque specs These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure. If you use aftermarket performance bolts like ARP's, you should follow the recommended torque specifications. Please note that some specifications are in inch-pounds rather than foot-pounds. Read the charts carefully to prevent broken bolts due to excessive torquing. |
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| HEMI 426 |
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| Fastener Type | Torque Spec | |
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| Main cap bolts | 100 ft.-lbs. | |
| Main cap tie bolts | 45 ft.-lbs. | |
| Connecting rod bolts (7/16 in.) | 75 ft.-lbs. | |
| Cylinder head bolts (iron head) | 70-75 ft.-lbs.* | |
| Cylinder head bolts (aluminum head) | 65-70 ft.-lbs.* | |
| Camshaft cap screw (Street Hemi) | 40 ft.-lbs. | |
| Camshaft cap screw(Race Hemi) | 75 ft.-lbs. | |
| Rocker shaft bracket bolts | 30 ft.-lbs. max | |
| Harmonic damper bolt | 135 ft.-lbs. | |
| Flexplate bolts | 70 ft.-lbs. | |
| Torque converter to flexplate bolts | 65 ft.-lbs. | |
| Flywheel cap screws | 70 ft.-lbs. | |
| Clutch cover to flywheel bolts | 30 ft.-lbs. | |
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* follow factory torque sequence
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| BIG CHRYSLER 383, 400, 440 B/RB Engines |
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| Fastener Type | Torque Specs | |
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| Main cap bolts | 85 ft.-lbs. | |
| Connecting rod bolts (plain) | 45 ft.-lbs. | |
| Connecting rod bolts (heavy duty) | 50-55 ft.-lbs. | |
| Crankshaft rear bearing seal retainer bolts | 30 ft.-lbs. | |
| Cylinder head bolts | 70 ft.-lbs.* | |
| Rocker shaft bracket bolts | 25 ft.-lbs. | |
| Intake manifold bolts | 40 ft.-lbs. | |
| Oil pump cover bolt | 10 ft.-lbs. | |
| Oil pump attaching bolt | 35 ft.-lbs. | |
| Oil pan bolts | 15 ft.-lbs. | |
| Cam locking bolt | 35 ft.-lbs. | |
| Harmonic damper bolt | 135 ft.-lbs. | |
| Flywheel/flexplate bolts | 55 ft.-lbs. | |
| Flywheel housing to engine block bolts | 50 ft.-lbs. | |
| Flexplate to torque converter bolts | 270 in.-lbs. | |
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Water pump bolts
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30 ft.-lbs.
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Fuel pump bolt
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30 ft.-lbs.
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Starter mounting bolts
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50 ft.-lbs.
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Exhaust manifold nuts
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30 ft.-lbs.
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* follow factory torque sequence
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SMALL CHRYSLER 273, 318, 340, 360 A Engine |
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| Fastener Type | Torque Spec | |
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Main cap bolts
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85 ft.-lbs.
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Connecting rod bolts (plain)
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45 ft.-lbs.
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Cylinder head bolts, 273-318
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85 ft.-lbs.*
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Cylinder head bolts, 340-360
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95 ft.-lbs.*
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Rocker shaft bracket bolts
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17 ft.-lbs.
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Intake manifold bolts
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35 ft.-lbs.
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Oil pump cover bolt
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95 in.-lbs.
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Oil pump attaching bolt
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35 ft.-lbs.
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Oil pan bolts
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15 ft.-lbs.
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Cam locking bolt
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35 ft.-lbs.
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Cam thrust plate bolts
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210 in.-lbs.
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Harmonic damper bolt
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135 ft.-lbs.
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Flywheel/flexplate bolts
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55 ft.-lbs.
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Flywheel housing to engine block bolts
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50 ft.-lbs.
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Flexplate to torque converter bolts
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270 in.-lbs.
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Clutch housing bolts
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30 ft.-lbs.
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Front cover bolts
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30 ft.-lbs.
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Water pump bolts
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30 ft.-lbs.
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* Follow factory torque sequence
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Have any Questions? Give us a call at: 1-800-230-3030 or 1-330-630-3030 |
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